Fan speed sensor

[yeehaw]

I had the truck throwing a P0528 code few months back and I didn't have time to really mess with it. So it ended up in the shop and all signs pointed towards the fan clutch, throw a new one in and all was good. Now the truck is throwing the code again, plus a p0480 which is a cooling fan malfunction. Wiring looks good, anything else i need to look for? I know my A/C control module is going out because every now and then the blower motor will go to full (high) I have one sitting here but since it isn't constantly broke i haven't messed with it. But could the random spike in the a/c system randomly tigger the fan? I don't really have any weird fan noise, only once towing the gooseneck has the fan kicked on for about 30 seconds. Truck runs constantly at 192 degrees ECT.

 

[yeehaw]

a/c control module didn't fix the code, still have a p0528 that immediately trips when the truck is started

 

[TheRobenator]

Do you have the A/C on when reading codes? IF so, it will throw a code like AC out of range or something like that.

 

[Atsah]

Not sure about the codes but it sounds like your blower resistor is failing.. It will default to high when it's on it's way out..

 

[yeehaw]

i don't have a resistor being auto control. Turns out my new fan clutch was defective, all fixed now

 

[Atsah]

i don't have a resistor being auto control. Turns out my new fan clutch was defective, all fixed now

Ahhh..

 

[yeehaw]

trucks running great now, 17-18 mpg average, doing 100 miles or more a day though. Can't wait to move into the new place this week.