I've also taken apart harness nothing chewed or cut. All fuesable links are intact ( equal voltage on both sides ) I'm driving my self nuts. I've worked on these cars before and I've never encountered this. When I first start car its not rich. Once the idle drops and evens out that's when it becomes rich with visable smoke from tail pipes ( greyish not white or blue )
In the mean time I will be continuing the GT to LX conversion.
Ok new stuff to add to the list of things I've tried. I took a computer out of a running 87 fox DA1 same issue so I know my ecu isn't bad. Going to pull my dizzy and make sure its in the right tooth. previous owner replaced dizzy and may have placed it in wrong. Going to exchange TFI ( 5th time now... ) get a new coil and IAC. I haven't checked how much vacume it's making but I tried the " carb cleaner " trick around the intake gaskets and vacume lines. No change in rpm. Fuel pressure is within its parameters. Tps is set at .8 timing is set at 10* BTDC
Hi guys I'm new to the forum figured I'd register. The car V8demon is referring to is actually mine. To recap and update here is the car. 87 mustang GT 5 speed T-Top. long tube headers. Off road h pipe Mac dumps. Stock motor. New dizzy, MAP, TFI, ACT. ECT. TPS.Battery. Starter solenoid. Vacume lines. Now the car is still running rich. And acting like a dead battery on hot start. Leaning towards a bad coil killing my tfi ??? I also just got a DA1 out of a running 5.0. And thanks Paul for the post
