Radiator issue...
Thread Starter
Seasoned Member
Joined: Oct 2010
Posts: 348
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From: Central Texas (Round Rock)
Year: 1999
Model: Cherokee
Engine: 4.0
Originally Posted by djb383
With both the t-stat and water pump removed, u'd be surprised how well a garden hose stuck in the t-stat hole will clean/flush the head/block. Again, coolant doesn't turn rusty over night, years of neglect does. If u replace cooling system components all at once, u only have to drain/refill once. Coolant should be checked on a regular/frequent basis.
Thread Starter
Seasoned Member
Joined: Oct 2010
Posts: 348
Likes: 1
From: Central Texas (Round Rock)
Year: 1999
Model: Cherokee
Engine: 4.0
Originally Posted by djb383
With both the t-stat and water pump removed, u'd be surprised how well a garden hose stuck in the t-stat hole will clean/flush the head/block. Again, coolant doesn't turn rusty over night, years of neglect does. If u replace cooling system components all at once, u only have to drain/refill once. Coolant should be checked on a regular/frequent basis.
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
FWIW, if u should start looking at another used vehicle, it's easy to look under 2 caps (oil fill and rad) to get an idea of what maintenance (in general) the PO has/hasn't done.
Thread Starter
Seasoned Member
Joined: Oct 2010
Posts: 348
Likes: 1
From: Central Texas (Round Rock)
Year: 1999
Model: Cherokee
Engine: 4.0
Originally Posted by djb383
FWIW, if u should start looking at another used vehicle, it's easy to look under 2 caps (oil fill and rad) to get an idea of what maintenance (in general) the PO has/hasn't done.
Don't run any stop leak in your cooling system I did the overheating got worse I got up to 280 degrees and still I didn't pop the head but I recently rebuild my 4.0 and the waterjackets in the head were plugged up with the **** so yea hope this helps
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Thread Starter
Seasoned Member
Joined: Oct 2010
Posts: 348
Likes: 1
From: Central Texas (Round Rock)
Year: 1999
Model: Cherokee
Engine: 4.0
Originally Posted by djb383
Not sure what u are seeing, maybe reflections, but those pics show almost sterile cooling system and valve train.
Seasoned Member
Joined: Feb 2011
Posts: 424
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From: Memphis,TN area
Year: 1998
Model: Cherokee
Engine: ERH 4.0L 16 Power Tech
What he said if you don't want to find yourself stranded alongside the road. Replace the belts while you're there. It's cheap insurance.
CF Veteran
Joined: Sep 2010
Posts: 1,992
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From: West Bloomfield,MI
Year: 1996
Model: Cherokee
Engine: 4.0L, CAI, Edelbrock Breather, Optima Yellowtop
Thread Starter
Seasoned Member
Joined: Oct 2010
Posts: 348
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From: Central Texas (Round Rock)
Year: 1999
Model: Cherokee
Engine: 4.0
Originally Posted by waltermitty
What he said if you don't want to find yourself stranded alongside the road. Replace the belts while you're there. It's cheap insurance.
Thread Starter
Seasoned Member
Joined: Oct 2010
Posts: 348
Likes: 1
From: Central Texas (Round Rock)
Year: 1999
Model: Cherokee
Engine: 4.0
Went out and poured 8 bottles of water in the rad.. Leak? I think so.. On the battery side.. Drip drip... So guess I'll be replacing the rad after all...
When does it end!?!?! LOL
When does it end!?!?! LOL
CF Veteran
Joined: Nov 2010
Posts: 2,139
Likes: 1
From: chillicothe, OH
Year: 1991
Model: Cherokee
Engine: 4.0
Originally Posted by djb383
It's a Jeep.....you're just getting started. LOL
Fwiw-if u have to do a rad, save yourself the headache and time, just do it all. Well worth it.


