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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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Cooling FanViews : 559 Replies : 8Users Viewing This Thread : |
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Feb 7th, 2019, 19:21 | #1 |
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Cooling Fan
Some advice and guidance please:
V70 2006 Petrol T5 - 230k miles: The radiator fan has started to come on all the time (even when engine cold and just started). Car runs alright, air con works to a fashion - no material change in air con functionality for the last couple of years - this fan issue started about a month ago. VIDA comes up with the ECM-5200 a/c pressure sensor - faulty sensor. Code can be cleared, fan stays off for a few miles then comes back on again. Have been searching around here - is it the pressure sensor - if so, where does it live and how easy to get to etc - part numbers? Or is it a dodgy module in the fan / housing hence a new fan needed? Thanks.
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Running both a V70 T5 (2006) and XC90 D5 (2011) I have VIDA available if anybody is nearby! Proud Biker - VfrVTEC800 |
Feb 8th, 2019, 10:14 | #2 | |
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Quote:
This thread is fairly typical https://www.matthewsvolvosite.com/fo...ic.php?t=64894 As with all sensors my first suspect would be the wiring and or plug. Last edited by Brendan W; Feb 8th, 2019 at 10:16. |
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Feb 8th, 2019, 11:33 | #3 |
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On the picture that Brendan posted there is the older pre-facelift design with a separate dryer can.
Yours should have the drier looking more integrated to the side of the condenser. I'd remove the bumper and radiator support to get better access to it. If your system has refrigerant in it then you need to evacuate the system properly before removing the sensor. But check the VIDA readings first, what does the A/C pressure read?
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2002 V70 D5 |
Feb 8th, 2019, 11:59 | #4 |
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As to why the A/C pressure sensor would cause the fan to run, if the CCM doesn't get a normal reading from the sensor, in case the pressure is high, it runs the fan to lower the condenser temperature and eliminate the risk of probable A/C overheating.
However in this case it should also cut the compressor. Does the compressor engage and A/C work? Compressor also doesn't engage when evaporator temperature is below 6C to avoid it freezing so not sure what's the weather like in your area.
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2002 V70 D5 |
Feb 8th, 2019, 17:43 | #5 |
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Still trying to find my way around VIDA - where do I see what the a/c pressure is?
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Running both a V70 T5 (2006) and XC90 D5 (2011) I have VIDA available if anybody is nearby! Proud Biker - VfrVTEC800 |
Feb 8th, 2019, 18:22 | #6 |
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Diagnostics >Vehicle Communication >CCM >Parameters
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2002 S60 SE D5 Manual 209000 miles |
Feb 11th, 2019, 19:29 | #7 |
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Maybe I'm being numb - but I can't see anything in that bit of VIDA that mentions pressure?
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Running both a V70 T5 (2006) and XC90 D5 (2011) I have VIDA available if anybody is nearby! Proud Biker - VfrVTEC800 |
Feb 12th, 2019, 03:09 | #8 |
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I don't have Vida handy to check so try CEM or ECM Parameters..... AC pressure is definitely in one of them.
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2002 S60 SE D5 Manual 209000 miles |
Feb 21st, 2019, 19:27 | #9 |
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Fixed
Just as a follow up - maybe useful for anybody else who has the same problems.
Was definitely the sensor - part from Volvo was approx. £90 and then another £100 to drain the refrigerant, change sensor and refill refrigerant. Was expecting a lot more so overall happy its fixed.
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Running both a V70 T5 (2006) and XC90 D5 (2011) I have VIDA available if anybody is nearby! Proud Biker - VfrVTEC800 |
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