please help!! car keeps dying!

[hyperformance]

My 89 Gt (stock 5.0 with mild AOD and 3.73's) is having some serious issues. It runs strong and without any hesitation/stumbling. After it gets warmed up, and driven a bit (30-40 miles), it starts dying! It won't idle at all, and if you can get it to stay running, it has NO power, and its backfiring/popping in the exhaust... Its left me stranded about 3 times in the past few days... what could be causing this? I've done a complete tune-up within the last 100 miles... plugs, wires, distrib cap, rotor..... The few things I've thought it could be are: The Throttle position sensor, fuel pump, fuel filter, clogged cats, egr valve?? Am I missing anything...... Will a computer pull a code even when its not acting up?? This is my daily driver, and I need it fixed fast!

 

[Daggar]

Try swapping the module attatched to the distributor. That was the problem I had. I'd swapped all the stuff you talked about before I discovered it.

 

[Daggar]

If that doesn't work start spraying around with Engine starter (ether) and see if you can't track down a vac leak. From your description though, I think the module is your problem.

 

[DRFT_STNG]

i'd look at your exhaust.. we just hit this in auto mechanics..he said it will run for a while then die casue theres notwere for there air to do and it compresses so much that kills there engine.. and it seeps out over a few hours letting it run again.. so try that

 

[Daggar]

Yeah... maybe someone stuffed a bananna in your tail pipe. LOL

 

[hyperformance]

what is this module called? i will pick one up at advanced.... and how much?

 

[Daggar]

Ignition module... they're cheap.

 

[hyperformance]

are there anymore ideas???

 

[JB66]

TFI - Thin Film Ignition Module. About $15

 

[88hatchblack]

sounds like classic TFI, i had to replace my stock one

 

[donkey_punch]

when i had that problem it was my distributor that went bad. but before i found that out i had changed everything else that has to do with the ignition.

 

[hyperformance]

i'm definately goin to change the module.... we'll see how that goes......THANKS!! are there any other possibilities? could it be fuel related.... when it acts up, if i go a steady 40-50mph, it does good.. but the second i give it just a little more gas, it starts backfiring and missing...it will handle steady speed, but NO accelaration at all... even if floored.... and it won't idle either :-(

 

[modulistic]

Thats definetly an ignition problem.