Re: Overheats at idle - Saab 9000 Bulletin Board - Saabnet.com
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Re: Overheats at idle
Posted by Bill Homer [Email] (more from Bill Homer) on Tue, 19 Dec 2017 14:35:05
In Reply to: Overheats at idle, Rob 94 cse, Tue, 19 Dec 2017 10:50:50
Since you said that it's cooling down at speed, I would suspect the cooling fan circuitry - this would not be the case if the radiator was clogged. Is the cooling fan turning on when it starts getting hot and the car is not moving? On a 1994 (I also have one), the cooling fan should definitely be running on low speed by the time the needle is at 10:00. The cooling fan has two speeds, slow and fast, and two relays, which are driven off of the three wire temperature sensor in the bottom right (passenger side) of the radiator. One thing that I found is that the wires between the sensor plug and the relays is quite thin - undersized in my opinion - and can easily get broken and/or pull out of the plug that connects to the sensor. To access this area, you will have to remove the center panel below the front spoiler.
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