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Fuel pump whine?

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Old Sep 17th, 2018, 10:11   #11
AlexO
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Here's an annoying addition but my pumps always whine. Both were replaced two years ago when they died together, both wired in and checked when they were put on the car (so they're definitely working) and both make a quiet but audible whine when they're running.

They might be broken or they might just be whiney pumps and yes, I'm sure they both work.
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Old Sep 17th, 2018, 12:50   #12
Jungle_Jim
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Quote:
Originally Posted by liamcafs View Post
I made a little tool to make removing the tank lock ring a whole lot easier. I'll post a picture or youre welcome to borrow it for the postage.
Thanks a lot for that offer Liam
I haven't diagnosed it yet, so I don't need the tool for the minute, but it'd be good to see an image of it on this thread.

Cheers
John
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Old Sep 18th, 2018, 01:12   #13
speedyG50
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Originally Posted by Antz View Post

The cheaper and more modern option that I have done loads of times is to remove the external pump completely and pipe between it then buy a Walbro 255 from Conceptua Tuning and fit that in the tank in place of the small in tank pump.....unfortunately you'll still need a new sender unit, seal and lock ring.

This is more than man enough to flow a 240 as they are designed for cars up to 400bhp.
Antz ... but would that be appropriate for a K-jet .... ie direct from tank, to filter and engine (thus bypassing the main pump and accumulator). Previous posters suggest k-jets need the accumulator.... it's an 89 wagon, non turbo
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Old Sep 18th, 2018, 10:47   #14
Antz
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Originally Posted by speedyG50 View Post
Antz ... but would that be appropriate for a K-jet .... ie direct from tank, to filter and engine (thus bypassing the main pump and accumulator). Previous posters suggest k-jets need the accumulator.... it's an 89 wagon, non turbo
No idea to be honest. I've only done this on LH injection 240's and ones with a complete standalone engine management. Not done it on K-Jet but in the end a pump is a pump. What it doesn't use it'll return to the tank.
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Old Sep 18th, 2018, 23:24   #15
speedyG50
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Cheers for the reply .... I'll persevere with my accumulator.
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Old Sep 19th, 2018, 21:06   #16
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It is the pre-pump in the tank that has died. Put`s extra strain on the main pump especially when the fuel level get`s low. Fairly easy fix.
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Old Sep 19th, 2018, 21:08   #17
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Originally Posted by morsing View Post
Don't think it's a pump problem, it's just sucking in air somewhere.
Completely wrong
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Old Mar 5th, 2019, 05:29   #18
RichardAu
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Exclamation Same Problem on my S60

I have just developed the same problem on my S60, which is 3 years old and has done just 24,000kms. The whine, which comes and goes, is very loud when outside the car and is only heard when the tank is below half full and the engine is running. When I open the fuel tank cap, there is heavy gas escape and I can hear the fuel inside bubbling vigorously. Problem seems worse in hot weather. My dealer says he hasn't heard of the issue before and seemed surprised when I told him there is discussion on the Volvo Forum about it. Just a bit alarmed that it might explode.
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