Originally Posted by
Merlincat
Hi,
So after replacing the 50 amp fuse, the fans turned on but wouldnt turn off even with ignition off. So I replaced the the fan module, bingo, problem solved, fans turning off and on as they should. Buuuut then the other day, car is running for 20 minutes, fans quit again. I believe the 50 amp fuse is blown again, ordering a new one today, hopefully the new fan module isn't ruined.
WHy not just measure the voltage at the load end of the fuse and KNOW if it blew?
I think possibly a short in the wire from the 50 amp fuse to the fan module, causing it to try and drawn too much to the fan module.
If there is a short to ground in that line, it won't harm the fan module, it will just blow the fuse.
Also my friend suggested maybe the voltage regulator in the alternator is faulty, as I'm having other blown fuses (2 that control the radio), charging system peaking inappropriatly, intermittently causing too much load to fuse blowing circuits.
Any thoughts would be much appreciated!
-thanks
Well if we had a simple voltmeter on the dash we'd know if system voltage is too high. It is certainly possible for the system voltage to be too high - keeping an eye on system voltage with one of the cigarette-lighter voltmeters would be a good idea. You can also try simply measuring system voltage with teh engine idling and also at, say, 2500 rpm - see if it is stable and below about 14.5