Heres a good one for you guys. I have an 89 Formula 350 w/TPI. The car has extensive modifications using mostly TPIS components including a level 5 chip. The ignition is MSD 6A and Blaster 2 coil. I've moved the battery to the trunk. All of the wiring has been checked and rechecked. I've got good voltage going to the distributor and comuter even during cranking. New battery, alternator, and computer. Here is the problem: The car burns out an ignition module after about 3 days of use. Only the injector side cooks as there is still plenty of spark but no fuel. If I replace the ignition module the car starts immediately. I have now replaced about 8 modules in the course of my troubleshooting. The car sits a lot and is not started for 3-5 days sometimes. Today I ripped out the alarm system that was tied into the VATS with a relay. I'm losing my mind. Once the car is running it is awesome but it is not reliable. There is no hint of trouble whilr the car is running. Only at startup. Anyone have a clue. I would appreciate any help.

 

are you putting enough grease under the module?????

 

I agree, sounds exactly like what happens if you don't put dielectric grease on the underside.
bsa

 

Thanks everyone for you replys. (except the wiseguys re:the ford module) jbenge pointed me in the right direction and it looks like my problem is solved. You guys are all right. Much thanks

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1989 Formula 350
Edelbrock aluminum heads
TPIS intake, runners, throttle body, zz-9 cam, level 5 chip.
Ported plenum.
SLP headers and exhaust
MSD 6A, blaster 2
sub frame conn.
bay brace
Hochkis trailing arms, panhard bar.
1LE aluminum driveshaft
Bilstien shocks
Baer Claw Brakes