Re: overheating - found the problem; the fan won't run - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: overheating - found the problem; the fan won't run
Posted by BT [Email] (more from BT) on Tue, 28 Sep 2010 15:25:14
In Reply to: '97 900 SE 2.0 Turbo overheated, why?, BT, Tue, 28 Sep 2010 08:04:33
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Ok, so the fan works fine if you have the A/C on "Auto", but never comes on with the A/C in the "Off" setting.
I know these cars have 2 coolant temp sensors :
A) the temp sender (which supplies the value to the temp gauge on the dash) which is located right around the corner from the thermostat.
B) The NTC sensor located on the back of the head, between the intake runners for cylinders 3 & 4. I know the car uses this for fuel injection calculations.
The question is, which one is responsible for switching on the fan when the coolant gets hot?
In the meantime, I'll just leave the A/C on auto.
posted by 71.36.88...
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