Skip the auto shop - Our mechanics make house calls

Q: needs reset new throtle body

asked by on

My car shake when speed over 55 miles, I purchased used throtle body and was placed, but now engine code i sensor pedal accelerator, could be needs to reset the throtle body?

My car has 170000 miles.
My car has an automatic transmission.

A: First off, I need to know which model of Ch...

First off, I need to know which model of Chevrolet it is. Chevrolet makes many different models and designs of vehicles, without that information, I won’t be able to say for sure. Also, if you have a code for the accelerator, that would also help me answer your question. Codes provide a diagnostic path to follow.

I checked the procedure for a few of the most common models and there is a reset procedure that requires a scan tool. It is simply resetting the adaptive air flow parameters to zero for the throttle body. This has nothing to do with the pedal assembly sensors. But since you will have a scanner hooked up to the car, you can do some diagnosis of the system as a whole. It is possible that the used throttle body has a problem with it that the PCM is confused by.

Another thought I had, what brand of throttle body did you install? With electronics it is common that aftermarket parts won’t work properly. Of course factory parts are not cheap and many aftermarket parts work just fine. Knowing which ones do and which ones don’t is a factor of experience. In the case of a mechanic, we try it and if it doesn’t work, we know not to use that particular part for that particular car.

Most likely the code is another problem, but I can’t say for sure without more information. You also stated you have a shake over 55 mph. From your description, this sounds like a bad shock or a tire out of balance. I would need to experience the shake myself. But vibrations that increase with speed are typically an out of balance tire. I’d recommend getting the vehicle looked at by a qualified mechanic who will be able to diagnose the shaking you’re experiencing to pinpoint and fix the issue accurately.

Good luck.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Smells like burning oil

It sounds like you have been doing your best to keep your car running top notch! Sometimes even with our best efforts, problems can arise from certain cars, which are often of no fault of the owner. From the description...

Q: SUV rollback - 2015 Buick Encore Automatic

One alternative for the "hill rollback" problem would be to hold the brake pedal with your left foot, use your right foot to press the accelerator, then release the brake as the vehicle moves forward. The visibility issue is a...

Q: my rpms remain around 2500 rather than dropping down to the normal 500-1000 idle speed

An intake manifold vacuum leak is likely the issue with your VW. Have a close look at all vacuum hoses that connect to the intake manifold. The large hose that connects to the brake booster is a suspect. Listen closely...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.