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Old 03-01-2021, 09:16 AM   #1
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1989 e350 460 Efi stripped chassis fuel pump

Hello all. Iím new to the forums so forgive me if this question is in the wrong section. Iíve recently acquired a 1989 holiday rambler monitor gl class a Motorhome, base on a ford e350 stripped chassis, with a efi 460, aft 40 gal fuel tank. Iíve been having intermittent stalling and general poor performance that I have tracked to a failing in-tank fuel pump. I know that these year model ford chassis were prone to fuel pump issues Due to overheating. I know that ford redesigned the tank pumps I think around 95í/96í maybe? Iíve read that many Motorhome owners have experienced this issue and have replaced their tank pumps with the updated turbine style pump effectively solving the Problem. However, Iíve been to every parts store and ford dealer in town and no one can find the part number for the newer style pump and associated wiring harness. Iím hoping that someone in these forums could possibly provide the correct part number for the updated pump I need for my application. Any help with this matter will be greatly appreciated.
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Old 03-01-2021, 09:30 AM   #2
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We need to know what you have as you say some contradicting things.
You say it is a class "A" but you also say it is on a E350 chassis.
The two do not go together.
If it is a class "A" it is on a F53 or a JD chassis. Both had the 460 engine.
If it were a class "C" it would be on the E350 chassis.
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Old 03-01-2021, 09:31 AM   #3
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https://www.partsgeek.com/gbproducts...8aAlo8EALw_wcB
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Old 03-01-2021, 09:55 AM   #4
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Quote:
Originally Posted by subford View Post
We need to know what you have as you say some contradicting things.
You say it is a class "A" but you also say it is on a E350 chassis.
The two do not go together.
If it is a class "A" it is on a F53 or a JD chassis. Both had the 460 engine.
If it were a class "C" it would be on the E350 chassis.
Well to be honest I’m not 100% sure what it is. The owners Manual calls it a class A...however the chassis vin# shows it to be an E350 incomplete chassis. I know that it is not a partial cab...it has a full aluminum body with a driver door. However I think it is more a mini home?
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Old 03-01-2021, 10:02 AM   #5
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What is the VIN without the last 4 numbers?
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Old 03-01-2021, 10:16 AM   #6
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What is the VIN without the last 4 numbers?
VIN is 1FCKE33G9KHA6
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Old 03-01-2021, 11:49 AM   #7
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Looks like you have a class "C".
Do you have a photo of it?
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Old 03-01-2021, 12:22 PM   #8
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Appreciate the clarification subford.
Hereís a pic of it.
Click image for larger version

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Old 03-01-2021, 12:40 PM   #9
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Here's a thread with a bit of fuel pump info. Oriented more to F53 chassis but you might find something useful there.
https://www.irv2.com/forums/f23/rela...es-508562.html
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Old 03-01-2021, 01:16 PM   #10
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Here's a thread with a bit of fuel pump info. Oriented more to F53 chassis but you might find something useful there.
https://www.irv2.com/forums/f23/rela...es-508562.html
Pretty entertaining write up GypsyR...and sounds suspiciously similar to the problems Iím having with mine. I appreciate the info.
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Old 03-01-2021, 09:24 PM   #11
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Appreciate the clarification subford.
Here’s a pic of it.
It looks like a Class "A" but it is mounted on a E350 chassis.
You say it has a 40 Gal fuel tank like the 1989 Class "C" RVs had.
Does it have a fuel pump mounted on the frame like the 89 E350 Class "C" RVs had?
If so it takes a low pressure fuel pump in the tank and a high pressure fuel pump mounted on the drivers side frame.
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Old 03-01-2021, 09:34 PM   #12
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Would that be an E33 chassis? They were van based. They were used on some short class A's around 1990. Fleetwood Flair is one model that used them.
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Old 03-01-2021, 09:49 PM   #13
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Do you have a fuel pressure gauge to confirm it's the fuel pump.

I think I would be installing one before I went any farther. No sense in chasing your tail by just replacing parts.
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Old 03-01-2021, 10:18 PM   #14
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Quote:
Originally Posted by subford View Post
It looks like a Class "A" but it is mounted on a E350 chassis.
You say it has a 40 Gal fuel tank like the 1989 Class "C" RVs had.
Does it have a fuel pump mounted on the frame like the 89 E350 Class "C" RVs had?
If so it takes a low pressure fuel pump in the tank and a high pressure fuel pump mounted on the drivers side frame.
I appreciate you clarifying the class for me, it was a bit of a mystery. It does have an external frame mounted fuel pump on the driver side frame rail, which Iíve confirmed to be functioning properly, as well as 2 filters...an inline filter after the external pump and an element type before the external pump. Both of which have been recently replaced. The tank pump is intermittently shutting down, and causing a low fuel pressure event under engine load, I believe due to either heat or stress, or just age related failure. I have dropped the tank and removed the pump and by the condition of it, Iím surprised it would run at all. Iíve flushed a considerable amount of rust and gunk from the tank and am currently searching for a replacement pump.
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