CHECK ENGINE LIGHT sick of it - 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 11-08-2005, 03:31 PM   #1
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Default CHECK ENGINE LIGHT sick of it

well i went to my brothers shop the other day my car was having some problems felt like it was boggin and when i floor it at 35 it wont go no where till it gets in high rpms so we changed the o2 sensor the check engine light went away for a week....now this week the check engine light is back on and the cars doing the same thing again im getting bad gas mileage etc i need help someone please lol :(
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Old 11-08-2005, 03:34 PM   #2
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check the codes.......and report them here
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Old 11-08-2005, 04:53 PM   #3
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its 99 bucks to get the car scanned no one else can scan it except the dealership ive had this car since it was new in 1995 when i bought the car we looked under the dash and someone from the factory moved the obd port somewhere else my brother said someone tryed to hide the port becuase they knew something was wrong with it in the first place since then ive had to replace a motor.. and many problems ive only had the check engine light come on 3 times the first time i could turn my car off and the check engine light would go away then the check engine light came on one day and it effected my motor so we changed the o2 sensor it went away and was performaning at its best then a week later the light came back on which is today and the car was running like a turd again idk what it is my bro dont know what it is we changed the o2 sensor again and its still there and running like dog someone pleaseeeeeeeeeeeheeeelllppp meeeee!
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Old 11-08-2005, 04:58 PM   #4
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You check the spark plugs yet? Don't know your car'* history, but sounds like a plausible excuse for not wanting to get up and go.
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Old 11-08-2005, 05:03 PM   #5
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In answer to your other post. 1995 SE is a series II and should have 2 O2 sensors.
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Old 11-08-2005, 05:24 PM   #6
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Scan the codes. Even if it costs you. We can't do any 'guessing' here.
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Old 11-08-2005, 05:26 PM   #7
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i replaced the 02 sensor behind the motor wheres the other one..i just put new plugs and wires on it 2 weeks ago..
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Old 11-08-2005, 05:36 PM   #8
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What brand O2 sensor? I've heard, and believe, these cars go through Bosch'* like candy...

And it'* pretty messed up that your sxan port is AWOL. I personally would put some effort into getting that fixed....
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Old 11-08-2005, 05:45 PM   #9
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O2 sensors RARELY throw a light when they fail. And a 95 doesn't have a second one behind the cat to my knowledge. Even if it does, it can't be causing a performance problem.

Quit shotgunning. You'll spend more on wasted parts than if you scanned it to begin with. Have you thought about the possibility that we may have a member with a scantool nearby?
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Old 11-08-2005, 06:19 PM   #10
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Quote:
Originally Posted by willwren
O2 sensors RARELY throw a light when they fail. And a 95 doesn't have a second one behind the cat to my knowledge. Even if it does, it can't be causing a performance problem.

Quit shotgunning. You'll spend more on wasted parts than if you scanned it to begin with. Have you thought about the possibility that we may have a member with a scantool nearby?
Correct, 95 only has one O2 sensor....

This car will have to be scanned with a scantool capeable of reading 1995 GM cars, with a 16 pin OBD2 cable... Its is OBD1, but uses OBD2 codes and connector...

Like it was said, these are all guesses... Keep guessing and you'll be throwing your money out the window

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