Engine will only start and idle rough with the oil cap off

Tiny
SHAWNA POOLEY
  • MEMBER
  • 2007 JEEP COMMANDER
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
If I put the oil cap on while running it shuts off the engine.
Please help?
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Thursday, March 18th, 2021 AT 11:40 AM

1 Reply

Tiny
KASEKENNY1
  • EXPERT
More then likely the PCV valve is clogged so we need to start with replacing this.

Here is a guide that helps with this issue if this is not it but the fact that the oil cap being removed makes a difference makes me pretty confident that this is the issue:

https://www.2carpros.com/articles/stall-at-idle

Below are the instructions that will show where this is and how to replace it.

Let me know what you find after this and we can go from there. Thanks
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Friday, March 19th, 2021 AT 9:13 AM

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