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1G Wiring help. Do the coils get one yellow black from PTU and one yellow green from ECU?

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skunkprodigy

5+ Year Contributor
45
5
Nov 17, 2017
flint, Michigan
I'm not getting spark and seeing non burnt fuel in 2 cylinders. I think I have wires mixed up, cut harness back and found 1 wire going to the coil on plug from the PTU and 1 from the ECU harness
 
Where did you cut the harness - on the coil? The coil's yellow-black and yellow-green both go to the ptu. The yellow-green also goes to the engine speed adjust connector (on the firewall) where it becomes a white-black.
 
I'll send you a picture later today.
Man this elec problem is not fun. I have a msd dis-2 plus, spark tech c.o.p, and hacked wiring system.

Only car I git right now, house was broken into took work van, vandalized my talon, put 2 qrts of 2 cycle in tank. I've ran 3 gals of gas through 4 times emptied. fresh gas try to start clean plugs. repeat. last time replaced plugs ngk bpr8es.

About to loose house if can't get this car running correct, it starts runs but very rough. Only mechanic i know close decent around flint is the one I think was behind whole thing.I hate to put myself out here but I've exhausted all favors,rides,and money I had left. Just glad I had hidden kill switch hooked up on the msd and cpl of wires apart or car would be gone with everything else

Where did you cut the harness - on the coil? The coil's yellow-black and yellow-green both go to the ptu. The yellow-green also goes to the engine speed adjust connector (on the firewall) where it becomes a white-black.

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Last edited by a moderator:
Where did you cut the harness - on the coil? The coil's yellow-black and yellow-green both go to the ptu. The yellow-green also goes to the engine speed adjust connector (on the firewall) where it becomes a white-black.
Yes thank you . I was trying to figure out why the yellow wire looped back from the ptu and not both from the ecu like it shows in shop manual . Should have worded it better , rn I'm putting it back stock coils back on and wires ...process of elimination 🤔 thank for answering though .I appreciate it very much..
 
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