I have an 84 brat turbo, which the car dies after driving, very intermittent, A quick Key off, on will get it going again.
it idles for a few minutes then just shuts off.
I replaced the computer, mass air flow, Distributor.
I recently replaced the transmission. the car sat for a few months with the key accidentally left on (battery dead)
after the automatic tranny swap, it had 2 bad injector coils.
two injectors replaced, it would run, but had a bad miss at various rpms. so I ordered a remanufactured computer ecu. this did not fix it
I then unplugged the mass air flow. it ran better, but not right, so I bought a remanufactured MAF. this made it a little better, I then replaced the entire distributor, no change. I unhooked the knock sensor unit, unplugged the altitude sensor, etc
eliminated every electronic component I could still intermittent acts up.
It does this with the anti knock control unit unplugged.(car will run without it) It idles better with the Mass Air flow unit unplugged as well.
I measured all wiring from engine side of wire harness to the ECU, nothing measures bad.
UGGGG!!! at this point.
Tomorrow I plan on replacing the coil, and fuel pump.
seems to act up when I hit a bump on a right hand turn.
also, with headlights off it runs better.
Im thinking either the fuel pump is getting knocked and acts up, Coil may be getting hot and drawing more current, or alternator is acting up when hot. Car runs with battery terminals unhooked, so I know alternator is charging.
I will ultimately fix it and post my findings.
I still love my little money pit.....BTW also has a new turbo....wheel bearings,
got a small fortune in it.... I named it Johnny Cash..... one piece at a time....only wish it didn't cost me a dime...