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Dies when it Wants to

Tiny
ALTHEA MAYBERRY
  • MEMBER
  • 2005 CHEVROLET COLORADO
  • 3.5L
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 75,300 MILES
Hello 2 Car Pros,

My Chevy Colorado is having an intermittent stumbling issue and it may or may not die. Also, If I am traveling on the highway and it dies it mysteriously starts itself back up. Earlier today I was sitting a a stoplight, and when the light turned green, it died. I had to start it back up. What could be the issue?

I have replaced the fuel filter and cleaned MAF sensor. There are no lights on the dash displaying an issue and it's not throwing any codes on my OBD2 reader.
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Saturday, December 21st, 2024 AT 3:32 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi:

It could be a fuel pressure issue or even the crankshaft position sensor. When they start to fail, often heat adversely affects them.

Do me a favor. Take a look through this link and let me know if it mirrors what you experienced.

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

Let me know. Also, if it stalls when you are driving, it must not be fully stalling. You may be experiencing a power loss due to a loss of spark that restarts and the engine then continues.

Let me know your thoughts.

Joe
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Saturday, December 21st, 2024 AT 9:50 PM

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