My 91 Formula 350 will start and run for about 3 minutes then it dies and won't start. With the ignition switch on the fan comes on and a few of the relays keep clicking on and off like the EGR sol, the charcol canister purge and the fan relay. The SES light blinks every time the relays click. And the car won't start unless you wait for like 10 min. I have checked and I have spark and injector pulses during this non start condition.

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91 Formula 350 TPI,ASCD RA hood,1.6rr's,aluminum driveshaft,SLP 1 3/4" headers Mufflex3.5",AS&M SSM runners matched plenum, chip,TCI trans.

RWHP=261 RWTQ=349

 

Does it crank? what all does it do when you turn the key, just spin over?

Next time, dump the ECM memory, get it running, take it on a short drive (if possible, shut if off before it stalls, and check for codes. Some people don't like dumping ECM data, that's understandable, in that case, just jump to the running/ code reading. Is your fuel pressure/filter OK? Are there any loose grounds for the ECM or on back of the engine? Sounds like an ECM problem, maybe.

[This message has been edited by dhirocz (edited March 21, 2001).]

 

yes it does crank over during the nostart condition just fine it just will not fire. The filter is new and I just set the fuel pressure about a month ago. I agree I really think it is computer related When I get back home next weekend I will hook up the datamaster software and try and figure out what is happening.
Are there any ECM grounds that are connected to the heads like on the Exhaust because I just installed headers last weekend.
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91 Formula 350 TPI,ASCD RA hood,1.6rr's,aluminum driveshaft,SLP 1 3/4" headers Mufflex3.5",AS&M SSM runners matched plenum, chip,TCI trans.

RWHP=261 RWTQ=349

[This message has been edited by 91RamAir Formula (edited March 21, 2001).]