96 se code p0134 - 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 07-16-2007, 01:22 PM   #1
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Default 96 se code p0134

code p0134, changed o2 sensor 1 bank 1, changed fuel pump, fuel filter
checked wiring, 12+volts on power wire, good ground .
stalls at stop lights or when slowing down, easy restarts
still getting p0134 code
what or where im i getting lost missing
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Old 07-16-2007, 01:28 PM   #2
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Posting the code is frequently helpful.

DTC P0134 HO2S Circuit Insufficient Activity Sensor 1

Odd that it'* showing not enough activity. Have you checked the connections at the PCM? Also..pull your battery cables and clean all ends of all cables..ensuring you remove the boots from the battery end to check for corrosion.
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Old 07-16-2007, 02:11 PM   #3
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no not yet, also thinking of the buss bars
is there a bench test to verify the o2 sensor good or bad
could the pump relay be bad
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Old 07-16-2007, 02:17 PM   #4
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If the car is running..the pump relay isn't the problem. The fuel pump shouldn't to my understanding have anything to do with the O2 sensor not reading enough. Have you performed a pressure test to check the pump that way?
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