Q: My car is hard to start until I pat the gas - it idles rough

asked by on

It just started happening it has trouble cranking til u Pat the gas and it has trouble idoling

My car has 193000 miles.
My car has an automatic transmission.

Hello. If you need to continue to apply the accelerator pedal to keep the engine running then it can be caused by a few things. It can be caused by a vacuum leak, a dirty or failing throttle body, or possibly a failing idle control valve. I usually check for vacuum leaks first. The most common spot is the intake manifold gasket on this engine. If none are found then I clean the throttle body to see if that works. If that does not work either then the idle control valve typically needs to be replaced. If you are going to have this idling problem checked, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

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 is hard to start until I pat the gas - it idles rough

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: Idles high without accelerating

Hello. Thanks for writing in about your 2002 GMC Safari. There are several components that may be causing this problem. There could be a bad throttle position sensor, a throttle cable that is sticking, or a vacuum leak. All of...

Q: my drivers side low beam is not working

The connector for the head light bulbs should be checked to see if it has any brown heat damage. If it does, then it will need to be replaced with a new connector from the GM dealer. Make sure you...

Q: What causes the truck not to go?

Hi and thanks for contacting YourMechanic. Check the throttle position sensor (TPS) for voltage and resistance. There should be a 5 volt reference voltage to the sensor with a ground. There should be a resistance on the sensor. If there...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...