Everytime I look at the radiator sandwich and fan setup on my CRD, I think there must be
a better way.

What have you done to improve your cooling system performance?

Two year ago, when I did my timing belt, I installed the 195 deg inline thermostat and did
not reinstall the stock mechanincal fan. Been running with electric fan only.
But I've been thinking about different fan setups.
Like maybe a better more powerful aftermarket electric fan.
Or maybe putting the mech fan back on but with the hayben clutch.
Still trying to decide which is best.

Also, I wonder if a different AC condensor, without trans cooler attached, would be better
than the stock AC condensor?
And then add an aftermarket trans cooler on top of that?

We are pretty much stuck with the stock radiator and intercooler. No aftermarket ones
available.

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U.S. Army Retired

The stock cooling setup is more than enough for normal driving and light towing, provided the thermostat works within the specs. There is a thread in the tech forum regarding installation of electric puller fan.

Regarding the transmission cooler, the only way to upgrade to a serious cooler would require removal of the electric pusher and installing 2 smaller pushers, due to the hood front hinge/locking mechanism.

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

Assuming no "system" problems (bad mechanical fan clutch, bad thermostat, clogs caused by use of incompatible coolant, crud in vanes of that stack, etc - all pretty standard issues regardless of vehicles) the stock cooling system is just fine. I've had no issue nor did my son in summers in Tempe, AZ.

I am running the Hayden, preventative maintenance, with the nylon fan, just because. For a while I did run Kap's fixed fan which was a bit noisy under 45mph in town but not at hwy speeds. With the fixed fan I did notice a perceptible drop in the coolant temp on the dash gauge when I slowed from hwy speed to a stop at a traffic light. Not a lot of drop though and certainly not below normal operating temp. I presume that was due to the fixed fan spinning at idle much faster, hence moving more air, than the clutched fan.

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Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs