Fan clutch

[Fless]

It doesn't sound like it's working properly; there should be a good bit of resistance when the truck is warmed up.

What's the engine coolant temp look like on the gauge when the A/C is warm?

 

[SnowDrifter]

My fan clutch at 265,000 has the same resistance cold or hot. I cant totally spin it around like I have seen in some youtube videos. My AC has been having issues with it working initially then gets warm after 15 minutes. Worse in stop and go, but even on the highway. Should I replace it?

There's a TSB about adding an Efan due to the fan clutch not always being engaged and pulling cool air over the condenser when the a/c is on.

Warm on the freeway, however, gives me pause and raises doubts in my mind as to a fan clutch issue being the root of the problem.

 

[Merc1973]

It doesn't sound like it's working properly; there should be a good bit of resistance when the truck is warmed up.

What's the engine coolant temp look like on the gauge when the A/C is warm?

The temp on these 90° days even sitting in traffic never goes much over 200. Its never reached 210° but maybe the stepper motors in the cluster are bad not letting out go over 200?

It seems that when the truck is hot, the AC doesnt run, compressor clutch not engaging. I drive to home from work without AC yesterday and turned it on for the last 10 minutes of my drive after a 40 min drive and the AC would not engage.

 

[Merc1973]

There's a TSB about adding an Efan due to the fan clutch not always being engaged and pulling cool air over the condenser when the a/c is on.

Warm on the freeway, however, gives me pause and raises doubts in my mind as to a fan clutch issue being the root of the problem.

Thanks. The fan did used to roar a little upon cold start, but not anymore. Id rather not add efans if the AC was working fine until last year when installed a new condenser that had a loo ittle leak, also a new accumulator, orifice tube just because if high miles.

 

[jeffsyukon]

I just replaced my fan clutch and it made a significant difference in the AC performance. I thought the compressor was bad. Before my ac would lose all cooling at a stop and work fine when moving. Now it stays cool at a stop. It's not as cool as when I am moving but it works. The fan is much louder than before, definitely roars on start up and acceleration. I would like to convert to e-fans just hard to justify the cost on a 15 year old vehicle.

Sent from my SAMSUNG-SM-G930A using Tapatalk

 

[Tonyrodz]

I just replaced my fan clutch and it made a significant difference in the AC performance. I thought the compressor was bad. Before my ac would lose all cooling at a stop and work fine when moving. Now it stays cool at a stop. It's not as cool as when I am moving but it works. The fan is much louder than before, definitely roars on start up and acceleration. I would like to convert to e-fans just hard to justify the cost on a 15 year old vehicle.

Sent from my SAMSUNG-SM-G930A using Tapatalk

If you put the fans on a manual switch, or a cheap thermo switch, the conversion isn't really that expensive. Fans from an nnbs fit.