Q: What part do I need to replace to fix a bad idle and not starting issue?

asked by on

The car will start if it is cold, but as soon as you press gas pedal, it revs up like it is supposed to and then cuts off. Then when you try to restart it, you have to pump the throttle.

My car has 81000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. There are several issues that could be causing your symptoms. You may have an issue with your fuel delivery system. Your fuel pump may be weak, or attempting to push fuel through a clogged fuel filter. Both would deplete the amount of fuel available for the engine. Another issue you may be having, which symptoms are a little closer to what you describe, is the idle control valve or solenoid. This part keeps your idle where the computer need it. It regulates the fuel air mix coming in and makes sure without throttle that the engine continues to run. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. What part do I need to replace to fix a bad idle and not starting issue?

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: engine wont start

Hello, thank you for writing in. There are a few basic tests that you can do in order to help narrow down the issue. First turn the vehicle to the "On" position, and listen for the fuel pump to prime....

Q: My car alarm no longer flashes when activated

Hey there, thanks for writing in about your 2004 Subaru Impreza WRX. If you replace the security module, it will most likely fix your the alarm, but you will need to reprogram the keys to get the new alarm to...

Q: I have white smoke coming from my tail pipe I also have to put water in my car about every 3 days what could the problem be

Hi there. Unfortunately, this appears to be a blown head gasket or significant coolant leak inside the motor. White smoke from the tail pipe is caused by coolant that is mixed with engine oil and is burned inside the combustion...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...