Low speed fan is out. - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Low speed fan is out.
Posted by saabdoc [Email] (more from saabdoc) on Fri, 20 Nov 2009 11:33:55
In Reply to: Just got my 02' 93SE and is this normal?, Engine Driver, Fri, 20 Nov 2009 08:01:35
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Your low speed cooling fan is probably not working.
The cooling fan on your car is a 2 speed fan. When the low speed resistor goes bad, then only the high speed comes on. Because there is more airflow when the high speed comes on (compared to low speed) the pressures in the a/c system drop rapidly and the fan shuts off after being on for a very short time. And then when its off, a/c pressures rise and the fan kicks on again. THis will cause the fan to cyle a lot. And only stay on for short amount of time.
And becuase the high speed fan takes a lot of current when its switch on, this can cause the shutter as the engine is trying to adjust to the high load of the fan.
posted by 74.7.12...
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