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635 Posts
Discussion Starter #1
I have a 92 sc300 1jzgte Well today i decided to extend my wiring harness from the ecu because i needed the ecu to sit a little lower. Prior to my extension of the wiring, my car ran good. Now it idles at low rpms and the car has no power whatsoever......ANY IDEAS? iLL POST A VIDEO OF WHAT ITS DOING LATER ON TONIGHT;
 

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supra love
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463 Posts
how far did you extend it and did you extend it right by the ecu or where at. check engine light on? did you check the new wiring?
 

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did you use sheided wires for the knock sensor? if not that might be your problem.thats why you dont extend the ecu harness ,its only problems
 

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Discussion Starter #4 (Edited)
I extended it by the ecu and extended it 8 inches ....what else could be the problem.?...I also used shielded usb for the 2 brown knock sensors
 

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JetFire
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5,396 Posts
I was going to do the same thing but found a patch harness from Autosport Wiring it's about 200 shipped but worth it. I can patch in whatever I need and the ecu will sit in a better position.
 
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