Check Engine light - Code P0171 and other issues - Updated - 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 03-11-2006, 02:57 PM   #11
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Did you check the main engine to battery ground near the starter?

I had many of the same issues as you, including low oil light, because of that ground.

Cheers,
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Old 03-11-2006, 03:41 PM   #12
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I am all over the grounds once it cools down. All heck just broke loose with a trans gear selector P0706 and P0171

Seems as thought it'* only once the motor is good and thoroughly heated insdie and out. Doesn't seem to happen when the exterior of the motor is cold.
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Old 03-11-2006, 11:56 PM   #13
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I'm really losing my sense of humor on this one. I tried a pcm swap after cleaning and fixing all the grounds. Nothing is having a positive effect here.

Got the gear indicuator light on the console blinking at times, no consistency or reasoning. The car doesn't seem to be letting me see what gear it thinks it'* in on the scan tool.

Everything I am having problems with is clearly connected through engine grounding. A theory Bob and I share about it is that something is backfeeding power to the engine, which is removing the grounding from the engine and causing the issues.

Tomorrow I am planning on changing out the oil level sensor, afterall...I saw a flash of a problem from it about a month back.....and now it'* the most consistently showing issue.
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Old 03-12-2006, 12:14 AM   #14
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can I suggest re-cleaning the grounds and then putting them back together w/o di-electric grease.

Not sure how you applied the grease but the whole idea of putting a grease that is supposed to stop the flow of electricity onto ground connections seems anti-productive.
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Old 03-12-2006, 12:27 AM   #15
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Would it be any kind of electrical u might have hooked up recently......heated seats, taillight.....something along those lines.......I really don't know about electrical that much.....just a suggestion/question.
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Old 03-12-2006, 09:08 AM   #16
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Good ideas guys..I appreciate all suggestions.

Dielectric is designed to keep corrosion from happening and causing the connection to be broken, it is suggested for all electrical connections. It doesn't keep the electrical from working.

On the mods, everything has been hooked up for months, I wish I had something new. The body seems fine and all is working great. The only question is the engine and this one ground circuit. Which controls ground for pcm, maf, engine oil level, PRNDL and indicator light...it'* all right there.
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Old 03-12-2006, 09:42 PM   #17
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Today'* fun was swapping the pcm'* back, Ensuring splice 110 was making good connection, and slapping an oil level sensor in because I had one here.

Good/bad
So far I haven't gotten a lean bank P0171 code or any others. The oil level light is still blinking on and the book says the circuit has an issue..lol

More news..
Ran home from Randy'*..no issues or blinks...went to the store and back...all seems well.

Can I possibly hope that some magical force fixed the car?
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Old 03-12-2006, 09:43 PM   #18
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you can hope.
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Old 03-13-2006, 10:31 AM   #19
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Ok..if this isn't fixed by NEBF...

You guys can stand around and troubleshoot...lol
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Old 03-13-2006, 12:39 PM   #20
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Quote:
Ok..if this isn't fixed by NEBF...

You guys can stand around and troubleshoot...lol
Kinda figured......I mean it is ur house.......u are the information/parts god.......and no need for the host to have a problem child!!
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