04 V70 2.5T fuel pump issues

Rgreiner · Post by **Rgreiner** » 18 Jul 2019, 19:14

I have an 04 V70. It has a steel fuel tank so obviously it's an odd ball. I was in the drive thru at the Chic Fila and it just quit. Relay was clicking but no pump. I tried swapping relays that did nothing, then I replaced the fuel pump. Which took me a couple orders because of the steel tank thing. But it is a factory replacement pump from Volvo. Not a cheap piece!
Well it still doesn't work? Is there any other components between relay CMI12 under dash and the pump? I haven't found a proper diagram yet.. it doesn't help its 100deg outside working on it either. Any help would be much appreciated. Thanks

Post by **abscate** » 18 Jul 2019, 19:56

The P2 fuel delivery uses the central electronic modul (CEM) a pump electronic module. The Pump module Is the most likely failure,

Post by **oragex** » 19 Jul 2019, 04:01

As above, look for the PEM (google) $50 used off Ebay. No need to put back the small locking tab and screw

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MDK · Post by **MDK** » 19 Jul 2019, 15:08

I concur... PUMP ELECTRONIC MODULE.(I hate acronyms) btw. It good to have moderators like abscate, Oragex, Jimmy 57 and a handful of other people around... really know their stuff when it comes to the diagnostic side. MDK

Post by **cn90** » 19 Jul 2019, 16:20

You can find a used PEM at local junk yard for $15-$20.
Give it a try.

If not, then try ebay, about $45 for a used PEM.

Rgreiner · Post by **Rgreiner** » 19 Jul 2019, 22:58

Thanks for all your help. I pulled the module out today. It's pretty corroded. I'm gonna order another.

Post by **abscate** » 20 Jul 2019, 05:09

MDK wrote: ↑19 Jul 2019, 15:08 I concur... PUMP ELECTRONIC MODULE.(I hate acronyms) btw. It good to have moderators like abscate, Oragex, Jimmy 57 and a handful of other people around... really know their stuff when it comes to the diagnostic side. MDK

It’s an MVSBP* to not use AWOD**

*Matthews volvo site best practice

**acronyms without definition

WE can do a better job here of stopping this bad habit, which is tough on newer folks. I caught myself with one above but not the first one