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Old 02-05-2020, 09:34 AM   #1
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Upgraded lift pump

I have a 2000 Blue Bird with the 5.9 24v and my lift pump is on the way out. Does anyone know of or purchased a better than stock lift pump for their bus?

I've contacted FASS directly and they don't have anything based on my ESN or even a recommendation.

Even with only 64k on it, it has a remanufactures VP pump on it, so I'm assuming it's gone out before and trashed it. I obviously don't want to do that again.

Thanks
Richard

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Old 02-05-2020, 10:33 AM   #2
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Year: 1984
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Engine: 6.9 International
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You'll have to do something similar to stock, other wise the check engine light will come on. I believe the ecm monitors pump amperage and will throw a code if it's out of spec.

Various manufacturers have an updated version. The original pump was a vane pump that wasn't really designed to pull fuel long distances like they had it installed. The update is an inline pump that is a bolt in place option.

Look up delphi # hfp953 for the updated version. Carter and airtex also make a version of this as well.

As far as fass or other aftermarket companies go, I've never used them in commercial service, so I can't tell you how well they'd work.

Be sure to replace the fuel filter and water seperator when replacing the fuel pump

The original vane style pump is still available. If you're feeling ambitious, I know guys that have made a harness extension and relocated that pump back near the water seperator with good results.
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Old 02-05-2020, 11:50 AM   #3
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Yes I had an intermittent ses and just found out this weekend it is from low fuel pressure. The filters have been changed in the last 1000 miles.

I will look into those other pumps. I have no problem relocating it if it helps but they fail in the pick ups with a much shorter pull too. So not sure that'll be worth it.
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Old 02-09-2020, 02:33 AM   #4
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This is a long thread but it might have some useful information for you. There are some fass pump models listed in here that would probably work for you.

http://www.irv2.com/forums/showthread.php?t=289659
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Old 03-08-2021, 10:20 AM   #5
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As a follow up here.

I was pm'd about the airtex pump upgrade, but I never did a back to back test or comparison of the carter vs airtex until this past saturday.

For the record, most carter pumps would struggle to get 10 or so psi at idle. I had a dodge truck come in this past week that would prime up to 7, and then once the truck was started, it fell to 1 psi at idle. Typically, we see these lift pumps outright fail and pump nothing. So as a test, I installed a new fuel filter and nothing changed. I then removed and replaced the carter pump with the airtex unit, and had an instant 14 psi at idle. I can say with almost 100% certainty, no carter pump has ever achieved that. So the airtex pump is definitely an upgrade over stock.

and as an FYI, I've yet to replace any of the airtex units either. so longevity seems to be there too.
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Old 04-28-2021, 09:17 AM   #6
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Year: 2002
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I have a 2002 Bluebird with the 24v Cummings. The FASS DRP02 pump is a direct bolt on if you have the lift pump on the side of the block (not in the tank). I did this replacement and it works fine for me. It's an upgrade to 90 GPM. Word to the wise, if the lift pump is ON the way out, do your checks on the VP44. The circuit board could already be fried.
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