97 SSEi check engine lights - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-05-2014, 08:36 PM   #1
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Default 97 SSEi check engine lights

Recently my exhaust separated at the muffler inlet. We have fixed that issue. The tps was causing a check engine light off and on. That was the only code before the exhaust fell. After replacing the tps I had the vehicle scanned again and now I'm getting the following codes p0758, p0753, p1860 and the code for the tps as well. I disconnected the battery for almost an hour and no luck. When I attempt to accelerate it doesn't move until my rpms hit around 1800. It seems to be starting in second? I haven't had any transmission issues until these codes and I had the tranny replaced 32000 miles ago with zero issues since. Anyone that could shed some light on possible causes. Where are the solenoids on the trans and what is the likelihood of it being a mechanical issue when it showed no prior signs of failure before the exhaust fell. Any help is greatly appreciated. Also when I shift manually it seems better sometimes.
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Old 09-05-2014, 09:11 PM   #2
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Let'* see if we can get that TPS out of the way real easy quick like.

First make sure its installed correctly as I have shown in my video...


Once that is verified, check all of your fuses in the drivers side dash fuse box. I believe there is one in there that'* for the transmission.

BTW, you cannot clear codes by disconnecting the battery on 96 and newer vehicles. You need the scanner to clear them.
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Old 09-05-2014, 11:32 PM   #3
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BTW, you cannot clear codes by disconnecting the battery on 96 and newer vehicles. You need the scanner to clear them.[/QUOTE]


I disagree, disconnecting the battery will clear all dtcs and freeze frame data. Until the dtcs has been fixed it will just come back on when the ECM completes it'* self test.

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Old 09-06-2014, 07:51 AM   #4
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Show me.
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Old 09-06-2014, 11:33 AM   #5
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Old 09-06-2014, 11:39 AM   #6
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I think in the manual, for a '96 at least, for certain codes, like TPS, if you remove the PCM battery feed, it resets the codes....

Have you checked the output of the TPS? Back probe the dk blue wire,key on, engine off...

Should be less than a volt with throttle closed...and gradually increases with throttle opening to over 4 volts when wide open....

If the fuse to both solenoids is blown, it would be like trying to start in 3rd gear.....
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Old 09-06-2014, 08:15 PM   #7
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As soon as I get a chance I will check the TPS. I did just replace it but maybe the connector is bad. If I were to disconnect it while the car is running what would it do provided the sensor is working correctly? When I unplug the IAC I hear the idle change slightly. Also, could the TPS be the source of all the issues? I posted on here a while ago that when I would sit at a red light with the car in drive and the brakes applied, sometimes the lights would dim and as soon as I hit the gas the lights would brighten up again. I was thinking maybe a ground issue because I have had the battery and alternator tested several times and they always test perfect. So maybe a ground issue somewhere? I found an old webpage with a process for checking the TCC PWM sensor but I don't know how accurate it is . I'll reply again as soon as I check the TPS. Thanks again.
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Old 09-06-2014, 10:21 PM   #8
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One issue at a time please, just verify your TPS is installed correctly.
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Old 09-07-2014, 05:35 PM   #9
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It'* been checked. Everything in that department is working fine. The voltage and everything checks out. I brought up the ground issue only because I thought maybe that could cause the sensors to fail? But anywho. I'm ready for the next steps lol.
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