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Leaky thermostat housing ?!

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Old Feb 14, 2013 | 10:18 PM
  #1  
wanna-be-a-wheeler's Avatar
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From: Indiana
Year: 1996
Model: Cherokee
Engine: 4.0 HO
Default Leaky thermostat housing ?!

Someone save me . Thermostat housing won't stop leaking coming from bottom bolt have tried new gasket three times any tips ?
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Old Feb 14, 2013 | 10:36 PM
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caged's Avatar
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From: Northern Ontario, Canada
Year: 1990, 1999, 2000
Model: Cherokee
Engine: 4.0
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remove and clean all hardened gasket with scraper and or wire brush.

then use a new gasket and add some RTV on both sides of gasket and bolt it back up. don't start it for at least half hour to give time for the RTV to dry.

if that doesn't work, maybe you have a metal problem of some sorts, either a scratched/gouged surface or deteriorated waterpump bolt jacket.
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Old Feb 14, 2013 | 10:41 PM
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wanna-be-a-wheeler's Avatar
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Year: 1996
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Okay . Thanks !
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Old Feb 15, 2013 | 12:31 AM
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highmileage's Avatar
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From: Bakersfield CA
Year: 1990
Model: Cherokee (XJ)
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had this problem...... housing was warped. Clean housing very well and on a very flat surface with some medium grit sand paper make it flat again. If you are good you can use a large flat file instead. Only other thing (other than being dirty still) is a crack in the housing.
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