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Temperature gauge won't go up

Everything on the Volvo S80. Sometimes called an "executive car", the S80 was Volvo's top-of-the-line passenger car. P2 platform.
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alextex27
Posts: 1
Joined: 2 April 2018
Year and Model: 2000 S80 T6
Location: MA

Temperature gauge won't go up

Post by alextex27 »

I have 2000 Volvo S80 T6 temperature gauge is not going up, and my radiator fan is running all the time, and it also runs after I shut off the engine, I have replaced the temperature sensor and replace the whole dash cluster gauge and nothing has changed.
I don't know what going on right now. I have some mechanic skill, I replaced the transmission on this car last myself. I can do almost anything. I also have extra S80 computer that I haven't tried yet. Please help me with this problem.

atman100
Posts: 15
Joined: 3 January 2009
Year and Model: 2005 S80 ,
Location: Arizona

Post by atman100 »

Don't put that extra computer in!! I have heard stories of computers from other volvos that once put in, cause a total failure of the vehicle as they are foreign to the programming of the current system. Such failures cannot be repaired.

Change the thermostat. The old one is stuck in the open position so the water never heats up and you gauge shows that. Have you already put in a new thermostat ?

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