anyone gotten bold enough to try to run their d without the clutch fan? the e-fan kicks on when the temp is over 195, so the clutch fan is just to provide a low volume of constant airflow, the stock e-fan pulls alot more air

anyone have any insight on this?

 

so far so good, just replaced my water pump and couldn't get the fan off so i figure id wait till tomorow, but after my test drive and speed run, and no change in the temp needle, its staying off until i see that needle go higher then normal

(i'm keeping the e-fan on by having the ac on low, with the cold button on) if my experiment yeilds positive results, i will wire in a seperate control switch that i will mount inside the cab

 

I can tell you my R/T cannot rely on the e-fan alone. I confirmed this last summer when my clutch fan went out. Then again I live in DFW where summer temps can easily go over 100 degrees. My efan cannot maintain the 195 operating temperature. My temp skyrocketed to 220 and I resolved this issue by replacing the clutch fan before it got any higher.

Is your engine a smaller engine? May be why your temps has not risen any higher or you may be living in a colder climate region compared to where I live. Also, if you ever plan to tow or live in mountainous areas, your oem e-fan may not suffice in cooling your D.

Another FYI, this is by design from Mopar, once your D reaches a temperature of 210 degrees, the PCM will go to limp mode, your gas mileage will suck, you will lose alot of power from your engine. This is Mopar's failsafe mode to prevent you from overworking a overheated engine which can lead to engine failure.

 

Kensai is right. If you just rely on the E-Fan you are looking for trouble.
It only takes one screw up and that will be it. [sm=oopssign.gif]

 

well i drove 80miles, went offroading then drove back 80miles without a single issue, it only got slightly higher of normal temps so i'm just going to get a higher CFM e-fan to replace the stock one

 

OK. But this is not advised. [:@]

I think you are heading for trouble.
I wouldn't tow, AC, and summer drive like that.

 

Only thing I can think of on why your D not getting hot using the E-fan only is that it may have been possible your D might have the tow package. So your D may have a bigger radiator. Also, your 4.7 engine works harder than a 5.9 so adequate cooling is critical. Also you may be living in a cooler area of the U.S. where you don't have to deal with sweltering heat.

So just for a backup, I would buy a replacement clutch fan and store it in your rear storage compartment. You never know if and when you drive into an area which causes your D to run a higher temperature where the E-fan just can't cut it and you have your clutch fan ready to be re-installed..

The E-fan that came from Mopar was not designed as a replacement cooling fan. It is only design to supplement the clutch fan to boost air flow across the A/C condenser coil when using the A/C and the D is sitting still idling. You may want to search for a real E-fan replacement solution. You can try a dual push fan setup to install on the front of your D and that may help assist the oem E-fan. You will have to check to see if your alternator can handle the extra amperages.