Re-upping previous post- XC90 No start

ndiggy · Post by **ndiggy** » 27 Sep 2011, 09:46

I'm having problems with the PEM on my 2005 S40 and I'm hoping to replace the part myself. Due to some other complications with the electronics in my car, the repair isn't going to be covered under the warrenty.

Powersct you said you had instructions on replacing the module? Would you be able to post the them?

powersct · Post by **powersct** » 27 Sep 2011, 10:05

Hmmm. This was awhile back now, but I will take a look for them. This was a wagon (XC90) and the module was in the front of the right wheel well well behind the liner. As I recall, the fix was to move it inside the car and re-route the wiring. The owner decided not to go that route and I just replaced it- plug and play...

volvodoc · Post by **volvodoc** » 28 Sep 2011, 08:52

fuel pump module is located in r/r inner fender well common problem they get water in them and short be advised if this is your problem there is a relocation kit to move them inside also it is common to blow the fuse under the hood when this happens

powersct · Post by **powersct** » 28 Sep 2011, 08:59

Just another point on this- the old module had a small hole/opening where you could see part of a copper connector on the front- the new replacement was fully sealed. Presumably this is where water would enter the old one. The copper was corroded as well.

volvodoc · Post by **volvodoc** » 28 Sep 2011, 11:31

can you explain the pem should be a sealed unit are you sure your looking at the right part

powersct · Post by **powersct** » 28 Sep 2011, 11:54

I am talking about the module as you describe in the RR wheel well (black box approx 4x6 with the connector on the bottom). Going from memory here on the XC I was working on, but I clearly remember the new unit not having the opening which was small but clearly there on the old one right above the connector on the front of it.

Post by **cn90** » 27 Jun 2014, 23:26

Old post but...

Is there anything one can do "preventively"?

1. Relocate it to inside the car?

2. Clean the connectors and somehow seal it tight?

PS: According to another DIY (see the excellent link below)...

Volvo PN 30742823 ($280) = Bosch 0 580 001 002 = Ford 4N5T-9C105-AG (cheaper than Volvo pricing)

http://volvoforums.com/forum/volvo-xc90 ... ial-71534/

Post by **cn90** » 06 Jul 2014, 16:47

Finally I have some time to remove the FPM for inspection.

1. RR wheel removed, car on jack stand/floor jack etc.

2. Remove 10-mm plastic nut and folded liner over (I used the RR door to jam it out of the way).

3. Some fine sand particles around connector but no corrosion. So after 9-10 years in Nebraska, not bad at all considering that this State uses mostly sand > salt in the winter.

4. I cleaned all sand particles, apply a tiny smear of grease to keep corrosion out, buttoned everything back together.

Photos for the records...

: XC90-FCU-01.JPG (96.21 KiB) Viewed 1827 times

: XC90-FCU-02.JPG (87.46 KiB) Viewed 1827 times

Stravlr · Post by **Stravlr** » 09 Jul 2014, 14:23

Wow Sneaky buggers hiding it there - thanks for the pictures!