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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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Volvo V70 D5 185bhp 2006 Mystery Coolant LeakViews : 4693 Replies : 38Users Viewing This Thread : |
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#21 | |
Experienced Member
Last Online: Today 16:03
Join Date: Jun 2007
Location: L/H side
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#22 |
Me ? Surely Not!
Last Online: Apr 25th, 2024 19:48
Join Date: Jul 2010
Location: 2007 Volvo XC90 D5 Geartronic. South of Hadrians Wall.
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Sounds to me like there is now air in the cooling system following the hose replacement.
Have you bled it? If not make sure that the heaters are switched on as well because the heater matrix is part of the cooling system.
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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 |
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#23 |
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Last Online: Today 16:03
Join Date: Jun 2007
Location: L/H side
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The system soon self bleeds , just make sure the coolant bottle is full and check it when it cools down in the morning . The heater needs no special treatment as it is flowing coolant all the time the engine is running .
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#24 |
Me ? Surely Not!
Last Online: Apr 25th, 2024 19:48
Join Date: Jul 2010
Location: 2007 Volvo XC90 D5 Geartronic. South of Hadrians Wall.
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Thanks Clan, when I've done mine in the past, I leave the expansion cap off until the thermostat has opened and recheck level then before fitting the cap.
Learn something every day.👍
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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 |
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#25 | |
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Last Online: Today 16:03
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The new generation cars need a Vacuum system to draw the coolant in due to their complex cooling system ,it works a treat though .
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#26 |
V70 D5 185 Owner
Last Online: Jun 17th, 2024 15:41
Join Date: Nov 2014
Location: Ipswich
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I was a bit sceptical about the Coolant temp Sensor as I hadn't touched anything in that area so I checked it with a multimeter.
With the engine cold and ignition on I am getting 3.35 kOhms resistance across the terminals. Is this withing range? When I test the supply connector I am getting 0 volts from either pin to a good earth. I would have expected about 5V. Any ideas? Thanks |
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#27 | |
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Last Online: Today 16:03
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the temp sensor does not use the body for earth , try a voltmeter across the terminals ...!
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#28 |
V70 D5 185 Owner
Last Online: Jun 17th, 2024 15:41
Join Date: Nov 2014
Location: Ipswich
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I am getting 0 volts across the two terminals of the coolant temperature sensor supply cable with the ignition switched on. So where to look next?
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#29 | |
Experienced Member
Last Online: Today 16:03
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the wires go into the ECU on the air filter so not a great distance between sensor and ECU ...
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#30 |
V70 D5 185 Owner
Last Online: Jun 17th, 2024 15:41
Join Date: Nov 2014
Location: Ipswich
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Do you know which pin(s) on the ECU go to the coolant temp sensor?
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