Q: Car dies if I let off gas pedal

asked by on

My car will not keep running. If I give it gas, keeping it above 1,500 RPMs, it runs good. If I let off of the gas pedal, it dies.

This is a common problem that I run across frequently on this engine. The most common cause of this is a bad intake manifold gasket. When this occurs it create a large vacuum leak that makes it hard for the engine to idle. It can also be caused by a number of other issues, but this is the most common. A mechanic would typically do either a smoke test of the intake manifold, or would check the fuel trim readings with a scan tool to see if there is a sign of too much air entering the engine. The smoke test would show the leakage and the fuel trim reading would show too much air entering the engine. I would recommend having your stalling issue diagnosed soon so that you don’t find your vehicle stuck out there on the road.

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. Car dies if I let off gas pedal

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: Car rattling upon acceleration.

The noise you may be hearing is either the catalytic converter is rattling from being broken up inside it. You may be hearing an engine ping that sounds like a rattle from the engine. It could also be one of...

Q: can the neutral safety switch be bypassed on my car??

The neutral safety switch is built into the transmission selector switch, and the power from the ignition switch goes straight through the switch when you are in park and neutral to the starter motor solenoid. There is no good reason...

Q: Car stopped moving suddenly, gears stuck

Hello there. This type of fault is not uncommon. There are a few different faults that would cause this on your 2000 Cadillac Catera, but since the engine runs properly the fault most likely lies with the transmission in some...

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...
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.