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Join Date: Nov 2012
Location: Somewhere hot and dirty
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Fan clutch quandaries
Alright so my questions is on the 6.4 if the fan clutch is disconnected does it lock up as sort of a fail safe mode or would it free spin. By which I mean spinning with the motor but not keeping up with rpm's. I'm trying to diagnose why since my fan was disconnected it has been stuck on even while disconnected even after idling and driving down the road in multiple situations. It simply refuses to disengage. This all started when I was replacing the heater hose that runs from the water pump to the heater core while doing so I unbolted the fan from the clutch and disconnected the fan clutch connector but that was it. When trouble shooting we did run the motor for a minute or so with out the accessory belt to eliminate other possible suspects maybe this messed up something? Another someone mentioned to me is the bolts from the fan to the clutch aren't installed very tight now if you over torque these may be they could have pinched something inside the clutch? Maybe I'm talking out my butt here I know it's some kind of fluid clutch but not sure on the operation of the clutch if any one has any experience with fan clutches let me know. Normally I would just caugh up the cash and fix what needs to be fixed but up until we changed the heater hose the fan had worked flawlessly before this and now it's decided to show its butt two days before I need to make a cross country trip is kinda aggravating the hell out of me and thanks for your thoughts in advance
2008 F-350 Lariat TRCCSB Lifted, Tuned, and Deleted
2003 Mach1 Bassani, 4.10s, pro5.0, bama tuned
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Last edited by thnderchcken; 11-12-2013 at 06:03 PM.