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Anyone else's ECU go goofy sometimes?

Posted: November 6th, 2004, 6:04 pm
by lakersfan1
About once a week, I'll start my car and the check engine light will be on and my car will run like it's in diagnostics. All I do is turn the car all the way off, and immediately back on, and it's fine again. WTF is that all about?

Re: Anyone else's ECU go goofy sometimes?

Posted: November 6th, 2004, 10:49 pm
by stang67fb
sounds like you have a short somewhere or a bad ecu

Re: Anyone else's ECU go goofy sometimes?

Posted: November 7th, 2004, 2:38 pm
by jumboplay
I've heard of this before. My friend's GS did the same thing. He went to the junkyard and pulled another GS ECU...never happened again. If it's free or close to it, it's worth a shot. But definitely check other things first...a short or a loose connector on a sensor or something.

Good luck!
BTW, what's the code that you get when it's on?

Re: Anyone else's ECU go goofy sometimes?

Posted: November 7th, 2004, 2:44 pm
by lakersfan1
BTW, what's the code that you get when it's on? [/QB]
Nothin. I shut the car off to put the jumper in the diagnostics box, and the CEL is gone already.

Re: Anyone else's ECU go goofy sometimes?

Posted: November 9th, 2004, 4:25 pm
by atx_mx3
How can you test to see if your ECU is bad? Is there a way?

Re: Anyone else's ECU go goofy sometimes?

Posted: November 9th, 2004, 6:59 pm
by IanL
Swap in a "known good" ECU and see if the symptoms go away. Other than that - send it away to a specialist.

Re: Anyone else's ECU go goofy sometimes?

Posted: November 10th, 2004, 12:05 pm
by atx_mx3
damn...i was hoping it would be easier than that. Thanks