1990 Econoline E250 Stalls on Hot Days. About an hour later starts up again
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1990 Econoline E250 Stalls on Hot Days. About an hour later starts up again
Hi I have a 1990 E250 Econoline When the weather gets in the high 80's or 90's the van sputters and stops dead. The fuel seems choked off. About an hour later it starts right up. I carried a can of starter fluid with me to see whether it was fuel or electrical. When i gave it a shot of starter fluid it kicked over for a second. I figured no fuel. I dropped and drained gas tank and replaced fuel pump in tank and outer booster fuel pump. Still on hot days stalls. Definately no fuel getting there. I'm thinking electrical or electrical providing power to pump. Looking for feedback Fuel pump relay? Module in distributor? Costly to keep guessing part by part. Thanks for any help
Senior Member
Joined: Jun 2010
Posts: 16,567
Gentlemen, I may have a suggestion that might help you both.
Looking at the diagnostic plug,
you should see 4 slots.
Place the plug so that the slots look like upside down T's on each end.
It will look like a letter H with the 4 slots in the middle.
The right hand most slot when grounded with the key on will close the fuel pump relay and if everything is OK the fuel pump should run. Don't forget this uses the fuel pump relay.
If the engine quits and you ground this terminal with the key on you should hear the fuel pump run and if there is a problem with the pump the vehicle won't start or run.
If you don't hear the pump run then you have a problem supplying power to the pump or the pump just won't run anymore.
The EEC relay supplies power for the computer and fuel pump relay. It's always good to have a spare relay available. The EEC relay and the fuel pump relay are the same part #. and are inter changeable. By jumping the fuel pump with the suggested ground to the plug you also by-pass the computer which provides the ground for the fuel pump relay which could also be the problem.
It's always a good investment to invest in a fuel pressure gauge, then you will probably never need it !!
Good idea to know where the inertia switch is (upper right hand kick panel) and trip it and reset it once in a while.
Looking at the diagnostic plug,
you should see 4 slots.
Place the plug so that the slots look like upside down T's on each end.
It will look like a letter H with the 4 slots in the middle.
The right hand most slot when grounded with the key on will close the fuel pump relay and if everything is OK the fuel pump should run. Don't forget this uses the fuel pump relay.
If the engine quits and you ground this terminal with the key on you should hear the fuel pump run and if there is a problem with the pump the vehicle won't start or run.
If you don't hear the pump run then you have a problem supplying power to the pump or the pump just won't run anymore.
The EEC relay supplies power for the computer and fuel pump relay. It's always good to have a spare relay available. The EEC relay and the fuel pump relay are the same part #. and are inter changeable. By jumping the fuel pump with the suggested ground to the plug you also by-pass the computer which provides the ground for the fuel pump relay which could also be the problem.
It's always a good investment to invest in a fuel pressure gauge, then you will probably never need it !!
Good idea to know where the inertia switch is (upper right hand kick panel) and trip it and reset it once in a while.
Last edited by hanky; Jul 27, 2012 at 08:35 PM.
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OraDBAforPsoft
Ford Econoline E Series
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Oct 16, 2013 06:37 PM
