87 7mGTE no spark

[TransAmMan]

Hey guys,

So I've got an 87 7mgte, stock everything. I was in the store when it was raining heavily, attempted to crank it and it wouldnt spark at all. We retimed it, nothing. We tried a known good ignitor, coilpack, and shot out the cps (which checked good, air gap as well). Any ideas or tips on what to do next?

 

[plaaya69]

Is your fuses good? Does your Supra have a sunroof? I have had a cps go bad with the wires inside the unit shorting out and touching the body of the cps unit causing a no start condition.

 

[TransAmMan]

I appreciate the quick return. It's a hardtop car. I've checked all the sub-30 amp fuses. The resistance is reading within the TSM 's readings for the cps, I even spun it to check the accuracy of the readings. Any particular fuses I should be looking for, or a more reliable way to test cps?

 

[Raggan]

Its probably the wires going across the valve cover to the cps. They get brittle and break i would rewire it

 

[Nick M]

Pull DTCs. See if you have 12 when you short T1 and E1. Or it might be TE1.

 

[TransAmMan]

It popped a Tps fail, could this cause it to not spark?