I have an 87' mustang GT and it wont stay running. I can start the car just fine, but it dies immediately. You cant even give the throttle gas before it dies. I just replaced the battery and the terminals are fine on it. I also know its not the starter, since it turns over. Its not the alternator. If anyone has an idea I would greatly appreciate any advice given. Thanks in advance!!!!

 

it can be alot of things.. its not carburated right?? im not familiar with foxes but im sure that fuel injected.

check the spark plugs and spark wires..

or maybe the timing is off..

hope it helps

 

maybe timing, i had the same problem