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: What sensor can cause delayed shift on a hard acceleration

Hey there. The transmission control module (TCM) helps regulate fuel efficiency and power while storing information about the transmission system in its memory. A faulty transmission control module may cause a delay in acceleration or erratic shifting of gears. The...

Q: when a front tire goes flat can the impact damage the steering gear

A flat tire would not create that type of damage to the steering gear. The previous noise that you had could have been related to steering gear. That has car has a steering rack assembly (gear). Unfortunately, I would need...

Q: Car sporadically idle high & runs around 1500 RPMS

Hi there. The most common causes of this on your vehicle are either a bad idle control valve, a dirty or failing throttle body, or a vacuum leak. It is very common for the engine to have a vacuum leak...

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...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...