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  #1  
Old 06-22-2012, 01:31 PM
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6.4 cooling system problem

My 6.4 is giving me these two codes:
P0528
P0480
Looks like it has to do with the cooling fan. Can anyone give me a better idea of what fix might be necessary? I can't find very much info on this. Thanks!


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Old 06-25-2012, 07:23 AM
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Bump!! Anybody??


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Old 08-07-2013, 01:34 PM
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did you ever find out what it took to fix that? Mine just threw those two codes today too!!
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Old 08-08-2013, 05:07 AM
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Is it a 2008?
If so you never received the updated fan clutch or it's just bad.

These should be it:
The part number for the standard fan clutch is: 4C3Z-8A616-AA
The heavy duty "snow plow" clutch is: 4C3Z-8A616-SA

Better to call your local ford dealership for the proper numbers.
Hope this resolves your issues. Happy trucking!

P0528:
Some 2008 F-Super Duty vehicles equipped with a 6.4l diesel engine may exhibit diagnostic trouble code (DTC) P0528 (fan speed sensor circuit-no signal) and/or P0529 (fan speed sensor circuit-intermittent) during normal driving due to water entering into the fan clutch circuit. ACTION Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE Follow normal Powertrain Controls/Emissions Diagnosis (PC/ED) routine. If PC/ED diagnostic subroutines do not resolve the concern, install an updated fan clutch with improved sealing features. Refer to Workshop Manual (WSM), Section 303-03 for removal and installation.
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Old 08-08-2013, 05:14 AM
Yeah it's a Turbo Diesel
 

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yes mine is an 08..It's at the dealership now, I'm pretty sure it has something to do with the ac system as well since my ac went out and I just had the compressor and whole a/c system replaced about 2 months ago..either way it's under warranty so we'll see what happens.. Or like you said, it could be the fan clutch. I'll update when I have some news.

I appreciate the info man!~
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Old 08-08-2013, 06:02 AM
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Keep us posted Marshall!
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Old 08-08-2013, 06:16 AM
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Quote:
Originally Posted by mts678 View Post
yes mine is an 08..It's at the dealership now, I'm pretty sure it has something to do with the ac system as well since my ac went out and I just had the compressor and whole a/c system replaced about 2 months ago..either way it's under warranty so we'll see what happens.. Or like you said, it could be the fan clutch. I'll update when I have some news.

I appreciate the info man!~
I bet if the fan is not operating properly, then the condenser is not cooling the refrigerant enough to bring back to a liquid state. That may cause a high pressure condition in the A/C that could result in a forced leak. That or the A/C guys left a slight leak in one of the gaggle of o-rings in the system. I just rebuild the A/C on three of my vehicles, two of which had bad o-rings and one a bad pump. It's pretty easy to diagnose and repair these systems, so those A/C guys make a ton of money for fairly easy work. Must be nice!
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Old 08-10-2013, 04:30 PM
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Well I didn't get the truck to the dealership- I know my mechanic so I dropped the truck off at his house so he could drive it to the shop..well he didn't go into work that day and I needed my truck, so when I picked it up- the a/c was blowing fine, no chirping from the belt or anything like it was doing when it was blowing warm. BUT- it's still throwing the same codes. I've been searching "fan clutch" to see what I can learn, I'm not sure but it seems like there is a fan clutch sensor that could be bad? Maybe I can start there and replace that first?

My fear is that the fan clutch is bad or soemthing and times are really tough right now and I definitly don't have the cash to fix that out of pocket, but there's a chance that something on the a/c system is bad when the dealership replaced all of that, so idk!

What can I check or do myself before taking it back to the dealer?
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