Vehicle came into our shop because it would just up and die. It would always start right back up, but it would die anywhere, including driving 55 down a highway. The problem persisted for months, we changed things there were in obvious disrepair, which would help her run better, but never fixed the problem. She never threw a code. We ended up buying her so we could spend time to fix her, as much as was needed. Not long after that another F-150 came into the shop with the exact. same. problem. Oh boy here we go. But this one DID throw a code. Intake Air Temp Sensor. So after that we tried the one on our new problem child. Pulled the old one off & it was b-a-d. This was last week, so far she's run fine. It's been a little cooler but we've driven far enough I think she's fixed *knock on wood.

During hot weather the engine intermittently dies while driving. It will restart everytime by placing the shift selector in neutral and hitting the starter. If running with overdrive on, the engine will die at any speed. If running with overdrive off, the engine bucks and jerks but if it is given full or near full throttle it accelerates normally and the engine runs smoothly while accelerating every time.

It does not throw any codes while doing these tricks. I've tried selecting the alternate tank (front - rear) while the engine is trying to die and running rough. It makes no difference. I kept a record for several months to see if the problem was worse with the front or rear tank. There was no difference.

I bought this F150 new in 1993 and have maintained it well. It looks nearly new, doesn't burn or leak ol between changes and performs very well except for this engine problem. The problem started about 5 years ago and seems to be getting worse.

The problem is much worse during hot weather but the engine temperature indicator always stays on the low side of normal and it does not leak or use coolant.

On several occasions I've taken the F150 to the local Ford dealer, who I highly respect, and they have kept it for more than a week twice and have not been able to duplicate the problem. They did find a problem with and replaced the coil and ignition wires and an engine temperature sensor that all needed to be changed anyway but the problem continues. The dealer did not charge me for the diagnostic work because they were not able to find or fix anything.

I hope the beast will die and refuse to run someday so it can be caught in the act and fixed.

I would appreciate receiving any ideas on eliminating this problem.