Q: Car stalls at traffic lights

asked by on

I have been having this issue since August, my car starts normally and drives fine but whenever I get at a stop light and I'm sitting at the light for more than a couple of minutes my car would slowly accelerate at best and at worst my car will completely stop and not move at all, everything would still be on and running but my car would be still. It's becoming a hassle to commute in my car and get anything done.

My car has 200k+ miles on it

My check engine light was on and it was my 02 sensors which I replaced and the light is off but that didn't help.

Transmission Fluid is fine.

I replaced the air filter and the car drove better but after being on the road for about 10-15 minutes it started stalling out at lights.

What could be any other possible issues I can fix?

My car has 200000 miles.
My car has an automatic transmission.

If this is happening primarily at stop lights, it may be related to a dirty or faulty idle air control valve. This is a unit in your car’s intake system that monitors the flow of air into the engine and adjusts the air/fuel mixture accordingly. When this is not working properly, it may cause the engine control unit (ECU) to make inaccurate adjustments to the air/fuel ratio, which could cause the stalling you described. When this happens, it is usually a result of the engine being over fueled or under fueled depending on what the idle air control valve is reading. I would recommend having an expert technician, such as one from YourMechanic, take a look at your car to properly diagnose your stalling issue.

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 stalls at traffic lights

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: Heavy vibration when braking above 40 mph. Also vibrates in the steering wheel

This may be a variety of things, such as wheels and tires out-of-balance, poor alignment, worn or failing wheel bearings, worn or failing control arm bushings, or worn or failing suspension components. A wheel bearing will usually fail due...

Q: Truck misfires when the engine warms up - 1995 Chevrolet C3500

If the heat sensitivity is a good clue, this could well be the ignition control module, which is quite heat sensitive on the big block Chevy's. Would check fuel pressure (while running) as well to make sure you're getting enough...

Q: I have a diagnostic trouble code P147d.

The code P147d is coming up for the fuel canister purge valve that could be sticking and not working properly. The purge valve is designed to control the emission's vapors in the fuel system. If the valve is not functioning...

Related articles

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...
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.