Question about 2002 Ford F150 Regular Cab
About a week ago my overdrive switch wouldn't work, check manual, found 5A fuse had blown,,never an issue before, and the next day it had blown again..ideas?
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Posted on Jan 02, 2017
SOURCE: Blowing Fuse
There are a few possibilities here. First, you may have high starting amps on the compressor. You mentioned the run capacitor being changed. I'm not sure if you have a start capacitor, but that should also be checked. If you don't have a start capacitor, I would recommend having a hard start kit installed in the unit. It's basically a start capacitor with an internal relay to take it out of the circuit when the compressor is running, and wires up in parallel to the run capacitor. Also, check all of your line voltage wiring. Make sure all the wiring connections are tight (wire nuts, screw terminals, etc.), and that there's no issue with wiring insulation rubbing off from vibration, etc. Finally, check the points on the compressor contactor. If the contacts are black and pitting, it causes arcing, which means excessive amp draw through the contactor.
Posted on Jun 23, 2008
YES! The owners manual states explicitly that "O/D Off" should be engaged whenever you are towing, I always ignored it for towing under 3000 lbs. The only way I would try it with our 4R100's is with a 4-5 plate Torque Converter Clutch and a Wood/IPT/BCS/Banks rebuilt unit running a separate cooler. The problem originated when Ford shifted to a Pulse Width Modulated (not just on/off) Torque Converter Clutch solenoid for "smoother" shifting. The increased slip in these clutches resulted in faster wear and higher heat levels... and blown solenoid packs. Another $150 down.
PS. You will not see any change in the tranny temp gage in the dash until the temp is well over 230F... too hot for Mercon! Get an aftermarket gage pod to keep an eye on things.
Posted on Nov 19, 2008
More likely that the solenoid in the transmission is shorted to ground. Has any new electronic equipment been installed recently, like stereo, alarm, etc?
Posted on Feb 10, 2009
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