P0125 code, hard starting, and high idle speed. - Page 2 - GM Forum - Buick, Cadillac, 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.

P0125 code, hard starting, and high idle speed.

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Old 10-24-2006, 08:29 PM
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Well, after wiggling my junk, superglued sensor, the car seemed to settle down and drive normally again. So today I picked up the $15 Wells replacement from AutoZone and swapped it out. The car is back to idling and starting normally, and the CEL is no longer illuminated. The air conditioner also acts as it should, blowing cold air all the time now. I guess with a faulty or intermittent coolant temp sensor, the climate control thinks it'* blowing cool air when it'* actually picking up heat off the heater core?

At least all seems well again. Thanks for the advice, Boost
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