efi gremlin

[travisneville]

i swapped a motor from a 86 f150 into my offroad bronco. my problem is that it will run for about a 1/2 mile then die. if i wait about 15 minutes it will start and run all day without an issue. ive checked for loose wires, bad grounds, etc. this has happened many times and its always the same thing, run for awhile, die, start and then run allday. any help would be appreciated. thanks

 

[Viperwolf1]

And the codes are?

 

[Steve83]

Are you using the '86 EEC & wiring? How is the fuel system arranged? What's the fuel pressure just before it stalls? Those early EFI engines had weak transistors in the EECs, crappy relays, crappy fuel systems, and crappy ignition module mounting.

Pics would help - the more, the better. Read this thread:
http://www.supermotors.net/forums/thid-5972-how-do-i-post-pictures-sounds-and-or-videos

 

[ransil]

Change the TFI module and or the hall sensor too, sometimes easier to change the whole distributor than mess with R&Ring the gear to replace the hall sensor, but my money is on the TFI module