Jeep put in a plastic T/C but I have 6 speaker stereo, fog lamps, leather steering skin and plastic bag holders in the back.
Cheap crap then wasteful excesses it seems to me.
Maybe they put the electric fan to help the mechanical fan.
Just does not make sense to me. The shroud on the electric fan covers quite a bit of the radiator. I hate 'built by committee.'
I thought this thread was started in jest at first, thanks for bringing this to my attention.
R

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'06 Jeep Liberty Sport CRD with: GDE Hot Flash and Tranny Flash, ehm, Cummins fuel pump, 3" Magnaflow muff, Moog K3199's, Skids, 225-75-16 10 ply, OME springs, Euro T/C, Shift kit, Trans cooler w/thermal bypass, Bigboy bkt, Samco CAC, Brake controller, Trans temp gauge, Al's Upper Arms

That electric fan will contribute to long life when towing - it doesn't block any air, even at 30mph - watch your ECT guage for verification - the middle hash left of center is ~160degF - watch it climb slowly to 180deg, than rapidly drop to 160deg as the t-stat opens - then note the continual repetition, until you start towing - only thing that fan blocks is overheating

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go

Last summer when it was only 117*(in the shade, which is about 135* 3' off the asphalt), I was pulling a 4000 LB load up a 6% grade, only going about 75 mph with the AC on, and the temp gauge started to climb. After awhile it started "Dinging" like the seat belt chime. It did this three times and after the third chime, it was just like I took my foot off the gas even though I had my foot in it. It dropped to 40 MPH even though I was kicking it under the tail, it would only go 40 until the temp came down. Then it took right off back up to 70+ MPH until it started dinging again.
So it looks like there is some kind of warning system that tells you that you are not going to cook it, and it also means to change lanes over to the slow lane....

Hey, at least it's "Wife Proof"......

That could be ECM pulling fuel due to high Inlet Fuel Temp, that sensor on the fuel manager head - it's supposed to do that at temps over ~170degF - be informative to observe those goings-on with AE scantool

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go

That's due to you running the A/C while it's that hot and pulling near max load uphill,running the A/C adds alot of extra strain on the engine and the cooling sytem(from the condensor).Turn the A/C off while towing uphill and you won't have that problem.

Is your KJ equiped with the aux fan for the towing package, TurboTim?

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go

Um, you turn off your AC in 117 degree heat. I drove last summer through eastern WA and ID in 109 degree heat and turning off AC for even a minute saw the cab heat up precipitously. Ugh. I can't imagine how fast it would heat up at 117 degrees...

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2006 Jeep Liberty Sport CRD

What is the expression about 'Mad dogs and Englishmen out in the heat of the noonday sun' by Kipling? I think he was referring to India.
Certainly not manly boys with their toys out to do adventures.
I learned in Arizona long ago that some things are best done at night.

As far as the electric fan goes for me if it ain't broke I won't fix it.
Anyone gone bigger with the radiator?
Any room for one?

R

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'06 Jeep Liberty Sport CRD with: GDE Hot Flash and Tranny Flash, ehm, Cummins fuel pump, 3" Magnaflow muff, Moog K3199's, Skids, 225-75-16 10 ply, OME springs, Euro T/C, Shift kit, Trans cooler w/thermal bypass, Bigboy bkt, Samco CAC, Brake controller, Trans temp gauge, Al's Upper Arms

Yes I have the tow package and the aux “Electric” fan in front of the radiator.

Yes I was hammering it but also noted that the temp gauge was pinned on the hot side.

I know that there was some talk about the calibration of the gauge but I also noted that it will stay in the middle a long time before it goes up. When it does go up, it goes fast.
This is why I question the calibration as temperatures don’t move that fast from normal.

This summer I will be monitoring many things with my AE laptop setup now that the SEGR is up and running also…

By the AE laptop, do you mean Adobe After Effects?
Also, are you one of the origional designers of the SEGR?
Happy towing.
R

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'06 Jeep Liberty Sport CRD with: GDE Hot Flash and Tranny Flash, ehm, Cummins fuel pump, 3" Magnaflow muff, Moog K3199's, Skids, 225-75-16 10 ply, OME springs, Euro T/C, Shift kit, Trans cooler w/thermal bypass, Bigboy bkt, Samco CAC, Brake controller, Trans temp gauge, Al's Upper Arms

It would be interesting to see what happens this time with the SEGR installed and the heat load from the EGR system eliminated. Not only is that reducing direct load on the cooling system via the EGR cooler, but significantly reduced air intake (and exhaust) temps in the end are helping reduce cooling system load as well.

With the ORM/SEGR in cold weather we have a cooling system that is significantly oversized requiring the use of grille blockers/blankets, yet evidence from last summer suggests that for towing in hot weather with A/C operating we're taxing the upper limits of the system.

One thing to remember for towing with A/C use - the same combination cooler is used for both A/C and tranny fluid. Adding an aux tranny cooler can significantly reduce the amount of heat (and temp of the air) being pulled back thru the intercooler and radiator. It has the added benefit of improving both tranny operation (lower fluid temp) and A/C cooling capacity - more of the capacity of that combo cooler is available for A/C use.

The amount of heat added by an EGR system is not insignificant. On the newer model cab over OTR trucks, to meet '07 emissions for U.S. use, they weren't able to increase the size of the radiator due to the design of the truck. They had to redesign the cooling system and add an auxiliary radiator, almost the size of what's in our CRD's, to be able to handle the additional heat load. Since I started working there in '97, I've seen the size of the radiators more than double to handle the additional heat load from progressively increased use of EGR as new emissions requirements took effect.

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Mitchell Oates
'87 MB 300D Diamond Blue Metallic
'87 MB 300D - R.I.P. 12/08
'05 Sport CRD Stone White
Provent CCV Filter/AT2525 Muffler
Stanadyne 30 u/Cat 2 u Fuel Filters
Fumoto Drain/Fleetguard LF3487 Oil filter
V6 Airbox/Amsoil EAA Air Filter
Suncoast TC/Shift Kit/Aux Cooler
Kennedy Lift Pump/Return Fuel Cooler

Yes I am the designer or the "SEGR" circuit. However, I want to point out that this WAS a group effort. I could not have done it without the help of many here. Also I want to thank (and you may want to also) the ones that put it together for you, making kits, and cleaning up the installation drawings. There was a lot of work going on not visible to most here.

The AE laptop refers to Auto Enginuity’s software/hardware interface to the OBDII port for reading all engine and other data from the CRD’s computers. This way I can monitor any sensor so I can see what is really going on. For example, the temperature gauge, what is really the engine water temp vs. what the gauge says.

I for one am looking into a larger radiator as I for one don’t want to explain to my wife why we can’t run the AC in 117* weather! (If anyone knows of a real good excuse, let me know).

Slowing down in the right lane is not an option I want to exercise.

I had this problem, too. Took it to Bill Luke in Phoenix for the sb and haven't had the issue since. Note: I wasn't towing anything but the gauge still pegged hot when climbing any grade (I17 to Flag) but stayed in the middle all other times.

Gary

Instead of a bigger (or additional) fan or a bigger radiator, How about an
engine oil cooler?

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U.S. Army Retired

An engine oil cooler won’t be that efficient for most of us. One of the reasons you cannot run synthetic oil in an air cooled engine (like the old VW’s) is because synthetic oil doesn’t absorb heat very well. Dino oil is much better for that application.

It comes down to the capacity of the cooling system. If you have more cooler water in the “System” than you need, you can run harder, longer…

That is a very interesting statement about Synthetic oils. After all the ridiculous crap being spouted in the Amsoil threads, thats one topic that never came up. I'd be interested to hear more about this, and its potential impact on engine wear/life. Sources would be awesome as well, but don't take that as me challenging your professional opinion, I'm fairly in the 'synthetics are for suckers with too much money' camp.

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2006 Jeep Liberty Sport CRD

Reflex,
Do you use synthetic in your rig? What do you use?
In my generator/welder dino oil gets broken down quickly, big difference with the synthetic, lasts much longer.
Being new to the CRD world, interested in other opinions but want the diesel weasel to last.
R

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'06 Jeep Liberty Sport CRD with: GDE Hot Flash and Tranny Flash, ehm, Cummins fuel pump, 3" Magnaflow muff, Moog K3199's, Skids, 225-75-16 10 ply, OME springs, Euro T/C, Shift kit, Trans cooler w/thermal bypass, Bigboy bkt, Samco CAC, Brake controller, Trans temp gauge, Al's Upper Arms

I don't consider myself an oil expert, I just disliked the snake oil sales technique some were using in a previous thread. The thing is that any decent quality oil will do just fine in standard driving, especially in a diesel when changed on a reasonable interval schedule(I do 6250 miles on mine). Right now I just use whatever Chrysler reccomends at the dealer, once I'm out of warranty I'll use whatever the local Jiffy Lube or whatever uses. I have never had a engine failure that was traced to oil problems or wear, and that was driving gassers which break down oil much worse than diesel.

The supposed benefits of synthetics to my mind wouldn't come into play during the usable lifespan of the engine, which makes them a waste of money. Even if they are theoretically 'better', what does that mean if the benefits won't start showing up until a million miles plus? Is anyone really planning to drive it for two million miles? And wouldn't it be just as good or better to change twice as frequently with an oil half the price, especially if as TurboTim states they actually help cool the engine better(heat is an enemy of mechanical devices)?

I'd like to see what TT has to say about it.

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2006 Jeep Liberty Sport CRD

I don't care who you are, that right there is funny!

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2005 sport crd-SOLD No regrets

I'm not 100% sure but I think all crd's got the electric aux fan. Mine did not come with the towing package but has a electric fan along with the mechanically driven one

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)