I hate the check engine light - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-25-2005, 02:32 PM   #11
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Garb..need a scan.
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Old 11-25-2005, 06:03 PM   #12
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Yep, I'd say scan for codes.... If the PCM sees no speed from the VSS, or Pluse rather than the speedo could drop to 0, and the PCM will be confused as to how fast the car is going and what gear to be in... In a situation like that I believe that it goers into limp home mode...

Did all of the gages do this or just the Speedo?

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Old 11-26-2005, 12:05 PM   #13
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As far as I noticed the speedometer did it and the tachometer did the same. Im tellin you though, it all happened in an instant, if it werent for the thump I wouldnt have looked down. Well I tightened the gas cap, but Im 99.9% sure it was tightened all the way. The light howvere DID go off. If I go to autozone today will they be able to tell me what it was?
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Old 11-26-2005, 12:13 PM   #14
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They'll be able to tell you what it was depending on what it was. Make sense?

I can tell you what it WASN'T. It wasn't your gas cap.

If it was speedo only, and the bump was related, it COULD be a diff pin or other trans issue in that general area of the VSS. Something to keep an eye on (fluid color). This would probably NOT set a code this early on. It must get much worse first.

If it was a power bump (temp loss), you probably won't throw a code either, but you're better off checking for them FIRST, so you can whittle away at it.
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Old 11-26-2005, 12:15 PM   #15
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Quote:
Well I tightened the gas cap, but Im 99.9% sure it was tightened all the way. The light howvere DID go off.
Clean the battery cable ends and fuhgeddabout it.
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Old 11-26-2005, 03:04 PM   #16
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Quote:
Originally Posted by Bob Dillon
Quote:
Well I tightened the gas cap, but Im 99.9% sure it was tightened all the way. The light howvere DID go off.
Clean the battery cable ends and fuhgeddabout it.
Id rather not...

Will, I assume you mean tranny fluid correct?

Could any of this be related to the leak I had in my car that same day?

I spent that entire day trying to dry it out, but there was water everywhere, alot of it came in from the windshield(which has been fixed), but more is comin from an unknown sourse I think.

Still havent gone to autozone yet, I dread that place and there no-it-all ********.
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Old 11-26-2005, 03:11 PM   #17
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Could be related if the water go into the maxifuse relay center.
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Old 11-26-2005, 03:22 PM   #18
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Quote:
Id rather not...
Suit yourself. If the scan comes up bupkes, though, I think you're OK.
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Old 11-26-2005, 03:34 PM   #19
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Quote:
Originally Posted by willwren
Could be related if the water go into the maxifuse relay center.
Something else to check then. I know that cover isnt on correctly.
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Old 11-26-2005, 08:16 PM   #20
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Ok so the code is a Cam Shaft Position Sensor. Tomorrow Im going to play around with it and see if its loose/melted/etc. Any other things I should look out for while Im reaching down there?
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