Skip the auto shop - Our mechanics make house calls

Q: Cold engine problems.

asked by on

When the engine is cold and I turn it on it starts up then chugs and then sounds like its going to die and runs low rpms and if I try to drive it studders unless I give it a lot of gas but if I start it when it's warm no problems. Check engine light is not on comes on every now and then but always turns off in 2-3 days what could it be?

My car has 155000 miles.
My car has an automatic transmission.

This may be related to the idle air control module/valve, which is a component that monitors the amount of of air intake at idle as it is mixed with the fuel prior to being injected into the motor. When this is faulty, it will cause an imbalance in the air/fuel ratio which can cause it to run poorly as you have described. These symptoms are usually accompanied by a Check Engine Light. I would suggest having an expert from YourMechanic come to your home to diagnose the loss of power to pinpoint what fixes will help get the car running at its best again.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Cold engine problems.

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: unable to consistently shift gear from park to drive

Hi there. This is commonly due to the brake light switch failing. The shifter locks itself in park until the brake is applied. If the circuit does not detect you applying the brake then it locks in park. Most of...

Q: Car starts up but when I go to drive it doesn't accelerate fast and it takes a while to catch up

Hello. The engine computer will need to be re adapted or re learned to the new throttle body. This will require a high end computer scan tool or a GM tech 2 scanner. A technician, like one from YourMechanic, can...

Q: Loud knocking/tapping from driver side of engine.

It would be difficult to determine the exact cause of this issue without physically inspecting the vehicle. However, I can recommend that if it is possible for you, I would replace the engine with another new or rebuilt engine and...

Related articles

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...
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...
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.