Lift pump pass though? - Diesel Bombers



24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps
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Old 03-07-2017, 09:23 PM
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Default Lift pump pass though?

So I have 2002 in tank lift pump and was wondering what the little H connector is for that ties the return and pressure lines?

Is there a way to make this lift pump a pass through in case the electric pump fails?
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Old 03-14-2017, 06:01 AM
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To run anyother lift pump you will need a draw straw or a sump. Trying to pull through a dead or dieing pump will cause a restriction in pressure.
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Old 03-15-2017, 06:23 PM
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Do you know what that "H" connector between the feed and return is for?
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Old 03-16-2017, 05:28 AM
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I do not..
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Old 03-16-2017, 07:17 PM
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Looks like its a FPR that pops around 5-9psi.
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Old 03-17-2017, 05:35 AM
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I wouldn't run it that low. Bosch specs it for a minimum of 10 psi. Personally I wouldn't do less than 14 psi. I wouldn't run it. I'd park it till you get the fuel pressure sorted.
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Old 03-17-2017, 08:09 PM
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I am running a TDi ALH in my 2001 dakota. It has an 11mm VE pump and originally ran on a straw. I added a lift pump cause its not stock.
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