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2 speed fan???

Since we're on the topic.  My '91 90csq20v appears to have a two speed 
fan. (According to Bently anyway...) The switch on the bottom of the 
radiator has three wires  which should be ground, high and low speed. I 
only get the fan to go on when I short out the ground and low speed one. 
According to bently if I short the gnd and high speed it should run at a 
higher speed... It doesnt.
After following the wires and schematic, I found whats called a high 
speed fan relay in my relay box...at least the socket for it. THere is no 
relay in it. If I put one in will I get the second speed? When is the 
second speed used? Was it an option?

Bob D'Amato                     |Information and Technology Center
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