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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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Xc90 D5 coolant leak, pipes ok, fluid on blockViews : 3328 Replies : 10Users Viewing This Thread : |
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Aug 8th, 2018, 10:10 | #1 |
Junior Member
Last Online: Mar 26th, 2024 20:23
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Xc90 D5 coolant leak, pipes ok, fluid on block
Hello all,
I wonder if anyone can help? Our 54 plate D5 has started loosing coolant. Been ok up until last week then it started dropping and now using about half a pint every 3 days. Pipes look fine but I have noticed blue coolant low down on the engine block. I'm not expert but it looks too for the head gasket. It seems to be weeping from the gasket but why is coolant down by the sump? Any ideas? Many thanks, Sam |
Aug 8th, 2018, 12:37 | #2 |
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Last Online: Dec 26th, 2021 13:42
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Location: Crewe
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Firstly, remove the timing cover and check all around the coolant pump which should be bone dry.
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2002 S60 SE D5 Manual 209000 miles |
Aug 8th, 2018, 12:59 | #3 |
XJS Driver
Last Online: Apr 15th, 2024 18:24
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Just what I was thinking, my money is on water pump - any water loss in cars I have owned with head gasket problems has always been via the cylinders so have seen an engine leaking water from a head gasket down the block.
Could it be a leaking core plug? |
Aug 8th, 2018, 14:12 | #4 |
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Last Online: Mar 26th, 2024 20:23
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Thanks.
I will check tonight. Any idea of cost of water pump replacement? Is it a big job? Sam |
Aug 8th, 2018, 15:02 | #5 |
Me ? Surely Not!
Last Online: Apr 5th, 2024 16:23
Join Date: Jul 2010
Location: 2007 Volvo XC90 D5 Geartronic. South of Hadrians Wall.
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If it is the waterpump ( quite unusual on a Volvo if original ). you may as well do the whole cambelt and auxiliary belt as well because the waterpump is driven by the cambelt.
Unless it has all been changed VERY recently, it makes sense to kill two birds with one stone . If you are handy with the spanners then all of this is very DIY doable.
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“Do the right thing. It will gratify some people and astonish the rest.” – Mark Twain 😊 2007 Volvo XC90 D5 SE Geartronic |
Aug 8th, 2018, 15:24 | #6 |
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Sounds promising. Can you do it without lifting the car? Only have a drive and won't work underneath on jacks. I could buy axle stands I suppose if it helps.
Sam |
Aug 8th, 2018, 15:37 | #7 | ||||||
Me ? Surely Not!
Last Online: Apr 5th, 2024 16:23
Join Date: Jul 2010
Location: 2007 Volvo XC90 D5 Geartronic. South of Hadrians Wall.
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No special gear at all although the crank pulley is at 300nm so you will need a high torque impact gun if removing crank pulley.
I always use good axle stands and leave a trolley jack in situ as well for additional safety. You remove the front offside wheel, peel back the inner arch liner once the retaining bolts have been removed and you will see the crank pulley. Volvo quote an hour to do a cambelt change and that is entirely possible. I've changed the belt on both my XC70 D5 and my XC90 D5 but both times the waterpump was left untouched as it was perfect. The access to the pump from this stage is pretty decent. Contrary to popular belief, the belt can be changed with the crank pulley in situ but obviously it is an easier job if removed. See here for Cheshired5 video
View of Waterpump change
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“Do the right thing. It will gratify some people and astonish the rest.” – Mark Twain 😊 2007 Volvo XC90 D5 SE Geartronic Last edited by S60D5-185; Aug 8th, 2018 at 15:48. |
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Aug 8th, 2018, 18:30 | #8 |
Junior Member
Last Online: Mar 26th, 2024 20:23
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Thanks. Do you have to drain the coolant before removing the pump?
Not sure how coolant would get to the front of the engine from a leaking water pump though, as it seems to be near the back. |
Aug 8th, 2018, 18:31 | #9 |
Me ? Surely Not!
Last Online: Apr 5th, 2024 16:23
Join Date: Jul 2010
Location: 2007 Volvo XC90 D5 Geartronic. South of Hadrians Wall.
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I would take the plastic belt covers off and try to ascertain where it's coming from for certain before taking the pump off.
Also, without being funny, make sure that you are entirely comfortable with how to change the belt because if you get the timing wrong or install the belt incorrectly your engine will be toast. It's not complicated BUT you have to be methodical and accurate with your work.
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“Do the right thing. It will gratify some people and astonish the rest.” – Mark Twain 😊 2007 Volvo XC90 D5 SE Geartronic Last edited by S60D5-185; Aug 8th, 2018 at 18:33. |
Aug 8th, 2018, 18:52 | #10 |
Premier Member
Last Online: Dec 26th, 2021 13:42
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Location: Crewe
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Also check for a pinhole leak in the radiator top hose and around the thermostat housing.
With correct coolant strength, there should be dried, white crystallised residue from the leak source. I'll admit that the coolant pump is unlikely because of the journey the coolant would need to make to where it is gathering but given the unusual location of the problem, just check all bases.
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2002 S60 SE D5 Manual 209000 miles |
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