Dies when hot
Thread Starter
|
Junior User
Joined: Feb 2006
Posts: 67
Likes: 0
Dies when hot
1978 351m.
My truck that I recently got going after about a year of sitting died the other day after traveling a about 5 miles. I had driven it about 60-70 miles since getting it going. I was going about 50mph and it started to die. Got it off the road just in time to completely shut off. It would start up and go a little way after cooling off a few minutes. Temp read normal the whole time. Limped to parts store about a mile at a time. Changed fuel filter in the parking lot. It made it about 2 miles before dying at the bottom of my road. I parked it in the neighbors yard for about an hour. Went back and it ran enough to get it home. Took out ICM and had it tested at two places. Both said it was good. I started it today and just let it idle, thinking that if it's fuel supply it should idle continuously, but if it is related to heat, it would get warm and cut out. Well, It idled about 15-20 min and cut out. ICM and coil are too hot to touch for more than just a tap. I'm not sure if they normally get that hot or not.
Any suggestions for next step?
My truck that I recently got going after about a year of sitting died the other day after traveling a about 5 miles. I had driven it about 60-70 miles since getting it going. I was going about 50mph and it started to die. Got it off the road just in time to completely shut off. It would start up and go a little way after cooling off a few minutes. Temp read normal the whole time. Limped to parts store about a mile at a time. Changed fuel filter in the parking lot. It made it about 2 miles before dying at the bottom of my road. I parked it in the neighbors yard for about an hour. Went back and it ran enough to get it home. Took out ICM and had it tested at two places. Both said it was good. I started it today and just let it idle, thinking that if it's fuel supply it should idle continuously, but if it is related to heat, it would get warm and cut out. Well, It idled about 15-20 min and cut out. ICM and coil are too hot to touch for more than just a tap. I'm not sure if they normally get that hot or not.
Any suggestions for next step?
Postmaster
Joined: Nov 2011
Posts: 2,553
Likes: 10
I had the same problem and it turned out to fuel supply related.
The ancient short sections of rubber hose in the tank to fuel pump line were soft when wet with gas. If the truck sat for a week or two and the fuel drained out they were hard as a rock and when the fuel flowed they got soft like cellophane. Alcohol and old fuel line material do not get along. Suction from the pump pulled them closed after driving a bit. When it died, they would open a little... just enough for a re-start then close again. Took a while to figure it out... .
Another possibility is heavy crud in the fuel tank. When running, it gets pulled onto the pickup screen and stops the flow. When stopped some falls off to allow a re-start.
The ancient short sections of rubber hose in the tank to fuel pump line were soft when wet with gas. If the truck sat for a week or two and the fuel drained out they were hard as a rock and when the fuel flowed they got soft like cellophane. Alcohol and old fuel line material do not get along. Suction from the pump pulled them closed after driving a bit. When it died, they would open a little... just enough for a re-start then close again. Took a while to figure it out... .
Another possibility is heavy crud in the fuel tank. When running, it gets pulled onto the pickup screen and stops the flow. When stopped some falls off to allow a re-start.
Thread
Thread Starter
Forum
Replies
Last Post
ssj7kids
1948 - 1956 F1, F100 & Larger F-Series Trucks
11
Sep 2, 2008 11:09 AM
Freightrain
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
12
Apr 19, 2004 06:24 PM
