1985 SS Won't Start, Engine Shut Off While Driving

I was riding my 1985 Monte Carlo SS down I-20 and the engine abruptly shut-off. The radio and all of the lights were still operating. I pulled over to the service lane and waited an hour for a tow truck. While waiting, I was constantly checking to see if the car would start. After an hour, the car started again and I went on my way. I left the car parked for about 5 hours and when I went to start it, the car started right up. After making it about a mile down the road, the engine shut-off again in the turning lane of a busy intersection. I wouldn't start again after that.

I had the car towed 30 miles to my home and left it sitting. I just changed the alternator, spark plugs, spark plug wires and battery, the car still won't start. I used all high-end parts, no cheap stuff. The battery meter is reading low, even with the new battery.

The has an aftermarket UNGO alarm system in it, which is "spidered" into the ignition system. This prohibits power to everything except the lights if the key isn't in the ignition.

Has anybody experienced this problem? Does anyone know how to remove the UNGO alarm system? All advice and suggestions are welcome.

Thanks.

I was riding my 1985 Monte Carlo SS down I-20 and the engine abruptly shut-off. The radio and all of the lights were still operating. I pulled over to the service lane and waited an hour for a tow truck. While waiting, I was constantly checking to see if the car would start. After an hour, the car started again and I went on my way. I left the car parked for about 5 hours and when I went to start it, the car started right up. After making it about a mile down the road, the engine shut-off again in the turning lane of a busy intersection. I wouldn't start again after that.

I had the car towed 30 miles to my home and left it sitting. I just changed the alternator, spark plugs, spark plug wires and battery, the car still won't start. I used all high-end parts, no cheap stuff. The battery meter is reading low, even with the new battery.

The has an aftermarket UNGO alarm system in it, which is "spidered" into the ignition system. This prohibits power to everything except the lights if the key isn't in the ignition.

Has anybody experienced this problem? Does anyone know how to remove the UNGO alarm system? All advice and suggestions are welcome.

Thanks.

bring the vehicle to an alarm shop and have the completely remove the alarm. that is step one.

you can check the fuseable links in the engine wiring compartment. when these go you will loose power intermittently at first.

fuse links corrode.

changed too many parts that have not much to do to with your problem .

changing parts with new parts you can actually create more problems if these parts are defective. in todays world this is the norm !


one item that is a possibility is the ICM . this is inside the distributor at the base. it has 2 connectors to it. remove and have it tested. when installing clean the heat sink mounting surface and apply thermal compound.

auto zone stores have a wells module tester call for availability.