Skip the auto shop - Our mechanics make house calls

Q: Car surges in gear when stopped and it is starting to completely shut off/die after surge.

asked by on

Truck surges, (tack comes down way low then jumps back up, then comes down way low then jumps back up), not all the time though. And only does it when in gear and stopped. Now (last 3 days) when I am slowing down to stop the car just dies/shuts off. Car starts up no problem but when I slow down again it dies.

My car has 19900 miles.
My car has an automatic transmission.

A: This sounds like you may have a faulty idle...

This sounds like you may have a faulty idle air control module. This is a component that monitors the flow of air into the engine at idle speeds. The purpose of this is to regulate the air being mixed with fuel prior to being injected into the motor. When this is faulty, it can cause the surging effect as you are describing. This could also possibly be a faulty mass air flow sensor which does something similar in that it regulates the amount of air being allowed into the intake system at regular speeds. I would recommend having your stalling issue diagnosed by a certified technician, like one from YourMechanic, who can come to your home to service your car as necessary.

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Fuel Mileage

Hi there. When the engine and fuel system is running efficiently, fuel mileage is actually driven by the driver. The smoother they are with applying the throttle, the more efficiently fuel will flow through the engine. However, when the motor...

Q: My 1988 Chevrolet Silverado 1500 has power in reverse but spits and sputters with hardly any power in drive.

Hello and thank you for your question. Sounds like the manual valve is out of adjustment and the transmission is applying the forward and reverse input clutch at the same time. This will cause the issue you are having. You...

Q: Car overheating despite repairs

The first plan of action would be to ensure that proper parts have been installed and that installed correctly, such as the right temperature thermostat. Also that the correct coolant had been used. Another thing that can cause overheating are...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.