Q: My car won't accelerate although I replaced the throttle body and the accelerator pedal.

asked by on

A couple of weeks back I got in my car and turned it on as usual, but after a second it turned of. I tried starting the car again and it wouldn't last on. So I began stepping on the gas while I turned the key and I got it to maintain power, but when I put it in drive, the car would not accelerate. I have now replaced the throttle body and the accelerator pedal and even attempted the relearn procedures but they don't seem to work. First the throttle valve closed position does not click how it's supposed to and then when doing the idle volume procedure, the Engine check light won't blink therefore not allowing the car to learn the procedure. I do no know what else to do, I already tried disconnecting both parts and connecting them again then doing the reprogram but still no success.

My car has 158520 miles.
My car has an automatic transmission.

Hi there. Check the Idle Air Control valve (IAC) and see if it’s sticking or not working. The IAC valve controls the engine’s idle and keeps the engine at an optimal operating speed when the throttle is pushed or not. Usually the engine will race up and down when the valve is not working, but sometimes the engine will loose power and stall out. If you need further assistance with your engine idle not working properly, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My car won't accelerate although I replaced the throttle body and the accelerator pedal.

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: Car air conditioning blows cool but not cold air

Air conditioning is a complex and delicate system. The only way to properly diagnose a system is with a lot of specialized equipment. There are too many variables to guess. A short list for a under-performing system are: a weak...

Q: Car will not pick up until easing off the gas pedal, Infiniti G25

Instead of using a conventional mechanical throttle, your vehicle uses a "drive-by-wire" system. This design, throttle position, and accelerator pedal position are relayed to the control module via dedicated sensors. The control module then uses this information to control a...

Q: When stopped at a light rpm will dip from 600 to 500 can then move back up

Although the idle speed can be adjusted, the idle speed of the engine is optimized by the manufacturer for maximum performance and economy of operation. In practice, therefore, there is no value in making any adjustment. Low and/or unstable idle...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...