Q: Car loses rpms when idling and dies when not giving it gas on first run.

asked by on

In the morning when it's cold I need to keep the gas pedal floored for it to turn on and if I let off the gas the car dies, as if it can't idle on it's own. Tried warming it up in the morning (giving it gas myself the whole time) and it would still die. Only later when it gets a little warmer out it will idle fine but still needs gas to start. What could be the problem? I've changed out all the spark plugs, tested my battery and made sure there's a solid connection on the posts.
My car has an automatic transmission.

Hello. It may be a problem with the choke on the carburetor. Try some carburetor cleaner in and around the carburetor, especially the choke plate. On a cold start no matter the temperature, the choke plate should be mostly closed. Then after warm-up, it should be completely open, pointing straight up and down. If it is not doing these things, the choke pull off - which I believe is both electrically and vacuum controlled is not functioning properly. Check the electrical connector as well as the vacuum lines to the choke pull off. If you have a hand-held vacuum pump, connect it to the choke pull off and apply maybe 5-10 inches of vacuum. The choke plate should move and the pull off should hold that 5-10 inches of vacuum. If it does neither, then the rubber diaphragm inside the pull off has ruptured and will require a new choke pull off. For help having this issue handled, a qualified professional from YourMechanic can diagnose the rough idle and help follow through with repairs.

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. Car loses rpms when idling and dies when not giving it gas on first run.

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: Q: Losing power

The exhaust leak should be repaired first. Leaking carbon monoxide is bad for your health and could be deadly. In addition, exhaust leaks can cause engine malfunctions, particularly if an O2 sensor is affected. So, you should first have the...

Q: Ocassioanl stalling at idle, RPMs fluctuate at idle - 1995 Chevrolet K2500 Suburban

You either have a leaking injector that is dripping fuel after you shut off the engine and causing a flooded engine and will cause the hard start and erratic running conditions. You could also have a fuel pressure regulator or...

Q: Q: overheating

You most likely have a coolant leak in the radiator. Running your Accord low on coolant will damage the engine and blow the head gasket. Have the cooling system pressure tested to see what is leaking.

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...