2004 S60 making weird on and off noise from fuel pump

nucci480 · Post by **nucci480** » 08 Apr 2020, 18:59

Weird on and off noise coming from the rear end of 2004 Volvo s60 non-turbo. 171k miles, replaced fuel rail FPS back in October. Any help would be appreciated.

Post by **darrylrobert** » 08 Apr 2020, 19:39

Have you changed the fuel filter?..could be a blockage,you can also check the pump relay however i really think the problem is the pump or a kinked pipe in the tank.

to remove the pump is a "fun job", the less amount of fuel in the tank the better. Buy the removal tool online, i tried making my own but it failed. Remove the rear seats completely, it makes for lots of room and less swearing. Clean the area and lay down rags/sheets to protect carpet etc there will be fuel spillage especially from the bucket the pump sits in. You can pick up a used pump like i did, or buy new just get genuine Volvo (Bosch)

nucci480 · Post by **nucci480** » 08 Apr 2020, 20:06

I haven't replaced the fuel filter, it doesn't have the external filter. I was wondering if it was a faulty PCM.

Post by **darrylrobert** » 09 Apr 2020, 00:23

Sorry not familar with those vehicles but it looks like a good place to start checking fairly easy to remove/check voltages etc lots of videos on youtube reporting issues with those things.

When i removed my tank pump i found some rubbish in there from things being dropped it the tank.

nucci480 · Post by **nucci480** » 16 Apr 2020, 11:47

I went ahead and replaced the fuel pem looked like it was pretty worn out. Noise is gone for now.

Post by **oragex** » 16 Apr 2020, 13:24

Yep nice found. It was shorting inside so forcing the pump to spin for no reason - sometimes it rather cuts it