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KJ CRD Overheating
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=50202		 Page 1 of 1
Author:  RustyRoo [ Sun Feb 14, 2010 7:58 pm ]
Post subject:  KJ CRD Overheating
G'day Guys, Wondering if anyone has some suggestions. KJ CRD overheats when towing caravan up steep hills. Dealer flashed computer said that it was a fix for false temp readings. Still overheats despite locking tranny in 2nd. Funny thing is when I pull over and let engine idle for a few minutes it cools down extremely quickly, like temp guage drops like a stone. After temp has come down I can carry on up a mountain with no more overheating. Very strange. Any ideas --Thanks Rusty Roo :?:
Author:  Glend [ Sun Feb 14, 2010 8:55 pm ]
Post subject:  Re: KJ CRD Overheating
Rusty, this is a fairly common problem for some people, and some KJs. There was a Tech Service Bulletin out on this for certain years of the KJ (2005 mainly I think). It did involve a flash to correct the temp gauge performance.

I also know of one KJ that was found to have a faulty viscious fan (the one driven off the front of the engine) that was causing a higher than normal temp reading. A cooling system guy or a mechanic can test that for you (basicaly involves holding the blade stationary while starting the vehicle and looking for clutch takeup with rpm, don't try it yourself you might lose a finger).

How heavy is the caravan?

If your going to be towing, get an auxiliary transmission cooler installed (this will save you $ later in transmission issues).

Your in Sydney? Watch for the next KJ Picnic Day annoucnement.
Author:  JL Rockies [ Sun Feb 14, 2010 11:14 pm ]
Post subject:  Re: KJ CRD Overheating
I vote fan clutch.
Author:  Wobbly [ Mon Feb 15, 2010 10:12 am ]
Post subject:  Re: KJ CRD Overheating
Are there any DTCs set?
Author:  RustyRoo [ Mon Feb 15, 2010 6:22 pm ]
Post subject:  Re: KJ CRD Overheating
Thanks Guys, fan coupling was checked by dealer and found to be okay. Last post DTC's ?
Van weighs 1750kgs gross. Dealer also flashed the comp for the faulty readings. Thaks Glen, are the picnic days announced on this forum? Rusty :)
Author:  Wobbly [ Tue Feb 16, 2010 10:15 am ]
Post subject:  Re: KJ CRD Overheating
RustyRoo wrote:
Thanks Guys, fan coupling was checked by dealer and found to be okay. Last post DTC's ?
Van weighs 1750kgs gross. Dealer also flashed the comp for the faulty readings. Thaks Glen, are the picnic days announced on this forum? Rusty :)

DTC = Diagnostic Trouble Code viewed with code scanner. Must not have had any or the dealer would have told you.
Author:  AZScout [ Tue Feb 16, 2010 6:03 pm ]
Post subject:  Re: KJ CRD Overheating
Is this a Kimberly Karavan?
Author:  Sonix [ Thu Feb 18, 2010 9:51 am ]
Post subject:  Re: KJ CRD Overheating
I'm also pulling a 1300kg Caravan with my KJ here in South Africa ... during summer, when I pull up a mountain pass, the KJ will heat up alot when it's a loooooong pull ...I just switch off the aircon, and whoooop!...down comes the temp. The aircon radiator sits infront of the water radiator, and becomes so hot, that the warm air is not sufficient enough to cool off the water going through the water radiator. My father in law had the same problem in the earlier years when pulling caravan (with all cars from Ford V6's to Jeep wagoneers)....he gave me the tip, and it works like a charm ... only happened once to me though ...
Author:  rgill [ Thu Feb 18, 2010 10:41 am ]
Post subject:  Re: KJ CRD Overheating
While inquiring about transmission shudder, one trans shop said that the excessive heat from the TC could cause excess transmission heat - which would bleed over to the engine radiator since the coolers are so close to each other.

Just a thought. My CRD overheats going up a freeway pass at speed - no trailer. Never noticed it in the first year of ownership. Seemed to happen after I put an IM tune. Shudder increased also after the tune.
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