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Topic: Engine (460) won't start or cuts out while running (Read 438 times) previous topic - next topic

Engine (460) won't start or cuts out while running

I'm having engine troubles that seem to be mystifying my local mechanics, so thought I'd reach out on here to see if anyone has suggestions.

I have a 1992 FE Ford 460. Yesterday, I drove it a short distance (about 10 miles) and shut it off, then tried to restart it about 20 minutes later and it wouldn't start. Turning over but not starting. It happened once before, about a month ago, similar situation: drove it about 6 miles, turned it off to refuel, then it wouldn't start up again. That time I had it towed to a mechanic, it sat overnight, and started fine in the morning. The mechanic tested the fuel pump and said it looked good, no problems there. (He had a theory about the temperature of the gasoline, but I think he just made up something to get me out of there.)

So this time I thought I would wait the night out and try again this morning. Still no luck. A mechanic came to check things out, and he was convinced it's the emergency shut-off ("rollover") switch or the fuel pump relay, but he couldn't find either of those things to check. After about 2 hours of looking (and testing other things), he was about to give up, when he tried cranking it one more time and it started. Shut it off, started again. Waited about 30-45 minutes, tried again, and it started again. So then I got ready to leave, and it shut off while idling in park. (Had been running for about 5 minutes.)

Can anyone tell me the location of rollover switch (if I have one) and fuel pump relay? Any other thoughts/ideas about what it might be?

Thanks!
-Moriah
Moriah Munsch
1992 Grand Villa 29' RB
Oshkosh Chassis, Ford 460
Build # 3975

Re: Engine (460) won't start or cuts out while running

Reply #2 –
The shutoff switch on my old Ford was up under the dash on the firewall/driver's side.
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: Engine (460) won't start or cuts out while running

Reply #3 –
Thanks for the info. I've narrowed it down to computer or inertia switch, but I still can't find the dang inertia switch for the life of me. Got the wiring diagram from Freightliner, and there's definitely an inertia switch on there, but I swear it must be invisible! It's really driving me crazy! Will probably have to tow the coach to a shop tomorrow.
Moriah Munsch
1992 Grand Villa 29' RB
Oshkosh Chassis, Ford 460
Build # 3975
 

Re: Engine (460) won't start or cuts out while running

Reply #4 –
The guy above found his buried in the dash .