Skip the auto shop - Our mechanics make house calls

Q: Car is starving for fuel at idle after warming up - 1991 Ford Mustang

asked by on

The issue is intermittent , once the vehicle has been driven about 40 min straight it wants to shutoff at an idle . It pops through the intake as I try to save it sometimes it picks up but most the time it falls on its face and doesn't wanna start back up. If I keep the rpm above 1500 it stays running but will try to die as soon as I let up. . I know it's fuel cause if I spray carb cleaner in the intake it picks back up and runs fine. Maybe failing pip or injector or fuel pump? 3 hours later just went out to try it and it runs fine . Something must be heat sinking .idk in my 10 years as a tech I never seen it

My car has 140000 miles.
My car has an automatic transmission.

Hi there. I usually start with the idle air valve in these cases, as it sounds like it might be sticking. Checking fuel supply - fuel pressure, filter, dirty injectors, as you have noted - is a good idea. You don’t mention any problem codes or a Check Engine Light, but I would also check to make sure there aren’t any transient codes.

If you would like some additional professional assistance, I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the car is stalling and suggest any needed repairs.

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
  • Home
  • Questions
  • Car is starving for fuel at idle after warming up - 1991 Ford Mustang

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: Previous owner had tuner but lost it

The new tuner will just save the program you have now and upload a new one. You can never get the factory program again if the tuner is lost, unless a dealer reprogrammed the computer with an update calibration file....

Q: won't stay running

The fuel injection system on these vehicles have had a lot of problems with the injector poppets not opening if the fuel pressure is too low. This will result in them being stuck closed and not being able to inject...

Q: How do I take care of the outside of my vehicle during storage?

If you ever need to store your vehicle for a long period of time, there are certain steps you need to take to make sure that it will be in good condition when you take it out of storage. To...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...