88 7mgte- no spark still after several new parts

[Patch]

Bought an 88 model supra today that won't turn on. Gets fuel, cranks real strong, but no spark. Changed out the ecu, igniter, resistor, coil pack, plug wires, cps, and tps. Grounded a plug out, turned it over, nothing.

If someone could chime in with another possible problem, please do. The guy I bought it from mentioned that if you player with the tps a bit, it would fire over and run real good. But if you opened the glove box, it would immeadiately turn off.

I'm pretty much at a stand still as to what next. I have a spare harness but id prefer not having to go through that hassle if I don't have to.

 

[Patch]

Btw, the car is not throwing any codes.

 

[dumbo]

grounded plug out?

i would visually check the wiring of the harness. how do you know its getting fuel. is you cel on key off.


open the gb and car dies; hmmm i would check the harness around the ecu plugs forsure.

 

[Patch]

I'm in the process of. Replacing the harness. I took the old one out and it looks like crap. I'm checking my spare one and soldering up any and all breaks in the wiring. There's a couple things I'm confused about though.

When I was pulling the harness in the car, a thick red wire coming from the ignition switch was spliced into a short blue\black pigtail the drops down through the lower intake manifold. No clue what that is.

Also, right around the same area, both harnesses have a thick solid brown wire that's cut off. My spare harness, however, has a blue wire spliced into it, but no connection on the end.

I'm going to go through the wiring diagrams and see if I can figure it out.

 

[dumbo]

I'm in the process of. Replacing the harness. I took the old one out and it looks like crap. I'm checking my spare one and soldering up any and all breaks in the wiring. There's a couple things I'm confused about though.

When I was pulling the harness in the car, a thick red wire coming from the ignition switch was spliced into a short blue\black pigtail the drops down through the lower intake manifold. No clue what that is.

Also, right around the same area, both harnesses have a thick solid brown wire that's cut off. My spare harness, however, has a blue wire spliced into it, but no connection on the end.

I'm going to go through the wiring diagrams and see if I can figure it out.

cant help you there, when i swapped my harness i dont remember any wires i had to chase to my ignition. maybe some pics and a location.

and i would stop just replacing things until you find out the problem

 

[Patch]

I swapped the harness and a few other things and it started right up.

But it has rod knock. Can't/can believe it. It was advertised as having absolutely ZERO motor problems.

Lies. So now I'm selling the piece of crap to try to get my money back.

 

[dumbo]

well i just about to congrats you but that sucks

what are you doing with the harness? wanna sell it?

 

[Patch]

Only if the car doesn't sell, sure.