1991 grand prix stall out after 15min of running idon,t if it running off battery?

Question

i itry to start it ,it will turn over but won,t start i think there is a short some where

Answer 1

GM's have a tendency to blow ignition modules.
The little halfmoon shaped flat thing under the dist. cap.

Answer 2

Sounds like it could be your alternator. The alternator (when functioning properly) supplies your car with electrical current and recharges the battery. If the alternator is not working, the car would then be running soley off the battery and would die one the battery was dead. The time frame would vary depending on the condition of the battery and how many accessories you have running (headlights, stereo, etc).

Get your car over to an AutoZone and have them run a free diagnostic. They can tell you if it's the alternator, battery, or other problem in a matter of minutes, and again, its a FREE service.

Good Luck

Answer 3

It could be a fuel problem if it wont start any more and when it did it would shut off. Check the fuel pump or just check for fuel pressure. If you have pressure check the ignition coil, wires, plugs. You have to check everything that could cause it to stall out or just not run but will turn over.

Answer 4

Those cars have coil packs.But if it turns over and it does not
start you need to check for spark or fuel.If you don't have either
one,your car will not run.They are known for coil pack modules
to go bad...or fuel pump.

Answer 5

i own a repair shop,and you need to have it checked there's too many things that it could be for me to try and tell you ,have it checked out by a local mechanic and see what they say about it,,it may have a serious electrical problem,that needs to be repaired right away,good luck,i hope this help.s