Starts but will not stay running

ANDY2867

MEMBER
2010 CHEVROLET TRAVERSE
3.6L
V6
2WD
AUTOMATIC
131,000 MILES

The car will crank and idle for a couple of seconds and the car will die unless you press the pedal to keep up the RPM. More info. With the RPM sitting at 3,000 RPMs the RPM will constantly cut out to about 2,000 RPMs and go back to 3,000. Took it to firestone and they replaced a bad crank shaft sensor. However, car still has the same issue and they don't have a clue what might be the cause.

3 Replies

SQM

MECHANIC
6,383 POSTS

Hello,

A dirty mass air flow sensor can impact the idle in this manner.

https://www.2carpros.com/articles/mass-air-flow-service

Is your check engine light illuminated? If so do you know what are the codes?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Is this something that's been going on for sometime, or it just started all of a sudden?
Let me know a little more info.
Thank you.

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Friday, August 27th, 2021 AT 7:17 PM

ANDY2867

MEMBER
2 POSTS

Just happened. Driving home and the engine kind of hesitated a couple times. Got home and turned off the car and ran in the house for a few minutes. Came out and started it and put it in reverse and the car shut off. Same thing several attempts. I was able to keep the RPM up enough to drive it out of the way. It did have codes, but I can't remember them now because the car has been sitting for a month. I think P0017 and some other one. Don't know if this has anything to do with it. I had a bad tire pressure sensor on one tire. I went to firestone to see if they could reprogram the tires because the system had them backwards. Because of the one bad sensor they couldn't complete the programing and now none of the tires show pressure. I did get a engine reduced power and service stabiltrak and traction when I drove it to firestone. Just extra info that might help.

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Saturday, August 28th, 2021 AT 9:32 AM

SQM

MECHANIC
6,383 POSTS

The vehicle will go to reduce power or limp mode, to protect major engine components.
I think the best course to action would be to have the vehicle scanned that will help diagnose the issue.

https://www.2carpros.com/articles/engine-has-low-power-output

It could be as simple as a sensor that got loose or having connection issue or could be a throttle sensor issue.
If you can scan and get all the codes that will definitely help. Just about all the local auto parts store have scanners that can be use to retrieve the codes.
Let me know what you find.
Thank you.

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Saturday, August 28th, 2021 AT 8:09 PM