Georgia Fiero Club Forum
All Things Fiero => Tech Tips, Tech Questions => Topic started by: aerodonamic on May 20, 2013, 08:24:13 pm
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The Radiater cooling fan has gone out twice in my car in a 8MO. period . Both times it took out the printed circuit board in my heater contril panel. I don't understand way this is not protected by a FUSE!! As the motors seem to be of poorer quality, this may be a need to put an inline fuse in the circuit for protection. If someone has dealt with problem , please share what you have done to prevent future problems!!! Thanks,aerodon.
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We can measure how much current the fan pulls, and add an appropriate fuse holder and fuse. Will probably be a big one.
I think my meter will handle it.
Is there no fan relay or anything? If there is, it shouldn't be frying the circuit boards.
I need to check my manuals.
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What mode are you running in when it blows? A/C, Vent, Defrost? if it's in any mode that would energize the fan even though the temp is low, it might be in that circuit rather than in the regular fan switch circuit. Engine compartment fan is an area that comes to mind.
Got to get that thing fixed before the drive to the 30th.
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I forgot to mention that my low temp. switch was also fried. Had to order a new one from Rodney Dickman. all is running just fine so far. I cannot remember if the switch went out last time this happened!!!
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Don,
You need to check all the connections that feed the fan motor. Hot and ground.
A bad connection will cause the fan motor to draw too much current. (Hard to explain, and counter-intuitive, but true in a lot of cases.)
It's possible that that's what fried the switch, the circuit in the control head, and the motor itself.