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Engine lights

Tiny
PATOCHAN
  • MEMBER
  • 2009 PONTIAC VIBE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 128,000 MILES
Computerized engine analysis check done after VSC OFF, check engine lamp, and slip lamp not going off on car listed above. The results found 2 plugs were loose cylinder 3 and 4. Shop tightened them. Results also said engine has low compression on all cylinders. #1 65 psi #2 62 #3 45 #4 55.

What do you think is the issue?
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Wednesday, December 4th, 2019 AT 6:39 AM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

What are the codes?

From the looks of the compression, you may have a timing issue between the cam and the crank.

https://www.2carpros.com/articles/the-reasons-for-low-compression

What did the shop tell you?
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Wednesday, December 4th, 2019 AT 7:00 AM
Tiny
PATOCHAN
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  • 4 POSTS
I did not get the codes.
The shop was Goodyear and they just did the diagnostic and tightened the 2 plugs, but did not say anything else.
What is my next best recourse?
Thanks!
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Wednesday, December 4th, 2019 AT 2:13 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Is the check engine light still on.

You need someone who will do a proper diagnostic and tell you the issues

I think you need a timing chain

Roy
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Wednesday, December 4th, 2019 AT 2:22 PM
Tiny
PATOCHAN
  • MEMBER
  • 4 POSTS
After a more comprehensive diagnosis I was told it was blown head gasket and would cost $3,000.00 to $3,600.00 to fix. I spent $6,000.00 on it 1.5 years ago. Probably better to cut my losses?
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Monday, December 9th, 2019 AT 12:05 PM
Tiny
ASEMASTER6371
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How did they determine the head gasket is the issue.

Roy
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Monday, December 9th, 2019 AT 12:23 PM
Tiny
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  • 4 POSTS
They hooked up a machine which emitted green smoke that they said meant the head gasket was bad.
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Monday, December 9th, 2019 AT 1:20 PM
Tiny
ASEMASTER6371
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The proper way to test is to do a leak down test. That is where they remove the plugs and inject air into each cylinder one at a time. Then they look for any movement in the cooling system with the air injected. That will confirm.

Roy
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Monday, December 9th, 2019 AT 1:43 PM

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