Engine codes, please help - 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 06-28-2007, 11:20 AM   #1
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Default Engine codes, please help

Hi, I'm new to the forum and just trying to bring my newly accuired 92 SSEi back to a good standing. Car sometimes starts bad, tach guage is constantly moving up and down in idle, car runs rough and even stalled twice on me. I currently waiting for my factory manual which is on its way. I did the scan and have a following codes come up.

**Computer codes
-engine codes
#41 - no camshaft reference signal
#66 - a/c freon low

-history codes
#18 cranc signal open or no signal
#41
#45 L.F. inlet valve circuit

Things I have done on car:
-all fluids and filters
-spark plugs & wires
-cleaned TB & MAF sensors

Where should I start looking? I have on hands: new O2 sensor, new IAC sensor, fuel filter. Going to replace them this weekend
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Old 06-28-2007, 04:46 PM   #2
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It'* time to start looking at the various items. Look at the wiring for the ICM/crank/cam for any rubbing or breaks. Check the connectors and clean any corrosion.

I would say pull the cam sensor and turn the engine to find the cam magnet to ensure it'* there.
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