My '85 has run perfectly for 3 or 4 days now, and my problem just resurfaced, again. On my way home from work tonight, the engine stumbled while I was taking a curve (nothing aggressive at all) then runs fine for another minute or two, but then just dies. While I'm still coasting, dropped it in neutral and it fired right back up, runs a few seconds and dies again. I coasted for about 1/4 mile before it would start again. Finally started and ran for a minute and died again. Started right back up in neutral but this time I floored it, peeled tires, and hauled *** home (85 in a 45, glad no cops were out!) with no further problem.

Since this problem started on Labor Day weekend, I have had 3 different garages try to troubleshoot it, no codes, and no luck. New fuel pump, fuel filter, HEI module, MAF, distributor cap & rotor- still no luck. And there the car sat in my garage since September. Last week, I decided to fix it and found low fuel pressure that wouldn't hold, so I put in a new AFPR, diaphram, and 24# injectors. The car runs better than ever, runs cooler, and idles much smoother (still not quite perfect). I have good fuel pressure that still doesn't hold- goes up to 49 or 50 with pump running, then drops rapidly to zero after the pump stops. Pressure holds steady at 43 with the engine running. Cold start injector seems to be the culprit, resistence was only 5 ohms, and I read somewhere that it should be between 20-200. Crimping the fuel feed and return lines make no difference in the pressure holding.

What could possibly be making this thing just die when driving? There is no correlation to cruising slow down the road, idling in my garage, or driving the **** out of it, it randomly dies in any situation.

 

I had a Tarus that did that, it would die randomly, some days it would make it 60 miles, some days it wouldn't start. Something was wrong with the ignition system. Sorry I don't have any more info...