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2002 XC70 Fuel pump retrofit with P80 pump

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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precopster
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2002 XC70 Fuel pump retrofit with P80 pump

Post by precopster »

I wanted to see how complex the P2 fuel assembly is after being quoted over $380 locally for a Bosch 30761743 which includes the sender and the pump as one unit. I didn't want to wait 10 days for a pump assembly from Tasca (just over $209USD which is not a bad deal at all) so I decided to see how different a P80 (Gen 1) pump is. I found a seller locally selling Bosch pump 0986 580 979 to suit P80s for $78 AUD. The ad claimed it suits C70s up to 2002 with the B5244T engine so it must have similar specs.

PARTS/TOOLS REQUIRED:
1) Hammer (my favourite tool)
2) 25cm (9 inches of submersible fuel hose)
3) Bosch pump 0986 580 979 comes with 2 X quality clamps (other parts in the fitting kit won't be needed)
4) 1 X axle bolt or 10mm threaded rod to push pump out of filter fixture
5) Gauze filter (I used an Aldi shopping bag pre-tested for fuel compatability)
6) High tensile spring 8.6mm wide to be inserted into submersible fuel hose (one of these can be stretched for 2 installations)
7) 10mm and 14mm sockets and ratchet
8 ) 2 X large flat screwdrivers for fuel hatch removal (thanks jimmy57) or suitable tool
9) Pliers
10) Adjustable monkey grips for fuel clip removal
11) Stanley knife (for old plastic hose cutting)
12) Small flat blade screwdriver
13) Scissors (to cut new gauze)
14) Paint brush and vacuum cleaner (to help remove dust/debris before hatch removal and inside pump housing)
15) 32mm ring spanner or ring socket (to locate pump back onto old gauze filter housing)
16) New fuel filter
17) Spare space for item I forgot to mention haha

Of course I removed the seat cushions first by folding them forward and releasing the red clips. Then I pried on the narrow board between the seat backrests and the luggage boards. There are clips that just require prying here. If you don't have the 7 seat option just lift the luggage board up and slide it closer to the tailgate.

Another important step is to disconnect the battery as the connector to the back seat will trigger an SRS code.
The new Bosch fuel pump for P80 series
The new Bosch fuel pump for P80 series
20141009_211530 %28Large%29.jpg (70.72 KiB) Viewed 1123 times
Remove the carpet keepers X 2.  I used a large flat blade to coerce them
Remove the carpet keepers X 2. I used a large flat blade to coerce them
Pull on this bolster and it will eventually come out
Pull on this bolster and it will eventually come out
Remove this connector
Remove this connector
Remove this 14mm bolt in order to remove the large seat backrest
Remove this 14mm bolt in order to remove the large seat backrest
There are 2 x bungee cords to unclip from the backrest
There are 2 x bungee cords to unclip from the backrest
Sound deadening material peeled back and finally we can see the hatch.  Backrest is upside down in footwell
Sound deadening material peeled back and finally we can see the hatch. Backrest is upside down in footwell
Hatch cover removed exposing the pump assembly.  The port is very dirty and needs a clean
Hatch cover removed exposing the pump assembly. The port is very dirty and needs a clean
The port cleaned up with a paint brush and vacuum cleaner
The port cleaned up with a paint brush and vacuum cleaner
I found it easy to press both clips with one of these
I found it easy to press both clips with one of these
Touche.  Engard Dartanion!!
Touche. Engard Dartanion!!
Finally pulled it out.  It doesn't come out easily and is tied to the sender on the other side by wires
Finally pulled it out. It doesn't come out easily and is tied to the sender on the other side by wires
Showing the 2 tabs to depress before removal of the sender resistor (press both in and pull up with pliers)
Showing the 2 tabs to depress before removal of the sender resistor (press both in and pull up with pliers)
Two tabs to press and the sender resistor can be removed
Two tabs to press and the sender resistor can be removed
There are 3 tabs like this around the housing to press in and then pull the pump upwards
There are 3 tabs like this around the housing to press in and then pull the pump upwards
The old gauze filter needs to be removed because in this case I couldn't pry the pump out
The old gauze filter needs to be removed because in this case I couldn't pry the pump out
The pump removed awaiting further extraction (notice I have already torn the gauze filter away)
The pump removed awaiting further extraction (notice I have already torn the gauze filter away)
Forcing the old pump out with a 1999 plus axle bolt (end of pump is metal)
Forcing the old pump out with a 1999 plus axle bolt (end of pump is metal)
Pump bodies are both 38mm
Pump bodies are both 38mm
Tops are a very close match
Tops are a very close match
Ends are near identical
Ends are near identical
With good clean Aussie fuel,  pumps should last about 60,000kms !!  I can now build a sandcastle!!
With good clean Aussie fuel, pumps should last about 60,000kms !! I can now build a sandcastle!!
Housing assembly after pump removal
Housing assembly after pump removal
Hmm my wife won't miss this shopping bag
Hmm my wife won't miss this shopping bag
Place some assembly grease on the tip of the pump inlet and hit the pump onto the gauze housing (gently)
Place some assembly grease on the tip of the pump inlet and hit the pump onto the gauze housing (gently)
Please note that the ties are not in their final position to clear the housing
Please note that the ties are not in their final position to clear the housing
The original hose can't be removed without breakage.  I used a Stanley knife to slice it carefully
The original hose can't be removed without breakage. I used a Stanley knife to slice it carefully
Zip ties @ 5 oclock to the protruding plastic piece
Zip ties @ 5 oclock to the protruding plastic piece
I used 2 zip ties for safety; hope they last
I used 2 zip ties for safety; hope they last
Instead of using this much like I first did, it's best to cut the spring in half and stretch it to the length of the fuel hose
Instead of using this much like I first did, it's best to cut the spring in half and stretch it to the length of the fuel hose
Clamp the submersible fuel line to the new pump
Clamp the submersible fuel line to the new pump
Insert stiffening spring (you can use twice the spacing I used to have a more flexible hose)
Insert stiffening spring (you can use twice the spacing I used to have a more flexible hose)
Fuel sender clicked back in place
Fuel sender clicked back in place
Pump reassembled and ready to be dropped back in
Pump reassembled and ready to be dropped back in
New pump in and waiting for steel hatch to be fitted
New pump in and waiting for steel hatch to be fitted
Reassemble the items in reverse order taking care not to pinch any wires around the hatch entrance.
Last edited by precopster on 12 Oct 2014, 02:38, edited 2 times in total.
Current cars VW Transporter 2.5TDI, 2010 XC90 D5 R Design

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regent
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Post by regent »

Awesome writeup!
Thanks.
Example of Precision: Measure with a Micrometer, mark it with Chalk, and then cut it with an Axe.
Disclaimer: We (very) seldom do that

2015 BMW 335i
2015 XC60 T5 Premier Plus
2002 S60 2.4 n/a - retired :(
1987 340 DL - retired :(

precopster
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Post by precopster »

Confession: this was actually done on my 2001 XC70 and I did the same thing on my 2002 XC70 yesterday.

A new revelation has surfaced as I discovered that the gauze filter separates from the plastic housing with some patient prying evenly around the edges. Hence no need for shopping bags :roll:

What I didn't expect the second time around was that the pump refused to be tapped out of the fixture.

I finally succeeded by levering it out by prying at the edges of the pump but it was a tough job.
Image
Current cars VW Transporter 2.5TDI, 2010 XC90 D5 R Design

precopster
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Post by precopster »

2 weeks and afew hundred kilometres from the fitment and no issues. The car used to ping before the fuel pump repair; no doubt caused by low fuel pressure. Some full acceleration bursts has clean power to the redline. Car gets by on far less throttle and fuel consumption is already less by 2L/100kms on short trips.

I researched some info regarding the OEM Bosch pump that was in the original fixture (0580453447) It is supposedly rated at 110L/hr and 3 bar pressure (around 43psi)

The P80 pumps provided by Bosch (0580314067) are rated at 120L/hr and are also 3 bar (43 psi) so this is effectively an upgrade though I believe the difference is negligible.
Current cars VW Transporter 2.5TDI, 2010 XC90 D5 R Design

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