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29-03-2015
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Established Member
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Join Date: Feb 2015
Location: nsw
Age: 32
Posts: 213 What Jeep do I drive?: XJ
Likes: 0
Liked 46 Times in 34 Posts
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Thanks it ended up being a crappy radiator cap, shes cool as now
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1996 White XJ Cherokee Sport Auto i6 4.0l HP
Maxxis MA751
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29-03-2015
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Full Flexer
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Join Date: Oct 2008
Location: Gippsland Vic
Posts: 1,110 What Jeep do I drive?: WH
Likes: 11
Liked 98 Times in 67 Posts
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Quote:
Originally Posted by rustynuts
All Cherokee's get hot in the engine bay. Vents will help lower under bonnet temps at low speeds as they allow hot air to escape but can suck air in at high speeds. They are not a fix for coolant overheating.
If you are not boiling and the ecu shuts the engine down; you probably have a dodgy sensor. There is one on the thermostat housing for the gauge and another for the ecu. AFAIK the ecu one is near the back of the head.
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On the pre-updates I believe it is actually the opposite, the one at the rear of the head is for the gauge and the one at the front is for the ECU/thermo fan.
Temperature gauge diagnosis
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31-03-2015
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Established Member
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Join Date: Feb 2012
Posts: 100 What Jeep do I drive?: XJ
Likes: 7
Liked 19 Times in 11 Posts
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Quote:
Originally Posted by kyphonii
Thought,
If you running on the beach in high range and working the convert then you would be adding a lot of heat to the radiator.
My auto temp guage, in low range, runs well under 100 degrees.
I have never seen high auto temp when in low range in my XJ.
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^^^ I like to add a +1 to this.
I have always noticed temps rose a lot harder and faster in 4wd high range. I started using low range, and noticed temps stayed lower for a lot longer, and generally more stable. Also noticed in lowrange, heaps more power as soon as you push down the pedal, and fuel consumption is better as well due to generally being at lower revs. It just idles along nicely in 3rd or 4th on the tracks i'm on.
My guess was that in high range, theres a lot more stress on the gearbox, its working a lot harder, and therefor getting hotter and quicker, transferring that heat to the radiator.
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03-11-2015
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I just registered
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Join Date: Nov 2015
Posts: 16 What Jeep do I drive?: CJ
Likes: 0
Thanked 2 Times in 1 Post
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hi guys ive just bought an xj & its fine on the road but when i went on the beach it got hot in the soft stuff didnt desperately overheat there was no boil over but it did shut down from what ive been reading here its a faulty cps i also looked on ebay & found an all alli rad that claims 30% better cooling has any body had any experience with these rads
cheers ian
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03-11-2015
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MonsterMoose
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Join Date: Nov 2003
Location: Brisbane, Southside
Age: 51
Posts: 10,539 What Jeep do I drive?: WK2
Likes: 369
Liked 1,110 Times in 691 Posts
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Quote:
Originally Posted by iancj10
hi guys ive just bought an xj & its fine on the road but when i went on the beach it got hot in the soft stuff didnt desperately overheat there was no boil over but it did shut down from what ive been reading here its a faulty cps i also looked on ebay & found an all alli rad that claims 30% better cooling has any body had any experience with these rads
cheers ian
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Well if you've just bought it why not verify everything is working correctly first? Ensure the clutch is ok (most likely not), ensure that the system is clean, chemical flush, reverse flushed etc including ensuring the air path is clear and clean.
Were you in low range when on the beach?
Having the trans cooler in the radiator still connected also doesn't help things.
IMHO the above will be more beneficial to do first before throwing loads of cash at a part that may not be at fault....
__________________
JJ
Do it once, Do it right!
2014 WK2 Overland
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03-11-2015
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MonsterMoose
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Join Date: Nov 2003
Location: Brisbane, Southside
Age: 51
Posts: 10,539 What Jeep do I drive?: WK2
Likes: 369
Liked 1,110 Times in 691 Posts
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Quote:
Originally Posted by rustynuts
If you are not boiling and the ecu shuts the engine down; you probably have a dodgy sensor. There is one on the thermostat housing for the gauge and another for the ecu. AFAIK the ecu one is near the back of the head.
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The other way around rusty.....
__________________
JJ
Do it once, Do it right!
2014 WK2 Overland
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03-11-2015
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RubiconSlammer
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Join Date: May 2011
Location: Ipswich, Brisbane.
Posts: 1,250 What Jeep do I drive?: ZJ
Likes: 115
Liked 281 Times in 182 Posts
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Quote:
Originally Posted by iancj10
i also looked on ebay & found an all alli rad that claims 30% better cooling has any body had any experience with these rads
cheers ian
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I got one from ASI and very pleased with it. Temps haven't gone over about 102*. Beware, the one I have is for a LHD and requires modding the shroud if you have one and trans heater on the other side.. I believe you can get a RHD one if you look around.
__________________
'98 XJ (Deceased)
'04 KJ 2.4 L petrol(sold)
'98 ZJ current restoration project
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