Intermittent issue of not starting and shutting off while driving

KIMBERLEELUNA

MEMBER
2007 AUDI A6
3.2L
V6
4WD
AUTOMATIC
220,000 MILES

There's times that my car will start right up and I will drive it down the road turn it off in 5 minutes later it won't start it acts like it's dead but I know it's not dead. I just bought the battery like 2 months ago but when you go to put the jumper cables on the posts to jump it it starts too quick for it to be a dead battery, and like right now I came to the store and drove here perfectly fine it started up at my house and now I can get anything.

Thursday, September 16th, 2021 AT 8:15 PM

1 Reply

SQM

MECHANIC
6,383 POSTS

Hello,

Just to clarify you are unable to start it now? Even with a jump?

If you are unable to jump start it, then one of the most common cause for starting issues like this is a faulty coolant temperature sensor.
The sensor can have too much internal resistance and could be sending signal to the ECM that the engine is 'too hot' to start.

https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor

I have attached the coolant temperature sensor diagnostics for your reference. You will need a multimeter to do the testing.

Please let me know what else you are experiencing.
Thank you.

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