car run funny? - Page 3 - 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 10-11-2003, 11:53 AM   #21
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Well there'* plenty of torque @ 1500 rpms, and your car is modded, and it is an automatic so kinda holding speed isn't too weird.
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Old 10-11-2003, 03:37 PM   #22
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Back side of the TPS. The lever is what follows the throttle. 2 screws hold it on, 3 wire connector at the top of this pic, but it points down when installed:



Front side of the TPS. This is the side you see on your TB from the front, but it'* turned around (fat part at top, skinny part towards the bottom):



These pics are of Jseabert'* failed TPS. His idle was unstable, and cruise control would not engage. 2 very common symptoms, but by no means all of the possible symptoms.
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Old 10-11-2003, 11:50 PM   #23
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[quote="willwren"]Back side of the TPS. The lever is what follows the throttle. 2 screws hold it on, 3 wire connector at the top of this pic, but it points down when installed:

Hey Will, I need to change mine, dosn't look to hard to do...what is it, just 2 screws
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Old 10-12-2003, 01:24 AM   #24
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2 screws, one connector. Just make sure the pin on the throttle shaft engages the lever on the TPS correctly. You can see it easier with a small mirror from the back side when it'* installed.

Piece of cake. Should take you 2 minutes.
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Old 10-12-2003, 06:20 AM   #25
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ha! 2 minutes... took me two hours, and $50 for the 93. simple once you get the right tools (1/4 in combo wrench and standard bit), but until i figured that part out i was ready to kill people...
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Old 10-12-2003, 12:14 PM   #26
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1/4" wrench? Are we talking about the same part here?
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Old 10-13-2003, 02:58 PM   #27
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It may be easier to replace on the normally aspirated models, but I agree that on the supercharged models (my '92 and '93 anyway) it'* definitely not a 2-minute job.

And beware that some (but not all) of the TPS sensors are adjustable in their mounting position. If it'* adjustable, the 2 mounting holes will have oval openings rather than round ones. I found out about this adjustment because an SES light came on after I replaced the TPS on one of mine. I had to adjust it. If it'* adjustable, you'll need a digital voltmeter to set the idle voltage to within spec. And interestingly enough, my 2 sets of factory shop manuals for the '92 and '93 had different numbers listed. And the Chilton'* manual had yet another set of nominal voltage values.
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Old 10-15-2003, 11:27 AM   #28
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Quote:
Originally Posted by billha
It may be easier to replace on the normally aspirated models, but I agree that on the supercharged models (my '92 and '93 anyway) it'* definitely not a 2-minute job.

And beware that some (but not all) of the TPS sensors are adjustable in their mounting position. If it'* adjustable, the 2 mounting holes will have oval openings rather than round ones. I found out about this adjustment because an SES light came on after I replaced the TPS on one of mine. I had to adjust it. If it'* adjustable, you'll need a digital voltmeter to set the idle voltage to within spec. And interestingly enough, my 2 sets of factory shop manuals for the '92 and '93 had different numbers listed. And the Chilton'* manual had yet another set of nominal voltage values.
Ok this job seems to be getting harder
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Old 10-15-2003, 11:36 AM   #29
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95neongirl,
On your '94 SE, it'* probably easy to replace the TPS sensor. It has 2 mounting screws, and they're probably easy to access on the non-supercharged engine. My comment was that on the supercharged engine, those screws aren't so easy to get to because the EGR valve and piping are in the way.
And if I remember right, the TPS sensor on my '92 had the adjustable mounting holes but the one on my '93 had round holes. My guess would be that maybe the '93 and newer ones aren't adjustable, and this makes it easier to replace them.
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Old 10-15-2003, 12:21 PM   #30
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thanks billha
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