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Old 06-27-2012, 04:17 PM
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help....fan kicks on alot

just had new gaskets, arp studs, new oil cooler, hpop fitting changed, egr delete, injectors, ficm, and a coolant flush. now my fan kicks on more than it use to. anyone know why this could be. 05 6.0l 160k miles
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Old 06-27-2012, 04:24 PM
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Was the truck re-flashed? A lot of times certain programs will cause the fan to kick on at a lower temp than your previous flash version. Just a thought

Do you have gauges to monitor your temps? If not it would be a great investment so you really know what's going on inside your engine


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Old 06-27-2012, 04:28 PM
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i am not sure if it was reflashed, would that be something done at the diesel shop with a head job? i have not gauges but am about to buy some. i am looking at the SCT Livewire.
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Old 06-27-2012, 04:34 PM
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Oil temp connector pigtail, maybe.
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Old 06-27-2012, 04:38 PM
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Usually only the ford dealer will re-flash not a private shop but theirs no way to know for sure unless you knew your previous strategy and checked the strategy it's currently running.

Could possibly be the oil cooler plug pigtail misreading the oil temp and causing the fan to keep kicking on.


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Old 06-27-2012, 08:02 PM
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Unplugged EGR valve effect
Sounds like it isn't moving enough air. I have my EGR valve plugged in and it's held from bouncing around by using the right rear intake elbow bolt going thru the EGR valve hold down tab.

Last edited by Term3; 06-27-2012 at 08:09 PM.
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Old 06-27-2012, 08:32 PM
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So unplugged egr valve will cause the fan to kick on more often?
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Old 06-28-2012, 04:38 PM
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No, not get to maximum RPM so it's pulling in less air and staying on longer.
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Old 06-28-2012, 06:40 PM
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Also may have a bad fan clutch. It will throw a code if this is the case.
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Old 07-02-2012, 02:08 PM
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i talked to the shop that.did my work, he said it was not flashed. he did tell me that thet tranny could be causing it to kick on. sometimes my tranny does shift a little harder than normal going from 1st to 2nd. i am going to change both tranny filters this weekend to see if it helps
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