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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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Coolant lossViews : 2001 Replies : 25Users Viewing This Thread : |
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May 1st, 2017, 12:25 | #11 | |
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Quote:
There's basically a flow restriction so you can either solve it in one hit by flushing the system and fitting a new thermostat housing or take a chance and flush only but if the thermostat is the issue, you'll have to revisit.
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2002 S60 SE D5 Manual 209000 miles |
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May 1st, 2017, 12:31 | #12 |
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Going to check the temps with Vida shortly to see what they are doing but yours is a good suggestion and I think I will do the thermostat at the same time as I will need to drain flush and refill anyway.
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May 1st, 2017, 14:18 | #13 |
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I ran Vida whilst drunk bing into town which is a 40 min journey plus with traffic. The temp climbed up to 88 before then settling in to a 88-85 wave.
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May 1st, 2017, 14:43 | #14 |
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Based on that, my advice in comment #11 still applies.
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2002 S60 SE D5 Manual 209000 miles |
Oct 29th, 2017, 14:58 | #15 |
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I am still having this problem. So far I have flushed the radiator and block both of which ran free. Changed the thermostat and fitted a new expansion bottle cap. Still have over pressure issues and that the bottom hose is stone cold even when the fan cuts in plus I have noticed that even if you put the heater controls to max heat it’s not that hot. I am now wondering if it is a Cade of the water pump not pumping for what ever reason.
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Oct 29th, 2017, 18:41 | #16 |
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Are both heater pipes too hot to hold?
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2002 S60 SE D5 Manual 209000 miles |
Oct 30th, 2017, 20:06 | #17 |
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No I could keep my hand on them. The metal elbows were the hottest bit and even on those I could keep hold.
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Oct 30th, 2017, 22:23 | #18 |
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Sounds like the coolant is not circulating to me
I wonder if someone has fitted a cheap water pump whilst doing a cam belt change and the impeller has come off ? Not seen this myself just a thought. Is there an easy way to test flow ? What about disconnecting the top hose briefly whilst the engine is running and see if water pumps out ? |
Oct 31st, 2017, 14:12 | #19 | |
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Quote:
If not, do that to verify good flow through the core.
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2002 S60 SE D5 Manual 209000 miles |
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Nov 18th, 2017, 15:07 | #20 |
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Had the pump off today and it is intact and rotated smoothly. I took the opertunity to flush with the hose again. I did in via the expansion bottle. Disconnect both sides of the heater matrix and flush that both ways I also went back down the hoses to it. I did the flushing both with the pump removed and when I put it back. There was a good flow each time. I also did the radiator again. I tried to check the thermostat but struggled a bit. Will try and check it again after getting the engine really hot. When I did check it there was a small flow through it but a dribble rather than it being fully open. As it’s a replacement one what do you think the chances of it being faulty from new are? I can’t think of what else would give me the pressure in the system (which remains once it’s cool) and seemingly no flow through the radiator. I also can see any indication of flow through the expansion bottle and hen it’s hot.
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