Norm-L
SCCoA Member
I've been trying to figure out if I have a radiator fan problem with my 95 SC. It seems to me that when the fan kicks in, it goes straight to high speed. It doesn't seem to match the specs in the service manual. Using an infrared temp gauge on the radiator by the upper hose nipple, the temp gets to 239F when the fan finally kicks in. It sounds like what I would expect to be high speed. It does drop the temp 10 degrees before it turns off. That cycle continues as long as it idles. I never see any other speed. The fan is supposed to kick into low speed at about 210F (if I remember right), and hit high speed if the temp gets to around 230F I have replaced the IRCM, feeling certain that would solve the problem, but no. Interestingly, though the fan does the same thing whether the AC is on or off, the temp gauge on the dash is less than 1/4 of the way up with the AC on, but with the AC off, the temp gauge keeps climbing. I get that the AC fan would likely help cool the coolant as well, but I don't get why the gauge temp doesn't react the same as the radiator temp.
Has anyone ever had the low speed fail because of a bad cooling fan motor? Can the motor lose just one speed while still working otherwise?
Note: I have also replaced the temp switch and gauge temp sender.
Any ideas??
Thanks,
Norm
Has anyone ever had the low speed fail because of a bad cooling fan motor? Can the motor lose just one speed while still working otherwise?
Note: I have also replaced the temp switch and gauge temp sender.
Any ideas??
Thanks,
Norm
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