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1999 Jeep Cherokee overheating

Tiny
BASSFACE95
  • MEMBER
  • 1999 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 109,571 MILES
Jeep grand cherokee limitied 1999. Jeep overheating and I saw anti-freeze leaking around radiator. I replaced radiator and thermostat with gasket. Still overheats and the 2 inch hose that runs from the top of the radiator to the thermostat housing swelled up and split. Also the reserve coolant tank was boiling with steam. Please advise what to do next.
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Sunday, June 1st, 2008 AT 12:51 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Have it block and pressure tested-do the block first to pinpoint a combustion leaking into the cooling system or a gas analyzer to sniff for hydrocarbons at the radiator fill neck.

Pressure test: do not do a pressure test if there's leakage at the headgasket this might cause coolant into the cylinders and lock it up or bend a connecting rod if cranked thereafter. The headgasket should be repaired before doing the pressure test.

If the block and pressure test passes check the following: Thermostat, Pressure test the Rad. Cap, Clogged radiator, Fan clutch, Radiator electrical fan, collaspe hoses, water pump.
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Sunday, June 1st, 2008 AT 1:52 PM

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