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1999 V70 Cross Country AWD Cooling fan wont turn on.
Hi, This is my first time posting..And my first Volvo.
Problem is the cooling fan wont run. I have tested the fan relay by jumping the control wires to ground (yellow and yellow /white). Then the fan switches on and off. I have replaced the temp sensor and the gauge never goes above half way, but the engine gets so hot I can start to smell antifreeze. I jumper d in a variable resistor so I could trick the ECM to think it was hotter. The Gauge went up and the fan ran. It will run the next time I go for a drive, but not after that. I also noticed that the fuel gauge wont go above half way with a full tank of gas. I think I have a bad ECM. Is there a way to calibrate it? Am I just overlooking something simple? Any help is appreciated. |
Radiator fan
Hello, did you ever get to the bottom of this? For the last year I have had an earth wire running from the relay to my cigar lighter that I plug in every time I start the engine. The 850/V70 and the newer V70 temp gauge is only for decoration. I wrecked my 850 when the rad leaked and the engine got so hot oil leaked and head gasket failed - dash temp gauge stayed normal. I have a 2002 V70 where the fan won't start, the indication that it was hot was NO OIL PRESSURE STOP message and again temp gauge said no problems
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Inquiring minds
It was very interesting that you were able to fool the ECM into turning on the fan relay.
Did you ever solve this problem? I too am suffering from the same issue.:confused: |
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