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Flavors of Fuel Pumps, 1993-1995 940s 900

9445444 is the NA fuel pump for B230FD w/Bosch main in-tank pump
9438756 is the turbo pump for B230FT w/Bosch main in-tank pump

I checked my notes and the turbo pump is higher flow.
(the IPD listing is incorrect and I can see a Volvo fitment listed elsewhere they may have used where the fitment is listed for both, but the description correctly says for turbo only).

I'm going over some old notes trying to sort out the various tanks and fuel pickup assemblies for the 940s. Turns out much of those notes made it into the FAQ here about the various tanks, senders and pumps:
https://www.brickboard.com/FAQ/700-900/FuelSystem.htm#FuelPumpandSenderReplacement

Checking a bit further into this, it seems that troublesome fuel pickup assembly (also called the fuel feed unit and/or sender unit) with the float contacts that wear is p/n 9412950 with fitment specific to the '95 940 turbos. You have to be careful with p/n's for this unit as some include the fuel pump.

I'm having problems finding the p/n for the B230FD NA sender unit. My visual recollection is that it was the same as the turbo in all regards other than the pump mounting bracket. One of the differences between the senders for the later large tanks compared to the earlier 940 tanks is that they support the warning light in the dash gauge when the coil resistance becomes great and indicates the tank is getting empty.

If your daughter's 940 is NA and has fuel gauge issues then if it's not that troublesome float contact (presuming it's a different design from the turbo one I bust open) then you need to think about checking for damage at the tank wiring connector and then start thinking about poor grounds, such as at the tank and especially in the instrument cluster. The pump itself should of course not affect the gauge. Pumps can fail in a couple of ways, but mostly they may simply go dead and no longer run at (cold) startup or else can wear out, overheat and start seizing up under extended use, especially at full fuel load.
--
Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now






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New Flavors of Fuel Pumps, 1993-1995 940s [900]
posted by  jd620  on Mon Dec 11 15:17 CST 2023 >


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