I'm working on my 92 F-150. It's the 5.8/E4OD and a 4x4. Last summer, I was doing some towing on a really hot day (hottest day of the year - 102F). The load wasn't bad - 3500 lbs trailer and all. The truck started bucking and hesitating really bad. It acted like it was losing fuel. I could change to the other tank and it would go away for a bit. After a little while, the truck would die and wouldn't start back up. If I left it for an hour or so it would start up and go a little farther. It never happened again after that day. The only code was for the torque converter slipping (which was really odd).

The day that it happened, I changed the fuel filter with no help. I'm thinking bad fuel pumps overheating the fuel. What do you guys think? I'm doing a rebuild on the engine (blown head gasket) and tranny right now, and I'd like to figure that problem out at the same time. So far during the rebuild, I haven't found anything that would cause it. I'm changing all the sensors, fuel regulator, etc. so I may catch it there. I'd appreciate any ideas you guys may have. Thanks.

Danny

 

may be the TFI module thats mounted on the Distributor. when they get to hot they will act just like that.

 

are you doing any motor upgrades? compcam has a computer friendly one 35-255-5 help towing an give ya a little umph. Might also think about headers and a nice new exhaust.

 

Hadn't thought about the TPI. Any idea how I can verify it's the problem? I bet the stupid thing is expensive...

Yeah, it's getting the cam you mentioned and headers. Any idea how much torque/hp that cam adds? I'll probably add a new throttle body and an electric fan in a few months. I may do a new exhaust then too. It's got a decent one now, but I'd like a true dual with x-pipe. I haven't found a bolt-in that I like and I'm being lazy right now and don't want to build it. I make break down in the next week and spring for it, but I don't know.....

Thanks,

Danny