Stalls while driving

Tiny
KRISTI WILSON
  • MEMBER
  • 2011 MITSUBISHI LANCER
  • MANUAL
  • 78,000 MILES
Twice now my car has stalled when driving. The battery and engine light comes on when this happens. I can restart my car no problem and continue driving. It seems to be happening when I'm down shifting turning a corner. When I reduce my speed shift into third gear from fourth I notice the rpm's drop drastically. Car seems fine otherwise.
Thursday, October 3rd, 2019 AT 7:17 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Welcome to 2CarPros.

Does it seem as though the idle is just too low? I have to be honest, this could be several different things. First, if the check engine light is on, have the computer scanned for diagnostic trouble codes. Most parts stores will do it for free. Let me know if any are found.

If the light isn't on, check for engine vacuum leaks. Here is a link that shows how that is done:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Next, if nothing is found, it could be related to a dirty throttle body or even an Idle air control module (IAC). The IAC is responsible for idle speed. Here is a link showing how to clean a throttle body:

https://www.2carpros.com/articles/throttle-actuator-service

Here is a link showing how an IAC is serviced:

https://www.2carpros.com/articles/idle-air-control-valve-service

https://www.2carpros.com/articles/how-to-replace-an-idle-speed-control-motor-iac

Start with these things and let me know if anything here helps.

Also, I can provide specific info, but I need the engine size.

Joe

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Thursday, October 3rd, 2019 AT 6:27 PM

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