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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 03-11-2005, 02:05 AM   #1
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I am looking to find out which sensors control fuel delivery and timing in open and closed loop operation. Thanx in advance.
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Old 03-11-2005, 02:08 AM   #2
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Can you tell us what your symptoms are? The primary sensor is the ECT, but there are other factors. It'* a complicated mess.
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Old 03-11-2005, 11:30 AM   #3
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there are ALOT of sensors are involved in Loop status
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Old 03-11-2005, 12:34 PM   #4
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my car runs fine. This info is for personal use. I am writing an article.
Also if the ect sensor is bad will it affect the temp guage?
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Old 03-11-2005, 01:11 PM   #5
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your best bet would be to get a FSM
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Old 03-11-2005, 01:34 PM   #6
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Quote:
Originally Posted by d.denis
my car runs fine. This info is for personal use. I am writing an article.
Also if the ect sensor is bad will it affect the temp guage?
Absolutely.
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Old 03-11-2005, 04:10 PM   #7
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err...You have two temp sensors, one goes to the PCM one goes to the gauge. Thinking it was in a drunken stupor. As far as the sensors that turn on and off between open and closed loop...none really. The PCM just ignores the o2 sensor till it thinks its warmed up enough. It'll also ignore it during a WOT run.
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