1998 Volvo v70 xc - awd fuel pump issue?

[holler1]

reggie,
If you have electric power (voltage) at the relay pin and the pump itself, you should be able to hear the pump running. If it were me, I would want to test the pump directly by jumping from a battery lead to the pump (very briefly, like a few seconds) with the other pump wire grounded. I suggest waiting for others to reply who may be more familiar with the pumps, but personally I don't think a quick test would hurt it. I would not put it in water. I don't understand your last question if you do have power at the pump.

[abscate]

You can run it dry, briefly, 10s of seconds, with no worries. Don't put water through it. Don't run gas through it either, though...thats Youtube-able

[precopster]

A serlies of quick tests may help:

1) run a temporary ground wire from anywhere from chassis to the pump and see if it starts.

2) run a temporary power (12V+) wire from the battery to the pump (fused is preferable) however splice it in around 12 inches prior to the pump for safety.

You want to spend as little time as possible on the above tests soake the wiring asbcourse or rudimentary as possible because you may be dealing with a faulty new pump and you'll have bigger fish to fry if this is the case.

Some of the cheapest meters have piercing test leads (very sharp points) which are great for testing for breaks.

[sk55]

hi guys,

just replaced my pump, i wanted to add some tips to the thread.
i cut the top part of the panel when doing the pump, in hindsight it would be better to cut the bottom panel because the seat pulls the panel down when attached.
i ended up tack welding the panel back and worked great. if you used fastners, i think aluminum or zinc plated bolts would be better. Inititally before welding i tried stainless steel bolts, but upon further research the bolts would have caused some galvanic corrision to the panels.

[Ozark Lee]

i cut the top part of the panel when doing the pump, in hindsight it would be better to cut the bottom panel because the seat pulls the panel down when attached.

On the two that I have replaced I did cut the bottom rather than the top for that precise reason.

...Lee

[rhd]

I just did the same job. The cutout makes it much easier than dropping the rear end and the tank.
My question is: the fuel level sending unit has two white wires. Does it matter which goes where? I just guessed which went to which, and the gauge appears to read correctly. Would anything go wrong if the wires were reversed?
The fuel pump wires are red and black, so there's no guesswork there.

[Oitsujosh]

I just did this on my 98 xc70 and this thread was infinitely helpful. I did the cut out method for mine as well and I replaced the whole unit rather that just do the pump. The one thing I did different than I've seen here, was actually run the new harness through the corner where I made the cutout through a grommet. Then through the wire loom on that side up to the connectors. I have pics I'm going to try and post. Thanks for the awesome thread everyone!

[configsys]

I have a '00 V70R and I believe the fuel pump is bad but I'll probably just have someone drop the tank. However to save money I see there is a ProParts Sweden model that is $109 compared to the OEM $370. Does anyone have experience using this pump? Also, how do you check the ejector pump and should I replace that as well while we have the tank off?

[BriCourbat]

The fuel pump was replaced on this vehicle two years ago so the access panel is already cut. This car runs for about 10 seconds and stalls. I'm sure this could be multiple different things but wondering if anyone changed their fuel pump and still had the stalling issue. Any help is greatly appreciated.

Best,
Brian

[alpha318]

I purchased a pump, from highflow fuel systems (http://highflowfuel.com) though ebay last year, brand new 1 year warranty, it was about $80 with shipping. Highflow part number HFFS-340, it wasn't an exact match (shorter by about 1/2") but I needed a running car and long story short, it runs out of gas with around 2 gallons in the tank. I spoke with highflow on the phone and they sent me a replacement under warrenty. The replacement is basically identical in size and shape to the original walbro GRJ 235 and actually for a Dodge Neon SRT (highflow part number HFFS 377H).

Quick question, what is the purpose of using this style of pump and not an OE one, price aside? Is there a distinct advantage to this kind of fuel pump?