Skip the auto shop - Our mechanics make house calls

Q: Does not idle when cold

asked by on

since the mornings have gotten colder(30 degrees) engine rpm's are low untill engine warms. have to keep prm up with excelarator .after engine warms rpm picks up to normal, 800. everything seems to work ok when weather is warm

My car has 200000 miles.
My car has an automatic transmission.

When the engine is cold the engine needs to add more fuel to the engine. If the fuel injectors are dirty or you have carbon build up on the valves then this can cause the running problems. I recommend having the engine checked by a mechanic like one from YourMechanic to perform cleaning the injectors and throttle body intake valves of carbon buildup. This should help clear up the running problems if all the regular maintenance has been done like ignition tune up. If not then it should be done at the same time.

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: I have a click when I turn the key and I got a new battery and it still won't start

Hello there, many common problems will cause your 1997 Ford Ranger to have a crank no start condition. Replacing the battery is a great place to start as this is the most common fault when the vehicle will not start....

Q: cv axel passenger side replacement

Hi there. In order to request this service, or get an estimate, please click this link and then click the blue Get a Quote button on that page so we can receive your information and send you a quote. ...

Q: There is hesitation to press the accelerator during engine start and cold engine

Hello, thanks for writing in about your Toyota Camry. You should have the fuel injectors and combustible chambers cleaned of carbon deposits. The build up of carbon on the valves and injectors can cause the engine to run rough and...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.