i changed the TPS and now my car wont shift out of park without the key release, and is shifting violently in gear
i changed the TPS and now my car wont shift out of park without the key release, and is shifting violently in gear
My car has 133000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Check to see if your brake lights are coming on when you press your brakes. If they do not work then check the brake light fuse and brake switch to see if they are okay. The brake lights need to work to activate the shift lock module and shift solenoid. Re-check to make sure TPS was installed correctly. This may have caused the transmission to shift bad and also would disable the shift interlock if the throttle position sensor is stuck at wide open throttle. Also, scan test the data for TPS for proper operation. If you need help with this, a certified professional from YourMechanic can come to your home or office to inspect your shifting problem and let you know what should be done next.
How to Identify and Fix Common car Problems ?
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Because the TP sensor is an input to the control module for various automatic transmission functions (e.g., shift points and torque converter clutch operation), a problem with the sensor can cause transmission performance issues. For example, you might experience harsh or delayed shifting.
Absolutely, a bad tps sensor will affect the way a transmission shifts since the tps is one of the main inputs to the pcm, ive heard a bad tps could ruin a transmission, but I`ve never seen It happen.
Do you have to reset computer after replacing throttle position sensor? After replacing the throttle position sensor in your engine, if the engine light was on and has a pending code, the code should go away. If the code doesn`t, however, then the ECM (engine computer module) will need resetting.
If you start to experience engine misfires, stalling, or rough idling when the car is stopped, it can also be a warning sign of a failing TPS.
The Transmission Range Sensor tells the PCM the position of the transmission shifter. The PCM uses this information to control which gears of the transmission to enable or disable. When the TR sensor fails it can cause wrong gear starts, no upshifts, or what feels like a falling-out-of-gear condition.
The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.
The GMC Sierra 1500 uses a throttle position sensor (TPS) which commonly fails and causes: Check engine light illumination. Reduced Power message. OBD trouble code P2135.
With the vehicle off, turn the key to the “On” position, but do not start the car. Hold the TPMS reset button until the tire pressure light blinks three times, then release it. Start the car and wait about 20 minutes for the sensor to refresh.
The car`s internal computer only resets after a set period where it checks all of its sensors once more. The reset can happen automatically after around 10 to 20 cycles. A cycle is a phase where you turn on the car and turn it off again. For other vehicles, you`ll have to drive around 50 to 100 miles before it resets.
Oxygen (O2) sensor
An oxygen sensor monitors and analyzes the amount of oxygen in a vehicle`s exhaust system after combustion. A dirty, damaged or malfunctioning O2 sensor (or sensors) affects the air/fuel mixture, causing the engine to idle rough.
Since a faulty throttle position sensor can cause reduced engine power, your car may face some trouble during acceleration. The car may experience uneven acceleration, or it won`t accelerate after a certain point. This issue may ultimately affect the engine life and lead to poor fuel economy.
A malfunctioning TPS will cause your engine to run poorly. Generally the engine will idle fine but will have difficulty accelerating. This is because the computer isn`t telling the engine to inject as much fuel as is required, while at the same time airflow is increasing.
The throttle position sensor governs the throttle body that allows air to flow into the engine. When the TPS goes bad, the throttle body may not open and the engine will not be able to run without air. It may cause erratic idling, stalling, and sudden surges of acceleration.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
i changed the TPS and now my car wont shift out of park without the key release, and is shifting violently in gear
ANSWER : Check to see if your brake lights are coming on when you press your brakes. If they do not work then check the brake light fuse and brake switch to see if they are okay. The brake lights need to work to activate the shift lock module and shift solenoid. Re-check to make sure TPS was installed correctly. This may have caused the transmission to shift bad and also would disable the shift interlock if the throttle position sensor is stuck at wide open throttle. Also, scan test the data for TPS for proper operation. If you need help with this, a certified professional from YourMechanic can come to your home or office to inspect your shifting problem and let you know what should be done next.
Car in park shifter will move through gears but wont shift through the gears its stuck in neutral have emergency brake on so it wont roll
ANSWER : From what you’ve described, it sounds like the shifter cable came off at the transmission or the shifter. I’d suggest checking the shift linkage on the transmission to see if the cable came off. This is due to the connector end bushing falling apart and not being able to hold the cable on any longer. Some cables have to be replaced as a whole and as with others the bushing can be replaced to fix the cable. I’d suggest contacting a certified technician, such as one from YourMechanic, who can come diagnose your shifting issue and make the necessary repairs to your vehicle. Good luck.
my car gear is stuck in drive but the gear shift goes to park car is in acc postion wont crank or swicth to off to remove the key
ANSWER : Hi there, thanks for writing in.
It sounds like you most likely have a broken shift cable, or a failed shifter assembly. A failure of either part would allow you to move the shifter handle to park, while the transmission actually remains in drive. Because it could be either of these parts, I would recommend having a qualified professional, such as one from YourMechanic, diagnose your shift issue.
My car wont shift out of drive but the gear shifter is moving.
ANSWER : Hello. It is likely an issue with your shift linkage which connects your gear shift to the transmission. Some parts of the shift linkage are made of plastic which the components break or pop off making replacement or reassembly required. I suggest you have your vehicle evaluated by technician to check your shift linkage condition. You are able to find a technician and schedule an appointment for your vehicle here.
https://www.yourmechanic.com/services/car-does-not-shift-from-park-to-drive-inspection
https://www.yourmechanic.com/services/car-does-not-shift-from-park-to-drive-inspection
Car begins to roll when the shift lever is in park had only starts in the neutral position, just rebuilt the transmission
ANSWER : The neutral start safety switch could be misaligned or a fault in the linkage and./or cable could be contributing to the problem because "Park" is not actually reached when you move the shifter. The whole mechanism from the manual lever on the transmission up to shifter will have to be inspected. The manual lever should be inspected separately inasmuch as you indicate abnormal resistance in certain gear selections. In addition, it sounds like the shift interlock may not be functioning. The recommended service to obtain a diagnosis of all of these issues is a shift linkage/interlock inspection. If you request that service, the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Gear selector cable/linkage loose, car will not start
ANSWER : Hi there – based on your description, I believe part of the gear selector cable/linkage is no longer anchored or connected. Besides the "free movement" of the shifter as you describe, it is also not registering properly with the neutral safety switch – which prevents engine start. I would recommend having a mobile, professional mechanic, such as one from YourMechanic examine your Saturns shifter mechanism. S/he will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
The car doesn’t shift into first gear while it works fine in reverse
ANSWER : The problem could be that the internal transmission pump is weak, or the transmission clutch seals are leaking. It sounds like the transmission will need an overhaul.
I recommend having a transmission mechanic test the pressures and diagnose the problems to verify whether you need an overhaul with a new torque convertor.
Gear shift is broken off. The car is stuck in park and cannot be moved – 2002 Ford Explorer
ANSWER : Hello. If your vehicle’s shifter was broken, then it will need to be replaced before the vehicle can be driven again. Once the shifter is replaced, I would also recommend taking care of the issue that is requiring you to use the key in order to shift the vehicle. It sounds like your vehicle’s shifter interlock solenoid may be bad, as the vehicle should not have trouble shifting out of park under normal circumstances.
Similar issues can also be caused by wiring problems or an issue with the stoplight switch. I would recommend having a professional technician, such as one from YourMechanic, come to your location to diagnose the cause of the stuck shifter.
