I have an ongoing problem with my 88 IROC 350 TPI. Car was running fine in driveway then just stopped. Since then car will start then stop almost immediately. I have checked out various things - found some problems and corrected them but car still stops.

I have checked the fuel pump / pressure and that is okay but there is definitely something strange with the electrical system. Without the ignition key in I have checked the voltage at the fuel pump relay and shows 12v which is correct - with ignition on but not turning engine over the relay is constantly clicking and voltage is about 6v. If I check for SES codes the light just stays on - no codes flashed, however if I remove the fuel pump relay the SES constantly flashes 12 but no other codes - also when I remove the relay one of my cooling fans starts and when I remove the paper clip from the ALDL connector the fan stops _ I swear this car is possessed.
I have now found that the knock sensor wire and connector was totally corroded and that the oxygen sensor wire is in pretty bad shape. Am just going to get new sensors but not sure if this is going to be the solution -
Has anyone had similar electrical problems - I am getting to the point where I think the only solution might be to put in a totally new wiring harness - has anyone done this and just how much is involved.

Any help appreciated

 

Swap your MAF relays w/ new ones and your problem will most likely be gone (or in the alternative buy one new one and swap one at a time till she runs).