P0171/check engine/traction off. Related issue I think. - 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 06-15-2007, 06:24 PM   #11
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How do you read those scanners that let you know everything that is going on? I was looking at the maf numbers and it was reading 4.8 at idle and it had a suggested value of 4 at idle. The guy who runs our repair garage had one and he let me play around with it. I didnt know what i was looking at or what i was looking for. Soooooo many more options then the orange scanner im use to using. Is it something specific im looking for with this high tech scanner that can help me track down this problem even more? I had a air fuel ratio of 14.1 if this helps any.
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Old 06-15-2007, 11:06 PM   #12
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99% sure no scanner is going to help you solve this one.

The FSM doesn't involve the scanner in the diagnosis and correction for anything but clearing the code.
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Old 06-16-2007, 02:15 AM   #13
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Did you ever try putting the MAF screen back in?
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Old 06-16-2007, 01:42 PM   #14
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Quote:
Originally Posted by Archon
Did you ever try putting the MAF screen back in?
I just did yesterday.. I did notice that when i put the screen back in the traction light doesnt come on by itself since then and the boost gauge is on dead -10. Hope this will work.
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Old 06-17-2007, 02:23 AM   #15
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Well low and behold when I put the screen back in a day later the CEL goes off along with that pesky traction light. . thats weird. I have the screen off for three months with no problem and now it wants to come on.. . Im thinking that if you have a intake leak some place else and the screen is off you will get a CEL but if your are air tight then the screen off will now affect you.
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