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Fuel Pump question

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
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Cpmitc4
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Fuel Pump question

Post by Cpmitc4 » Sat May 11, 2019 10:43 am

Disclaimer, Im not a mechanic, just slightly mechanically inclined and have done a few simple jobs in my years. Trying to help a buddy diagnose his 2004 V70 wagon. It died while driving on the interstate, cranks fine, doesnt turn over. Checked the fuel pump relay and fuses, they seem fine. There is no pressure at the fuel rail shrader valve, and the car cranks with starter fluid sprayed in the breather. All signs point to a faulty fuel pump, IMHO.

Now come my questions, i got to the fuel pump access port and it looks nothing like any guide or tutorial I can find online. I was expecting to see fuel send and return lines, as well as electrical connections into the tank, however, there seems to be no connections going in through the fuel pump access port. I checked both sides, and theres nothing there.

1) it appears the send and returns enter the side of the tank through a bulkhead. If I pull the pump through the access port, will i be able to get to those lines or do I have to drop the tank?

2) Is there anything else I should check before ordering a pump.

Thanks ahead of time gents
20190511_123022.jpg



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Re: Fuel Pump question

Post by oragex » Sat May 11, 2019 12:28 pm

You have the metal tank. I'd say, leave alone for now the fuel pump, these last forever (unlike on other cars). Main culprits are the PEM and FPS (google)

.


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Re: Fuel Pump question

Post by MDK » Sat May 11, 2019 6:18 pm

MDK here..a metal fuel tank on an 2004 V70? Hmm.I'd go with what Oragex is saying first....if that checks out.. Volvo's recommend replacing fuel pump @ 200,000 miles for scheduled maintenance. What's your mileage? The rule is... whatever is holding it... unbolt it. ... really.... rolling on



Cpmitc4
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Re: Fuel Pump question

Post by Cpmitc4 » Sun May 12, 2019 9:24 am

Ok cool, I ordered a FPS and will try that first since its such an easy fix. Is there anyway to confirm a failing PEM or should I just replace that part as well?



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Re: Fuel Pump question

Post by abscate » Sun May 12, 2019 9:59 am

Monitor fuel pressure at the rail and see it is steady or fluctuating.

The PEM usually get a corrosion inside it as a failure mode, so you can open it up and check.

New one is expensive, like >$300


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Re: Fuel Pump question

Post by Cpmitc4 » Sun May 12, 2019 10:14 am

Ive got no fuel at all at the rail unfortunately



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Re: Fuel Pump question

Post by oragex » Sun May 12, 2019 10:46 am

Usually the PEM will show corrosion on the metal plate. This plate then also get corroded inside and short cuts the circuit board. Used one i under $60 off Ebay - look up for one with not corrosion. They are all the same, just different brackets, etc


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Re: Fuel Pump question

Post by Cpmitc4 » Thu May 16, 2019 8:22 am

Replaced the FPS, no change. Awaiting the PEM from ebay, Ill swap it out as soon as it arrives.



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Re: Fuel Pump question

Post by 850 LPT » Thu May 16, 2019 10:53 am

MDK wrote:
Sat May 11, 2019 6:18 pm
MDK here..a metal fuel tank on an 2004 V70? Hmm
Yes, to my knowledge the PZEV cars have a stainless steel tank.


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Cpmitc4
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Re: Fuel Pump question

Post by Cpmitc4 » Mon May 20, 2019 2:28 pm

It was the PEM indeed. Got a used one off Ebay for $55 usd. Slapped it in and the car cranked first time. Thanks to Oragex. Glad I didnt have to get covered in gasoline.



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