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Did I FRY my Trans Am's Computer?

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Old Jan 14, 2001 | 07:23 PM
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Did I FRY my Trans Am's Computer?

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Old Jan 14, 2001 | 07:47 PM
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Tom,

Maybe, maybe not. What engine/trans/fuel system do you have?

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Old Jan 14, 2001 | 07:52 PM
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Old Jan 14, 2001 | 07:55 PM
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Tom,

Never mind, I just caught the signature. Since the TPIs mostly had automatics in '86, I can guess it's a TH700-R4.

Since it's a TPI, the ECM is more involved in engine control than the carbed L69.

Disconnect the battery for about ten minutes. While the battery is disconnected, turn on the headlight switch (I know they won't work, but the load will completely drain any residual power from the ECM components faster.) While the battery is disconnected, you might as well clean the cables. When that's done, check the fuel pump fuse near the battery. It supplies not only the fuel pump, but ECM as well.



Replace the fuse if it has failed. Reconnect the battery and allow it to charge from either the jumper cables or a charger. Jumping to start it shouldn't be a problem. Before attempting to start the engine, watch the SES lamp while you turn the ignition switch to the RUN position (not START). The SES should light, go off briefly, then light again and stay lit until the engine is running.

Report back as to whether the SES flashes or turns on at all.

Waiting for results...

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[This message has been edited by Vader (edited January 14, 2001).]
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Old Jan 14, 2001 | 08:00 PM
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From: Vereinigten Staaten
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Transmission: Pick
Definatly sounds like you popped a fuse. Just hope thats all it is.

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Old Jan 14, 2001 | 08:59 PM
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Old Jan 14, 2001 | 11:28 PM
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Originally posted by Tom Batts:
Thanks, Vader!!!!!!!!!
... I'll give it a try tomorrow. I sure hope you are right. I'll post the results when I know something. This board ROCKS.
Don't thank me. The entire board is made up of people sharing their experiences and ideas. I've learned a lot just by watching. I'll share whatever I can if I have a clue about the topic. And if the muck gets really deep, GMTech is one of the guys/gals that can bail you out. He and many other certified techs are a real asset to the board, not to mention those hobbyists that aren't certified but have a lifetime of knowledge and experience.

Put it all together, and yes, this board ROCKS!

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Old Jan 15, 2001 | 07:47 PM
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