Water Pump Died...New Engine Needed?
01-16-2016, 08:20 AM
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Water Pump Died...New Engine Needed?
My pump died & it ran hot several times as I limped home, adding water along the way. I now have low compression in cylinders 1 & 2, possibly more. Cylinder 1 came back at 30, I don't remember 2, & they stopped testing after that. Do I need a new engine, head gasket, rings...? I had the engine rebuilt 2-3 years & would rather not do it again.
01-16-2016, 10:06 AM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
A tow bill woulda been a better option..............
01-16-2016, 11:09 AM
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Year: 1998
Model: Cherokee
Engine: 4.0
Probably all of the above, sounds like you destroyed it. I would pull it, tear into it, and evaluate from there, but it sounds like your screwed. Time to look for a JY replacement.
P.S. Don't run the new one with a "dead" water pump. Adding water won't help if it's not circulating through the motor.
P.S. Don't run the new one with a "dead" water pump. Adding water won't help if it's not circulating through the motor.
01-16-2016, 03:04 PM
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Perhaps I should add that I'm still driving it & I'm the only one who can tell a difference in the idle. Aside from a slightly rough idle & the CEL being on, there's really nothing noticeably wrong with it.
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01-16-2016, 07:00 PM
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Year: 1990
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Engine: 4.0
Throw a water pump on it, some Restore in the crankcase and go for broke then.
01-16-2016, 07:02 PM
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01-16-2016, 09:19 PM
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01-17-2016, 01:01 AM
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Year: 1995
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Engine: 4.0L HO
If you're having misfires and low compression your best bet is to pull the head, if it was severely overheated a blown head gasket (given that your issues are with 2 cylinders next to each other a head gasket failure between them would be prime suspect) or burn valves are a real possibility.
01-17-2016, 06:50 AM
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It's sounding more & more that an upper rebuild would fix the problem. The shop suggested putting in a used engine, so I wanted to figure out if I needed to find a new shop.
01-18-2016, 10:44 AM
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Engine: 4.0 I6
If you are mechanically inclined, pull the head and see whats what. New headstuds and gasket arent that expensive.
If you are not mechanically inclined, probably just swap in a good used motor with a TUPY cast head (avoid the 0331 cast head from the 99+ XJ).
Freshen up the gaskets before you install the motor (especially oil pan, oil filter adapter, valve cover, etc).
If you are not mechanically inclined, probably just swap in a good used motor with a TUPY cast head (avoid the 0331 cast head from the 99+ XJ).
Freshen up the gaskets before you install the motor (especially oil pan, oil filter adapter, valve cover, etc).