Need some help..issues tonight - Page 2 - 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 07-07-2010, 03:58 PM   #11
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All of the codes are current, I cleared all the codes and they set with in 30 seconds of clearing them.
I was reading some of the older posts that mention the codes. I checked all the fuses on the drivers side as well as the fuses in the engine compartment (based on something I read). The car starts fine now, but after 20 seconds or so, the check engine light comes on and the rpm goes to 2500. Speedometer is still dead. Both fans come on when I start the car, even with the ac off. (It is 94 outside today).
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Old 07-07-2010, 05:25 PM   #12
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The last time my 95 reved that high the IAC sensor came apart in my throttle body, just takes a min to check it out.
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Old 07-07-2010, 06:15 PM   #13
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I checked all fuses again just to be sure. I checked the IAC seems to be fine.
I checked the guides and all of the QDM codes can set because of the TCC, even the Injector Circuit fault can set because of the TCC. Even with the codes set, the trans seem to shift ok. I am puzzled. I have checked for burnt wires and bad grounds and did not see any problems. Just now I had it running, went up to 3000 rpm on its own. If I pulled the plug on the MAF the idle dropped a bit. I pulled it and it looked like new, don't know that it means anything but it was not gummed up or anything. I pulled the fan relays and it did not make any difference nor did it blow any fuses. So as of right now, car runs but idles high. AC/Fans...everything else works like it should.
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Old 07-09-2010, 12:12 AM   #14
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The computer is bad. I put the old one back in (The old one has the cam sensor problem) and the problem went away. The speedometer works, shifts correctly, Idles at 750 rpm.
I have to find the receipt and see if it is still under warranty.
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Old 07-09-2010, 10:01 AM   #15
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I didn't want to jinx you with it being a 95
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Old 07-09-2010, 05:43 PM   #16
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Gotta love those junk 1.5 obd'*.
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Old 07-09-2010, 05:49 PM   #17
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Funny, never had any problems with mine.... that is until I send it off somewhere.

Speaking of which, I have a 95 PCM from my old curse. Never had PCM problems. Let me know if you want it.
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Old 07-12-2010, 01:46 PM   #18
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After I replaced it, I still had a code for the TPS. I removed the connector and tested for voltage and have both ground and positive. I did this while I had a tech2 connected so I could watch for any changes. TPS is dead. So I will try and get another one tonight. I wonder if the bad computer killed the TPS or if it is just a random failure.

Mike1995, PM me with a price on the ECM. I would like to have a backup.

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