E350-fuel pumps quit!!
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Joined: Mar 2003
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E350-fuel pumps quit!!
Im hoping someone can help me with this problem as I really need to get this started. I have a 86 E350 camper with a 460 engine and no fuel injection. It ran fine last fall, but I went to start it this spring and it won't fire. I pour gas in the carb and she fires but of course won't stay running. I can not hear either fuel pump running(dual tanks). If I put 12 volts to the hot wire of the fuel pump it should run, correct? There seems to be four wires running into each sending unit, does anyone know which one is the hot one. Can anybody give me some hints as to what to check as far as not getting any power to the fuel pumps. thanx for any help you can give me. wnk.
Fleet Owner
Joined: Aug 2005
Posts: 23,668
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From: Easton,Ks
Originally Posted by DBAPilotDad
Bill - Is your diagram above correct for an 83 E350 as well? (under a Tioga Class C rv)...
Here is one for an 83 E350 460 with El. Fuel pumps.
If you have a mechanical fuel pump then post back and I will see what I can come up with.
/
Junior User
Joined: Oct 2005
Posts: 61
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From: Arvada, CO
Thanks - with this a number of other diagrams you and others have posted, I think I'm on my way to fixing the beast. It's a single tank (aftermarket 30 gal) with external electric fuel pump (Holley Red) at the front of the tank feeding a mechanical pump, lifting to the carb (thru the vapor seperator)
Fleet Owner
Joined: Aug 2005
Posts: 23,668
Likes: 301
From: Easton,Ks
Originally Posted by DBAPilotDad
Thanks - with this a number of other diagrams you and others have posted, I think I'm on my way to fixing the beast. It's a single tank (aftermarket 30 gal) with external electric fuel pump (Holley Red) at the front of the tank feeding a mechanical pump, lifting to the carb (thru the vapor seperator)
I have the same 1982 RV cutaway on my class "C" with the 460 and a 1983 home on it.
I have replaced the front tank with a tank from a 1988 E150 with an electric fuel pump in the tank and put an electric fuel pump on the rail for the after tank that also supplies the fuel to the Generator Set.
I can run on just the mechanical pump or the mechanical pump and one or both electric fuel pumps.
Here is how I wired it.
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Junior User
Joined: Oct 2005
Posts: 61
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From: Arvada, CO
Great info (sorry to the OP for the thread hijack) ... I added the mechanical pump in trying to resolve an intermittent loss of power problem and seems to have resolved it (trouble free for 5 years) until recently.
I bought the RV from the original owner and it had an external electric pump. That one got real noisy soon after I bought it (10 years old then) and I replaced it with a Carter. I just recently replaced the Carter with a Holley Red I had laying around, when the problem cropped up again. This time, however, the problem was accompanied by the module fuse blowing - never did that before, and was a frustrating self-healing problem.
I bought the RV from the original owner and it had an external electric pump. That one got real noisy soon after I bought it (10 years old then) and I replaced it with a Carter. I just recently replaced the Carter with a Holley Red I had laying around, when the problem cropped up again. This time, however, the problem was accompanied by the module fuse blowing - never did that before, and was a frustrating self-healing problem.
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