O2 sensor and TPS - 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 10-22-2002, 11:19 PM   #1
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Default O2 sensor and TPS

Hey guys (and gals), JSeabert and I are working on his car.......first thing, does anyone know the P/N for a TPS sensor? 93SSE. (rat?)

Second, we discovered something interesting. There are apparently more differences between the 93 SSE and SSEi.....My O2 sensor is a 1-wire.....with ground coming from the exhuast. Josh'* is a 3-wire. Is this the same as a 94 SSE? Allmachtige? Anyone? Need to know how many wires you have, and if this is an indication of a pre-heated unit. I don't understand why the Series I would differ between NA and SC on this part.
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Old 10-23-2002, 12:05 AM   #2
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Default Re: O2 sensor and TPS

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Originally Posted by willwren
Hey guys (and gals), JSeabert and I are working on his car.......first thing, does anyone know the P/N for a TPS sensor? 93SSE. (rat?)

Second, we discovered something interesting. There are apparently more differences between the 93 SSE and SSEi.....My O2 sensor is a 1-wire.....with ground coming from the exhuast. Josh'* is a 3-wire. Is this the same as a 94 SSE? Allmachtige? Anyone? Need to know how many wires you have, and if this is an indication of a pre-heated unit. I don't understand why the Series I would differ between NA and SC on this part.
I looked in the 93 service manual for ya...

The supercharged engine has a one-wire oxygen sensor, while the N/A engine has a three-wire oxygen sensor. But you already knew that!

I think you are right about the sensor being heated, but I can only verify the wires by the manual. FYI, I changed my sensor last week and it had one wire.
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Old 10-23-2002, 01:56 AM   #3
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Default Re: O2 sensor and TPS

Quote:
Originally Posted by willwren
Hey guys (and gals), JSeabert and I are working on his car.......first thing, does anyone know the P/N for a TPS sensor? 93SSE. (rat?)

Second, we discovered something interesting. There are apparently more differences between the 93 SSE and SSEi.....My O2 sensor is a 1-wire.....with ground coming from the exhuast. Josh'* is a 3-wire. Is this the same as a 94 SSE? Allmachtige? Anyone? Need to know how many wires you have, and if this is an indication of a pre-heated unit. I don't understand why the Series I would differ between NA and SC on this part.
The P/N for the 92 is 25532800 BUT for 93, GM doesn't list one in my book! It just lists the TB service Kit P/N 24501318 though. As for the O2 Sensors...The 1 wire is non-heated, while the other 3 wire is heated!
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Old 10-23-2002, 02:09 AM   #4
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Its below 40F out, I am NOT going out to check. But from what I recall mine does have more than 1 wire. And Deathrat pretty much proved it.
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Old 10-23-2002, 09:11 PM   #5
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coool....Duh. thanks jr.
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Old 10-23-2002, 09:21 PM   #6
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I think he'* gotta broken wire between the tps and pcm. Gonna swap my tps into his car saturday to make sure.....then pull both our pcms....his to shoot wires, mine to pop in the magic chip!

Hehe. Supposed to shave 1/2 second off the 0-60. Fastest old guy in the west.
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Old 10-23-2002, 10:37 PM   #7
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jr3800 is correct. I was cleaning my TB, and made the mistake of removing my TPS and then just bolting it back on without calibrating it. The car ran like crap. You have to jumper the wires and use a digital multimeter to correctly position it for the correct idle voltage.
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Old 10-24-2002, 12:24 AM   #8
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My book is blank on that......I'll have to dig. Anyone got a procedure?
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