What pressure does the LP pump run at

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What pressure does the LP pump run at
#1
So does anyone know this? Or anyone know when the ecu will cut in limp mode. Trying to work a few things out and cant find any data on it
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#2
the low fuel pressure is triggerd by the hp pump but the lift pump runs at 37psi i think
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#3
The lift pump is regulated to 1.25bar within the fuel filter housing.

The ECU has no clue over the low pressure circuit, however if the low pressure circuit starts starving/dropping pressure, the HP pump will be starved also, which means it'll fail to make pressure. As stock there is a maximum ±250bar deviation allowed before a fault code is set.
(16-05-2016, 10:45 AM)Toms306 Wrote: Oh I don't care about the stripped threads lol, that's easily solved by hammering the bolt in. Wink
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#4
Well ill have to see what pumps i can find that will make my life easier. Thanks for the info guys
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#5
what do you need to do? higher pressure lift? more flow? might be able to point you in a direction mate.
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#6
Just need to know what the standard ine runs ao i can measure it against another one i have


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#7
Iirc the pump itself runs at 3 bar, if you're testing it seperate from the fuel system. Otherwise as Ru says.
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#8
the pump will typically run at whatever pressure the regulator is set at, so if you need more pressure then change the regulator.
need a part number? http://public.servicebox.peugeot.com/ and http://service.citroen.com/ will sort you out.
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#9
Thanks for all the info guys. Ill test what i have and go from there
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#10
(20-03-2017, 05:01 PM)welshpug Wrote: the pump will typically run at whatever pressure the regulator is set at, so if you need more pressure then change the regulator.

This is a very valid point.  lol
306 HDi Deathtrap - 130bhp / 220lbft
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#11
I dont require more pressure. I just neesed to know stats for testing purposes. As usual the forum has deliverd some stuff for me to look into


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