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No, it has the what the service manual calls the IPM (fusebox), but not a TIPM.

Ok thanks. Guess I'll get another. So at what temp is the fan commanded to do anything?

To me, it behaves like there's a cracked/broken solder connection on a circuit board somewhere.

The thermostat is an OEM Cummins 190, replaced once since the truck was new, and the temp gauge behaved as the original prior to this AC/Fan issue. The temp didn't climb as it does now prior to opening, nor did the temp increase when climbing hills, especially unloaded. Right now it reads just...

Filled by weight, as prescribed according to the tag under the hood. Bottle on the scale, etc.

Backstory- 2004.5 HO Cummins owned since new, Smary Jr. level 1, 138,000 (I think) miles, basically a cream puff, no other engine/trans mods that I can recall offhand. A few years ago the AC stopped being cold. I read Tuesdak's threads and many many others around the internet and this forum...

True enough. That "low charge" state though is still high enough to cool the driver's side as normal and the passenger side is getting lukewarm, but I do agree, with all the electronics, it could cause wonkiness. Like you, my buddy who recharges my truck says a compressor seal may be slowly...

I suppose it could be a very slow compressor leak, unable to be detected, but I don't know how that would affect the fan behavior. I could very well be dealing with compound issues given its age.

Yes, the system was evac'd and recharged to the proper spec after the fan clutch replacement. Yes, the oil has been changed since all this was done, and the new filter has no A/C oil coating it. When I left work tonight (a few hours ago) I turned on the AC and drove slowly away- no morning...

Wiring is good. The replacement fan clutch is Mopar OEM- Vistronic if I'm not mistaken?

I should add, the truck is still a cream puff. It's had a great life, only 125k miles, no wiring chops, added goodies, Smarty Jr. has only ever been on fuel economy, etc.

We did a refill/leak check before I replaced the fan clutch and the entire right side of the engine was yellow and the oil filter coated. That's how I diagnosed the fan clutch. There was nothing visible or detectable. The only loss was out the relief prior to the fan clutch replacement. I...

OK, so it seems like my problem is back. The passenger side vents have gone warm again so I know I'm losing refrigerant. The truck doesn't have morning sickness (it did when I replaced the fan clutch), but maybe that's due to ambient air temp?? The engine temp rises over 200 (probably 210ish)...

Just to follow up, it seems to be working great. The only other problem I have is that all my HVAC doors move slowly. I have removed the motors and tested them and they seem to have a mind of their own. If I move the knob, they sometimes move, sometimes not, and if they move it's slowly. I...

10-4. Should I just vacuum again and do the recommended fill on the tag? Thanks.

Thanks Tuesdak- I did replace the fan clutch, not the fan, and I found that issue by reading one of your old threads. Definitely was the issue as far as I can tell.

I too would think I'm good on oil.

So my AC has been slowly leaking over the past few years and I've refilled it a couple times only to have it happen again. Trouble is, we don't drive it much so I usually ignore it until springs rolls around. This year, I figured I'd try to figure it out. My buddy pulled a vacuum and refilled...

Thanks guys for the replies. Those are my regular go to sites. However some of those listed for the are not for a later model 1655 (same as White 2-70), and to further complicate things while the injectors physically look the same, the orifice and pressure specs are different, which is odd they...

Howdy all- I have an Oliver 1655 tractor that uses Stanadyne pencil injectors #20498, in a Waukesha 283 diesel. Come to find out these injectors are very application specific, and nothing cross references. John Deere/Case pencils are much more common, but different and of course I had to buy...