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Low Coolant Level Sensor? 850 1995

My low coolant light is on but the level is fine and the temp is exactly what it always has been. I'm assuming it's the sensor... Can anyone give me some info about how I replace it myself? Thanks!








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Low Coolant Level Sensor? 850 1995

I had this same intermittent problem on my 99 S70.
If you open the coolant resevior cap (make sure the car is cold) and look inside there is a float which is like a washer that travels up and down on a spindle. If the float sticks in the down position it gives a low level light on the dash. Even though my coolant looed clean I think I had some crud on the spindle so that the float would sometimes get stuck. SolutionL I used a clean screwdriver to gently push the flat down and let it float back up (due ot the pressence of coolant - then pushed it down again and reapeated this about two dozen times. I think this loosened the crud on the spindle and since then has been just fine. Might not work in your case but worth a try.








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Low Coolant Level Sensor? 850 1995

DC--I changed out my thermostat last week and was surprised at what a nasty job it was. The two torx head bolts had galvanized themselves into the aluminum head. I had to take it to a garage to get the back one loose that hides under the two fuel lines going to the injectors. Once I had the thermostat housing off I discovered where Volvo had hidden the coolant sensor. It's right below it, and was undoubtedly partly responsible for the bolts galvanizing because of the voltage through that area. What made me arch my eyebrow though was all the corrosion on the two leads going into the sensor. They were both white, as too some of the threads on the two bolts I finally got out. The leads on the coolant sensor are only about four inches long and disconnect, but not on the sensor side. You can't get the sensor out without removing the thermostat cover, and once you do that, it will take a slim open end wrench indeed to remove the sensor. You can cut away the loose black plastic cover around the two wires and use some electrical cleaner to get rid of the corrosion, but it may have already penetrated into the sensor itself. Take some time and go to a wrecking yard with your torx wrenches and remove a sensor from a wreck, or watch as the yard mechanic does it for you, and then replace the one in yours and see if it does the trick. I wouldn't think the sensor would be any different on Canadian models than US, but you never know with Volvo. Get the p/n off the old one if you remove the thermostat cover, and then check around. Best of luck. Dick








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Low Coolant Level Sensor? 850 1995

Something else strange... Every Volvo parts site I visit looking for a sensor only has sensors for "850(Canada)". Does this mean that it's a Canadian part or a Canadian built 850? Will that part fit mine?








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Low Coolant Level Sensor? 850 1995

maybe your mix is off and it is freezing - happend to me.








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Low Coolant Level Sensor? 850 1995

This whole thing started around July in North Carolina... which tells me it's not a freeze problem.








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Low Coolant Level Sensor? 850 1995

mosquitoes?








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Low Coolant Level Sensor? 850 1996

yeah, same happens to my wagon. usually it occurs after driving a considerable distance. check the level and it is definitely not low. sometimes it just flashes upon acceleration. anyone have any ideas?








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Low Coolant Level Sensor? 850 1996

yeh its the screen wash light??????







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