sludgy material in radiator
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Joined: Dec 2011
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Originally Posted by Trev1006
I agree, jeep neglect like that boarderlines on criminal, mine gets drained and flushed every year on all my vehicles. They say coolant is good for 100,000 miles. So I think some people don't remove the cap untill the day it hits 100,000 miles. And mixing coolants wont do that, ive mixed all kinds. Even used dex-cool in a pinch. Now mixing different types of trans fluid can get ugly.
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From: Montpelier, Ohio
Year: 92
Engine: 4.0
Originally Posted by silversport00
Jeep neglect? I check my stuff every week, clearly something went wrong and it happened one day. Jeep neglect would be not doing anything at all. Posting a picture on a forum is more then what most people do
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From: Montpelier, Ohio
Year: 92
Engine: 4.0
Originally Posted by silversport00
Yea I flushed out the radiator I'm just waiting to see if the sludge returns
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Joined: Feb 2010
Posts: 174
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From: Ohio
Year: 2000
Model: Cherokee
Engine: 4.0L
If you have been regularly servicing your radiator, and the sludge is a brand new problem, then, you'll want to start looking for signs of a fracture in the head...loss of oil pressure, unexplained loss of coolant, visible coolant in oil, etc. Search "0331" on this forum for lots of info on what you might be up against. This one is really good info...
https://www.cherokeeforum.com/f2/00-...erview-118922/
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Joined: Jan 2012
Posts: 128
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From: Tupelo, Mississippi
Year: 1998
Model: Cherokee
Mine was like that. It turns out it was full of some stop leak stuff from the PO. Flushed it and put a new water pump on and everything was normal after that. Even ran cooler
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Joined: Nov 2009
Posts: 8,172
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From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Seems like all the various colors/brands of coolants have been compatible for quite some time now. What's in that pic far from happens overnight.
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Joined: Mar 2011
Posts: 2,570
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From: California
Year: 1992
Model: Cherokee
Engine: 4.0 HO
x2, it does look like that stop leak ****. Why anyone would put that crap in their cooling system is beyond me.
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Originally Posted by jamurrin
The picture, to me, doesn't look like an oil sludge...but is hard to tell for sure. If you or a previous owner have mixed different coolant types, it can create a sludge like that...I bought a used S-10 a few years ago with crap that looked like that in it. I flushed it pretty well, then drove it to work, draining and refilling clean water every day for about 2 weeks before the water I drained seems clean.
If you have been regularly servicing your radiator, and the sludge is a brand new problem, then, you'll want to start looking for signs of a fracture in the head...loss of oil pressure, unexplained loss of coolant, visible coolant in oil, etc. Search "0331" on this forum for lots of info on what you might be up against. This one is really good info...
https://www.cherokeeforum.com/f2/00-...erview-118922/
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