help: wont stay running.

[2.8broncoII]

well i changed the fuel filter and disconnected the pos. battery cable for awhile and that didnt help.

 

[joeinblueout4u]

My '95 B4000 is doing the same thing. I'm betting on the fuel pump. I'm on my way to work now to lift the bed and change the pump. I hate shotgunning parts, but I don't have acess to a scanner or FP guage.

-Joe

 

[betomonroy]

My guess is that You have either a fuel pressure problem or a Security System problem. If your other key is a "chip" "PATS" key and is not making the engine run than it is a security system malfunction wich can cause the fuel pump to stop. But what makes it hard to diagnose is the lack of a fuel pressure gauge to measure the fuel presure. Get a test light and check the fuel pump relay. If it turns off while the engine is running the problem is electrical/security. If it stays on is the fuel pump. Good luck.