1986 EA82T electrical failure

[WoodsWagon]

I had the turbo wagon back up and running after putting the rockers back in, it drove good, actually had some power, idled well, ect... So I left it running for 5 hours with the heat cranked to dry out the interior, it was fine, fan cycled on and off, held steady temp and stayed at 950-1k rpm. I took it for a last boot around, let it idle for 5 mins and shut it off.

 

An hour later I come back to it, it starts rough, ECS light is on, light goes out, it perks up and runs ok, I make it 800 feet up my driveway and it dies out like it's out of gas. Engine stalls, ECS light stays out. Fuel pump is not coming on. Now, the wierd thing is that the injectors are being constantly cycled with the key on, and the engine not turning. Tic,Tic,Tic,Tic,Tic, real quick like. Hooking test mode connectors up doesn't do anything, no other solenoids or the pump cycle, it just keeps the injectors going.

 

So I tried starting it again, and it fired up and idled around 1200, kinda a loping idle and filthy burn-your-eyes rich, but the fuel pump STAYED OFF. WTF? I'm thinking, so I prop the throttle open so it stays at 2100rpm, it's no longer rich, but still loping. Unplugging the MAF doesn't affect it. I figure it must be running on residual fuel pressure, so I leave it there. It stays running for another 5 minutes, so I try driving it back. I feathered the clutch and kept the throttle cracked and it got me 50 ish feet before I stalled it.

 

What kind of ************ed up failure mode is that?

 

I'm thinking the ECM is heat-unstable, but it stays running fine, it's only when you shut it off and let it sit that it screws up.

[Cougar]

I think your are correct about the ECU having a problem. You may need to replace it.

[john in KY]

FPR failed?