Throttle Body Stuck Closed Symptoms

The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body. If the ETCS has a malfunction, the ECM shuts down the power for the throttle motor and the magnetic clutch, and the throttle valve is fully closed by the return. However, since the throttle body places the blade so close to the intake manifold, when going to a larger throttle body, you must port the intake in order to allow for clearance of the new, larger blade on the BBK unit. Tighten the clamp with the cable in this position. I was careful not to let any spill into the opening when I removed the hoses off the throttle body. Looking at the car, I can see why. Throttle position sensors are bad which is imbedded into the throttle body (mechanical cable set up). A faulty Thermostat can be diagnosed by 2 very distinct issues. I assume this is the idle air control valve. No light should be visible between the plate and bore with the throttle plate closed. If the idle becomes normal, the EGR solenoid valve is sticking closed. The throttle body in a car provides the control of air and fuel injection so that the system runs efficiently and does not backflow. The code that I have pulled was the P0304, misfire on #4. You need to pull the code and try with a GOOD throttle chamber if you change the throttle chamber you must have a closed throttle position learn, and idle air volume learn done or it won't work correctly. how do i clear it the code p 2112 stated the throttle actuator control system-stuck closed, the check engine icon remains on Pavlin Koev : To clear codes you will need scan tool, you can also disconnect battery for more than 5 minutes. DBW throttle body acting up again. The symptoms of a stuck open EGR valve are stalling, surging, and a rough idle. Hyundai throttle body cleaning may be indicated if you have the following symptoms: No start (due to throttle valve stuck closed or air flow signifcantly restricted) Rough idle or fluctuating engine speed at idle (due to air flow restricted). On the side of some carburetors there is another diaphragm that temporarily closes the slow speed jet air passage when the throttle is closed. Sludge: A faulty PCV valve can allow blowby to mix with the engine oil, resulting in sludge buildup. Remove the choke shaft from the body position. On a 100% factory stock engine, you should never need to adjust the throttle stop screw. The throttle return spring is attached to the throttle cable or it can be attached to the throttle body or carburetor. Electronic throttle body failures cause Ford to fix 1,600,000 cars that limp home. Hold it up to a light. This video shows the symptoms of a bad throttle body on a Chrysler Vehicle. If deceleration is slow enough, the computer may be able to maintain proper air-fuel ratio by using data from the oxygen sensor (s),. Symptoms of a Bad Fuel Pressure Regulator A good fuel pressure indicator always regulates the level of fuel going through it at an optimum level. They felt they could be more confident if they could actually get their hands on the car; and that I understand and agree with -- they were basing almost. Dirty throttle will waste your average fuel consumption. The throttle body is located between the air intake assembly and intake manifold. SFI SYSTEM > PARTS LOCATION. The intake air flows through the air filter, intake boot (snorkel), then through the throttle body, into the plenum, then through the runners and into the cylinders (see diagram). 3) Remove the 2 screws and then the TPS. Assemble the spring and ball into the choke fly out of the casting. Probable casue - Binding throttle body-stuck closed. What to do in a Stuck Throttle Situation: Toyota's Floor Mat and Accelerator Pedal Safety Recalls and How To Stay Safe in Any Vehicle How do you stop a car that suddenly accelerates and seems to. When the car is off, when the car has had 2 hours of highway driving. If the ETCS has a malfunction, the ECM shuts down the power for the throttle motor and the magnetic clutch, and the throttle valve is fully closed by the return. Unsteady idle. This is a component that acts as a gate-keeper and establishes a minimum or maximum position for a throttle body plate to be opened or closed. Category Autos & Vehicles Ford Electronic Throttle Body Failures P2106 P2107 P2110 P2135: What to. I think it has to be due to either heat expansion or carbon buildup that I just don't see or can't get to. stuck ASAP 2004 ford f150 fx4 with 5. P2112 2010 TOYOTA CAMRY Meaning The throttle actuator is operated by the Engine Control Module and it opens and closes the throttle valve using gears. 7 liter V8, and the Electronic Throttle control light turns on if i accelerate, it bothers me a lot because the performance is reduced. The 8th Generation. I then cleaned the throttle body myself and cleaned the the IAC Valve too, with carb cleaner spray. Replaced all parts, cleared all codes and test. In extreme cases, the deposits can become so built up that the throttle body plate will become stuck, striping out. The shift valve determines when to shift from one gear to the next. The engine will overheat rapidly, and the air vents will only blow cold air (where the thermostat has stuck closed). If it idles fast, step on the throttle and slip your toe off the pedal to let it snap up quickly. IDK what it takes to remove it on your truck, but mine only takes about 15 min to get off, just 4 bolts. Breather side should dump into a can which has a hose to the road with a breather filter on it. Follow the instructions should the symptoms below arise. Loosen the jam nut and unscrew the throttle stop screw all the way so that the throttle blade closes fully against the throttle body itself. So when disconnecting a battery on these Fords or resetting keep alive memory, maybe this crosses over to other makes too, if a throttle problem pops up, check the cleanliness of the throttle body first before going to deep into the diag. In this condition, the valve appears to be stuck in the closed position. In cases where the wiring or throttle position sensor are faulty, then the vehicle may run, but suffer from misfires and run poorly. The throttle looks like a carburetor without the fuel bowl, the metering jets or the float. A review of the vehicle history indicates that all though the vehicle has 75,000 miles, on it, the engine has never been serviced except for an occasional oil change. We have a suburban that is having trouble starting, and idleing. At the end of the sleeve on the bottom is the main jet, so it is effectively shut off. P2112 possible causes: Binding throttle body, stuck closed or Damaged PCM. The EGR valve can cause misfires, the valve can cause vacuum leak style problems. id hate a stuck open or missing thermostat to be giving you the runaround. I recently did some work on my throttle body (had it removed, cleaned all the valves, etc. The symptoms include stalling when coming to a stop, or very low idle after starting, or stalling if the throttle is "blipped" (opened and closed quickly). Vacuum leak in throttle body was created by Lownbroke Inside the throttle body is 2 holes the top one is sucking massive air and when plugged the car dies but the bottom one does nothing anyone ever had this problem?. But these symptoms may come from other bad sensors, parts, or components. 5 So should I go ahead and try to clean the throttle body and hopefully it don't turn out what others are having problems with such as, butterfly getting stuck because it lost it's lubrication, idle going higher than better, etc. P2112- Throttle actuator control system stuck closed. Explanation - ECM has detected the throttle plate is at a lower angle than commanded. Symptoms of a Bad or Failing Throttle Position Sensor Common signs include lacking power when accelerating, rough or slow idle, stalling, inability to shift up, and the Check Engine Light coming on. Air/Fuel Solenoid Purpose: Located in the carburetor, controls air/fuel mixture based on ECU control output. On a 100% factory stock engine, you should never need to adjust the throttle stop screw. if the CEL illuminated for a stuck open/stuck closed throttle plate and if it continues to reset the unit is most likely DOA. My Crown vic won't start unless the throttle plug unhooked. If you have an idle problem with the unmodified NA 1. On vehicles that use Cable-Throttle systems, an over adjusted (or sticky) throttle cable can cause the TBA to fail, or symptoms like no CCS (Cruise Control System) operation. So when disconnecting a battery on these Fords or resetting keep alive memory, maybe this crosses over to other makes too, if a throttle problem pops up, check the cleanliness of the throttle body first before going to deep into the diag. NOTE: The PCM knows that any. Refrains from controlling the throttle opening angle feedback if the throttle position sensor (1st channel) is also defective. Reading that 8-hour job, I see how the removal steps work their way to the throttle body, so I can follow the arrows to the throttle body itself; but he has no pictures of the throttle body in situ. When the PCM sees a voltage that is outside of normal operating range, P0120 BMW will set. A typical ETC system consists of three major components: (i) an accelerator pedal module (ideally with two or more independent sensors), (ii) a throttle valve that can be opened and closed by an electric motor (sometimes referred to as an electric or electronic throttle body (ETB)), and (iii) a powertrain or engine control module (PCM or ECM). This is an interesting and timely thread. Just a few days later, my truck started acting up again and I pulled the same code. P2112 Description The throttle actuator is operated by the Engine Control Module and it opens and closes the throttle valve using gears. and I have no idea what that little thing is that's floating in the puddle. I sprayed carb cleaner and some break cleaner into the throttle body to wash out the sanding residue. With the stock EGR system in place, the stock Cummins throttle valve will open and close to adjust the ratio of fresh intake air to re-circulated exhaust gasses. Often similar to the throttle body, the exhaust back pressure control valve uses an electronically controlled plate to keep exhaust flow as determined by the PCM. Notice: Do not mount the throttle body in a vise. During production, the TAS is accurately set by measuring the airflow rate past a closed throttle plate. I took it to an auto part store and the diagnostic indicated trouble code P2112 "throttle body stuck closed". Turn the ignition ON, test for 0 volts between each motor control circuit terminal E and F and ground. a stuck-closed EGR valve Tech A says that there could be a hole or tear in the duct between the mass air flow sensor and the throttle body. Then use throttle body cleaner and clean the hell out of it like malibutommy said. Throttle Body Trouble Codes. P0121, P0122, P1121, P1122. Dirty throttle will waste your average fuel consumption. com Forums Rotate image Save Cancel. The symptoms of a stuck open EGR valve are stalling, surging, and a rough idle. The most common symptom of the dirty throttle body is rough idling. IDK what it takes to remove it on your truck, but mine only takes about 15 min to get off, just 4 bolts. If the egr valve was stuck closed you may. The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body. (This would be the slide hitting the bottom of the carburetor on a two stroke, or the throttle linkage hitting the stops on a four stroke whether fuel injected or carbureted). Reading that 8-hour job, I see how the removal steps work their way to the throttle body, so I can follow the arrows to the throttle body itself; but he has no pictures of the throttle body in situ. Knowing the symptoms of a defective throttle position sensor can help you quickly diagnose the problem and make needed corrections. When the engine is shut off, crankcase vapors enter through the PCV system and work their way into the intake system towards the air box. There are 2 designs for the TAC, parallel and inline. In extreme cases, the deposits can become so built up that the throttle body plate will become stuck, striping out. While the engine is idling roughly, disconnect the green striped vacuum hose from the top of the throttle body. A faulty EGR valve or related component may leave the valve in either the stuck open or stuck closed position. The result of this is that it is very difficult to drive around parking lots. Learn what does P2112 2006 Ford Fusion Throttle Actuator Control System - Stuck Closed means, location and how to repair? The electronic Throttle Actuator Control (TAC) is a DC motor controlled by the Powertrain Control Module (PCM). On a 100% factory stock engine, you should never need to adjust the throttle stop screw. Decel RPM Decay = When the throttle is closed, and the engine is returning to idle speeds, the Idle Closed loop will use Target RPM to control the speed during that period. Most often this will occur under hard braking, since the computer assumes normal operation and continues to deliver cruise-amounts of fuel when the throttle butterfly is shut. With the #1 intake valves open and the DISA closed, there is a straight path to the cylinder. Hard starting. This will result in not enough air entering your engine. Originally Posted by Elliott Larron View Post E. I have ensured all of the turbo tubes are tight and without holes or leaks as best I can without the car running, including the turbo tubing that had come off the throttle body. After then i changed the throttle body,the pedal and the PCM but the TB is a used one. This type of fuel injection system consists of only two major castings - the fuel body and the throttle body. Vacuum leak in throttle body was created by Lownbroke Inside the throttle body is 2 holes the top one is sucking massive air and when plugged the car dies but the bottom one does nothing anyone ever had this problem?. The EGR valve can cause misfires, the valve can cause vacuum leak style problems. A typical ETC system consists of three major components: (i) an accelerator pedal module (ideally with two or more independent sensors), (ii) a throttle valve that can be opened and closed by an electric motor (sometimes referred to as an electric or electronic throttle body (ETB)), and (iii) a powertrain or engine control module (PCM or ECM). A throttle body temperature sensor may wear out over time and should be replaced by a professional mechanic if necessary. Make certain that the shutter fits If the body bearing areas are worn, replace the body accurately into the throttle bore in the closed casting. I turned it off after this and restarted, still idling correctly at 750 rpm. Symptoms of a dirty throttle body are these: 1. Cleaning might help for the "stuck closed" issue but not with a hard code set. They felt they could be more confident if they could actually get their hands on the car; and that I understand and agree with -- they were basing almost. How to Check a Throttle Position Sensor. Now what to do. Learn what does P2112 2012 Ford Fusion Throttle Actuator Control System - Stuck Closed means, location and how to repair? The electronic Throttle Actuator Control (TAC) is a DC motor controlled by the Powertrain Control Module (PCM). I decided to make a video on how to do this so that way it would be easier for people to do it themselves in the future. It will change drastically as the engine is running at different RPM and load conditions. The intake air flows through the air filter, intake boot (snorkel), then through the throttle body, into the plenum, then through the runners and into the cylinders (see diagram). If you have an idle problem with the unmodified NA 1. Car displayed loss of power. Injector flows that may have been adjusted for low flows in "closed loop", will STILL remain underfloweven with the WOT fuel addition. In our complaints, the problem was diagnosed as a failed throttle body, with trouble codes P2111 and P2112 present in the on-board computer system, indicating the electronic throttle actuator control system was stuck open and closed, respectively. Symptoms of a Bad or Failing Throttle Controller to a cable that ran from the pedal to the engine and was connected to a mechanical linkage mounted to a carburetor or throttle body. I'm guessing it has to do with low airflow across the maf + the throttle body. At WOT (Wide Open Throttle) the TPS signal voltage will approach a full 5 volts. Looking at the car, I can see why. If the egr valve was stuck closed you may. Procedure for throttle body cleaning (done Hundreds of Toyotas this way including my own). These are my symptoms, as soon as I turn the AC on, the car will surge irradically at idle and even sometimes stall out. Procedure for throttle body cleaning (done Hundreds of Toyotas this way including my own). DBW throttle body acting up again. i'm having some issues that i can't quite figure out. On the AODE, and 4R70W a harsh shift into second gear is usually caused by a broken lower 1-2 accumulator spring. The throttle body controls the air flow into the engine and the fuel injectors supply the proper amount of fuel to each piston depending upon operating conditions. The ECM made an adjustment due to the carbon build up on the throttle body. P2112 possible causes: Binding throttle body, stuck closed or Damaged PCM. I recently did some work on my throttle body (had it removed, cleaned all the valves, etc. Then you can see if it's sitting slightly open or if it is indeed closed. When we accelerate, the butterfly opens a little or a lot to allow air into the intake manifold, depending on how much you are accelerating. 6 million model year 2009-2012 Ford Escape, 2010-2013 Ford Fusion, 2009-2011 Mercury Mariner and 2010-2011 Mercury Milan vehicles. When this kind of knocking is present over a period of time, you can check you EGR by warming up you engine and rev it. These are the most common symptoms of a dirty electronic throttle body: Sticky gas pedal sensation felt as a hesitation when you accelerate the engine. Honda Accord Main Forums. Plug the line going from the solenoid to the throttle body, and see if your problem goes away. A TBA needs to be performed whenever one of the following occur: • Loss of Voltage to the vehicle (battery disconnected or battery run down to low voltage) • ECU has been disconnected / reconnected or replaced • Throttle body has been cleaned, removed or re-installed. When the throttle is almost closed, the signal is low and it rises as the throttle opens wider. It is not adjustable. The ETC shares a reference voltage wire with the A/C. Engines with throttle body injection are somewhat faster (2 to 3 times per second at 2500 rpm), while engines with multiport injection are the fastest (5 to 7 times per second at 2500 rpm). Idle Trim Jump Neg = Fuel trim works in a saw-tooth pattern – for example if the engine is lean, there is a slow increase until rich, followed by a sudden jump lean. all that remains of a wombat that got sucked through your intake and stuck on your throttle plate. The high apeture should have another breather filter on it. At startup you would notice hesitation, surging/miss at part throttle, rough idle and engine vibration, and poor engine acceleration once driving. An IAC is an electrically operated valve that allows air to sneak around the closed throttle, and is found next to the throttle valve on the engine. Decel RPM Decay = When the throttle is closed, and the engine is returning to idle speeds, the Idle Closed loop will use Target RPM to control the speed during that period. Cummins Electronic Throttle Control Problem Any of you Cummins guys have any experience with a failure of the electronic throttle control? On my 2008, it started with really crappy idling and wildly erratic running at low rpms, followed by a dashboard indicator which was a red lightening bolt. The intake air flows through the air filter, intake boot (snorkel), then through the throttle body, into the plenum, then through the runners and into the cylinders (see diagram). I just post a question about my car idling problems come to find out my throttle body is stuck in the open position. While the engine is idling roughly, disconnect the green striped vacuum hose from the top of the throttle body. Spray a little cleaner into your intake manifold before you screw in your throttle body. The PCM pulses current to the IAC coils in small steps (counts) to extend the pintle into a passage in the throttle body to decrease air flow. Until the mid-2000s, the majority of throttle bodies were mechanically controlled. A PCV valve that is clogged or stuck in the closed position will allow crankcase pressure to build. If deceleration is slow enough, the computer may be able to maintain proper air-fuel ratio by using data from the oxygen sensor (s),. Causes of low compression, no start from a stuck closed IAC (part 2) - Toyota/Lexus Print In this part 2 video we will focus on testing and cleaning the idle air control motor. Engine Stalling. Replaced all parts, cleared all codes and test. Like many improvements, change presents new service opportunities. • This procedure uses the closed throttle position switch (CTPS) status (ON or OFF) instead of the throttle position sensor (variable output voltage) to adjust the TPS. P2112 - Throttle Actuator Control (TAC) System - Stuck Closed. There are 2 designs for the TAC, parallel and inline. The throttle motor opens and closes the throttle plate, allowing more or less air to flow through the engine based on the driver's request for power. OK, in a nutshell. This put a vacuum on the fuel tank, warping it, which was messing with the float level throwing off the fuel gauge, and creating a rich fuel condition (more fuel than air in the fuel mixture), which fouled out the spark plugs. But then last week while driving home on my normal route at normal speeds. Throttle Actuator Control (TAC) System Description. MSRP on the throttle body assembly is $972 plus $4 for the gasket. EGR valve stuck open** :** A stuck open EGR valve allows exhaust gases to enter the engine at the wrong time. Always check manufacturer's specifications for any details. That is, toxic vapors that were created by exhaust gasses leaking past the rings (called "blow-by") and into the crankcase were simply allowed to flow out of the engine. This keeps HP up, and engine temperatures down. The TPS connects to the throttle plate on the throttle body. This put a vacuum on the fuel tank, warping it, which was messing with the float level throwing off the fuel gauge, and creating a rich fuel condition (more fuel than air in the fuel mixture), which fouled out the spark plugs. #1 - Harsh or Delayed "Garage Shifts" One of the most common signs you have a problem with your transmission valve body is a delay (2 or more seconds) or harsh shift when shifting from Park to Drive or Park to Reverse. If the IAC is dirty it can cause it to stick and not let the correct amount of air through at idle [remember, the throttle plate is closed so that's how the air gets through]. A TBA needs to be performed whenever one of the following occur: • Loss of Voltage to the vehicle (battery disconnected or battery run down to low voltage) • ECU has been disconnected / reconnected or replaced • Throttle body has been cleaned, removed or re-installed. The intake air flows through the air filter, intake boot (snorkel), then through the throttle body, into the plenum, then through the runners and into the cylinders (see diagram). Follow the instructions should the symptoms below arise. In our complaints, the problem was diagnosed as a failed throttle body, with trouble codes P2111 and P2112 present in the on-board computer system, indicating the electronic throttle actuator control system was stuck open and closed, respectively. P2006 stuck closed The DTC is set when the IMRC is commanded open, but the IMRC monitor indicates closed IMRC monitor circuit open IMRC conrtol circuit open IMRC Monitorcircuit shorted to VREF Damaged IMRC actuator or solenoid. It can get stuck closed (motor just stops working), but as I've stated, there are other areas where air does get in. The ECM made an adjustment due to the carbon build up on the throttle body. As the engine in your pickup or van idles (and the throttle plate is closed), the throttle position sensor sends the ECM a voltage signal of about 0. ) and after I put it back together I noticed something strange. So anything sticking or acting up with the throttle, will cause idle issues. 7L engines with throttle body fuel injection system: a stuck open EGR valve. I usually go to this site to get info on such problems since i have an 03 Niss Alt. (up to a couple of weeks depending on your driving habits) Reply in2pro. 1999s70 (George) over on Swedespeed posted the following which I hope you will find highly informative and helpful: As one who is on his 5th Electronic Throttle Module (ETM) and 4th Mass Air Flow Sensor (MAF), I'd like to write of my experience with these, in particular noting the symptoms of their impending failure (so that you don't suddenly find yourself with a stalling car as an 18. In some V6 and V8 engines, an intake manifold can be made of several separate sections or parts. Symptoms of defective Mercedes throttle body or throttle position sensor include: Rough idle. 9 to 1 Volts. Plate stuck closed – Alternatively, the plate can become stuck shut. I have an industrial 8n engine I'm working on now had 3 stuck. If you have a broken manifold air lever you may want to consider replacing your old lever with a high strength aluminum design. P2112 Throttle Actuator Control (TAC) System Stuck Closed. The check valve closes to slow the air escaping the bellows and thus slow the closing of the throttle. Verify that the Throttle Return Screw (TRC) is in contact with the throttle linkage lever arm when the throttle is in the closed plate (idle) position. How a throttle position sensor works. This extra turn keeps the throttle blade from sticking against the inner bore of the throttle body. The fuel economy of the car drops drastically. P2104 is just an informative code, set because of P2112. Symptoms of a Faulty Throttle Position Sensor. how is your temp gauge. The IAC valve, mounted in the throttle body, controls a portion of the bypass air. Low Mileage and Acceleration. I have recently experienced some misfires, rough idle, etc. While I was driving, it jerked hard but did not shut off, and I couldn't accelerate. Got diagnostic codes and had P2104(Throttle Actuator Control System-Forced Idle) and P2112(Throttle Actuator Control System-Stuck closed). It controls the engine's ability to maintain an idle, prevents stalling, and aids in. Every once in a while, after the car has been stopped for a minute (so when leaving the garage or after waiting at a red light, etc. The symptoms of a stuck open EGR valve are stalling, surging, and a rough idle. What the P2112 code means. Align the TPS pickup lever with the tang on the throttle actuator lever (TPS drive lever on the throttle shaft). I have a 2005 Ford f150 and my truck cut off yesterday. In some V6 and V8 engines, an intake manifold can be made of several separate sections or parts. SFI SYSTEM > PARTS LOCATION. If I remember correctly it is ground controlled by the PCM. On the later models, also remove the four bolts that secure the throttle body to the mounting plate and remove and replace the smaller throttle body gasket. I recently did some work on my throttle body (had it removed, cleaned all the valves, etc. With the stock EGR system in place, the stock Cummins throttle valve will open and close to adjust the ratio of fresh intake air to re-circulated exhaust gasses. Back in the day, a car's throttle was attached to its accelerator pedal via a steel Bowden Cable. If you have a broken manifold air lever you may want to consider replacing your old lever with a high strength aluminum design. Difficulty while changing gears. com/jbrj/man. The symptoms of a dirty throttle body include rough idle, poor gas mileage, faulty CEL codes, stalling and poor acceleration. I took it to an auto part store and the diagnostic indicated trouble code P2112 "throttle body stuck closed". (up to a couple of weeks depending on your driving habits) Reply in2pro. This type of fuel injection system consists of only two major castings - the fuel body and the throttle body. Home Air, Fuel, Emission & Exhaust Fuel Injection System Throttle Body Parts Throttle Body Parts Your throttle position sensor (TPS) constantly reports the position of your throttle plate (or butterfly valve) to the engine control unit (ECU), helping to control transmission shift points and fuel metering. Next, it helps your car accelerate smoothly whether from a standstill or when you’re moving at a constant speed. I pulled the plugs and they are covered in black soot, only 50kms old. when you crank and start your Ford vehicle: The throttle position sensor gets 5 Volts and Ground from the ECM. clean throttle body, especially around throttle plate. Also, my throttle body is stuck open at 10. Idle at 2000 RPM. This gadget is necessary for cold fast idle and maintenance of the specified idle speed during a variety of accessory load conditions. Search Search. The Enging Managment light has came on yesterday around 5pm, a mate plugged in a fault code reader and its came back with p2006 throttle body flap 1. There are several symptoms of a bad throttle on a car. Another clear sign of a bad throttle position sensor is random stalling, occurring regardless of whether your vehicle is idling or being driven. (ETC follower test)Also a throttle relearn can be done to put the gas pedal sensor and throttle motor (ETC) in sync. When the spring is damaged, the throttle body will remain open until either the pedal is manually drawn back by a driver's foot or gravity takes over and helps to close the throttle. The throttle body fuel injection system, or TBI as referred to by GM or CFI by Ford, works using a single or pair of injectors. At low RPM, the valve stays closed. ) and after I put it back together I noticed something strange. Decel RPM Decay = When the throttle is closed, and the engine is returning to idle speeds, the Idle Closed loop will use Target RPM to control the speed during that period. Also known as back pressure, the Exhaust Pressure regulators are used in turbocharged diesel and gasoline engines. If you cleaned the throttle body with the key off and manually opened it, it should be ok. Same issue I had numerous times in past w/ the original OEM TB, however this is a 9 month old, minty looking VDO that came out of a branded box. The 2005 Ford Five Hundred has 22 problems reported for throttle body malfunction. This may cause the "Check Engine" warning light to come on. These are my symptoms, as soon as I turn the AC on, the car will surge irradically at idle and even sometimes stall out. (Page 1 of 2). Unfortunately, what's been happening is the throttle motor gets to a position and cant hold itself there. A vehicle's throttle determines how fast or slow it travels, how it accelerates after turning a corner and how fast it takes off when the gas pedal is pressed. This P2112 code means that the throttle body actuator motor is stuck closed when the command for open throttle or accelerator opening was provided by the engine control computer. Mobile Devices: Lite Theme Citroën: Citroën Trader | Saxo Trader | C2 Trader Peugeot: Peugeot Trader | 106 Trader. Bad throttle position sensor symptoms. The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve using gears. The fuel body. Same issue I had numerous times in past w/ the original OEM TB, however this is a 9 month old, minty looking VDO that came out of a branded box. No codes are set at idle but when revved up, the P1500 code appears and goes into limp mode. Check the throttle position sensor. The choke is like the throttle, except it is on the top rather than the bottom of the carb, and it closes when cold and opens when warm. 2004 F150 Throttle Body Cleaning Specs and Price 2004 ford f150 fx4: 5. ) and after I put it back together I noticed something strange. The code that I have pulled was the P0304, misfire on #4. Symptoms of a Defective Throttle Position Sensor Following is a list of symptoms, either of or a combination of which, a car driver may experience because of a defective throttle position sensor: Bucking and jerking of the car. We cleaned the MAF sensor, removed and cleaned the throttle. A PCV valve that is clogged or stuck in the closed position will allow crankcase pressure to build. The National Highway Traffic Safety Administration (NHTSA) has closed its investigation into allegedly defective throttle bodies in an estimated 1. NOTE: The PCM knows that any. If you have a compression problem in a cylinder in an OHV or OHC engine, a leakdown test is a reasonably straightforward way to figure out the fault in that cylinder. The throttle cable is binding and causing the throttle plate to not fully close. On my new KDX 1998 bike, (refer post # 10 as well) The last ride I noticed the throttle got stuck open a few times, the last time disaster, got thrown off when going over a steep bank, couldn't have happened at worse place, gave me a hell of a fright, I didnt have time to pull in the clutch or hit the kill switch,all happened unexpectantly fast. Though this can result from a number of causes, one of them can be an improper air/fuel mixture incited by a broken temperature sensor. THROTTLE BODY CLEANING 2000 DODGE DURANGO WITH 4. The sensor is generally located near the throttle body and can be easily spotted on either its right or left hand side, under the car hood. Average repair cost is $720 at 97,750 miles. P2112 is a general ODB2 diagnostic trouble code indicating a fault with the throttle actuator control system. When they fail, they fail open, and basically become a vacuum leak. The hole in the plate should be visible and unobstructed. The Idle Air valve on your particular Nissan is frequency controlled. The intake is actually two separate loops folded over itself, which is why the throttle body is positioned at the bottom. At the end of the sleeve on the bottom is the main jet, so it is effectively shut off. I'm also getting a little surging under light throttle, really poor mileage and not much engine braking when I release the throttle. Everything was working fine for a month, until two days ago I got a check engine light code p0505. Reassemble the air cleaner. HBFD819 The only codes that you'll get out of the car is Throttle stuck open, thottle stuck closed and. A quick check for this is to simply try holding the throttle closed at the linkage on the throttle body. The throttle position sensor which is mounted on the throttle body detects the opening angle of the throttle valve, and it provides feedback to the ECM to control the throttle motor. Learn what does P2112 2012 Ford Fusion Throttle Actuator Control System - Stuck Closed means, location and how to repair? The electronic Throttle Actuator Control (TAC) is a DC motor controlled by the Powertrain Control Module (PCM). This test result generally tells you that the TP sensor is defective. Because I've never replaced the valve on this vehicle before (possibly never been replaced), it took me about two hours, figuring out how. values for setupin signal output voltage or resistance usually found in haynes or autodata etc. P2112 Meaning The throttle actuator is operated by the Engine Control Module and it opens and closes the throttle valve using gears. 4L engine is shown as an example. Throttle position sensors (TPS) are usually located on the large butterfly valve that controls airflow into and out of an engine, called the throttle-body. then go from there. Idle air control valves open to allow more air to "leak" into the intake, raising the engine rpms, or close when not needed. Throttle Body Faliure. So, my theory is that the throttle plate (or butterfly valve?) in my throttle body is sticking, especially when the engine is hot and especially on hot days (it was 80 degrees out today). Some of you will know that I have had throttle position sensor problems with my 2003 E39 530i in the past.