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1992 jeep Cherokee over heating

Discussion in 'Wrangler YJ (1986-1995)' started by Deerfan44, Jun 23, 2019.

  1. Jun 23, 2019 at 12:43 PM
    #1
    Deerfan44

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    Deerfan44 [OP] New Member

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    I have a 1992 Jeep Cherokee It was running about 195 at idle I went off roading it got up to 230 mainly sitting idle in line waiting. I brought it home put a new water pump new thermostat housing took the thermostat completely out bypassed the heater core flushed out the radiator put all new antifreeze in and it still runs 195 at an idol with no thermostat so im afraid it's gonna run 230 or more trailling again why is it getting hot all my fans seem to be working good
     
    Deerfan44, Jun 23, 2019
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  2. Jun 23, 2019 at 12:57 PM
    #2
    aggrex

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    aggrex Well-Known Member

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    Welcome @Deerfan44 any debris or winch or accessories reducing airflow up front? Aging radiator may not be leaking but could have clogged passages. Just tossing a few ideas out there.
     
    aggrex, Jun 23, 2019
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  3. Jun 23, 2019 at 1:07 PM
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    Deerfan44

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    Deerfan44 [OP] New Member

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    Nothing blocking in front, I was thinking maybe radiator myself........ I may just have to do that
     
    Deerfan44, Jun 23, 2019
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  4. Jun 23, 2019 at 1:09 PM
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    Awrench

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    Awrench Well-Known Member

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    lets flush and back flush the heater core, replace those hoses.
    Replace thermostat, 195 is called for.

    Is this an elec or mechanical cooling fan? and I believe it was engine driven.
    But 1992 has been awhile.
    Are all the shrouds in place?
     
    Awrench, Jun 23, 2019
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  5. Jun 23, 2019 at 1:22 PM
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    Deerfan44

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    Deerfan44 [OP] New Member

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    It has electric and mechanical fans, they both work
     
    Deerfan44, Jun 23, 2019
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  6. Jun 23, 2019 at 1:51 PM
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    Awrench

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    Awrench Well-Known Member

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    do you have AC?

    wITH shroud intact, elec fans coming on @190 deg, correct thermostat, heater core connected, correct Water pump, there is 2 available* - look at old pump and compare vanes direction to new unit. Yeah it not always fast easy. Sounds like a clogged radiator.

    *this is what part professionals do - there was a reverse flow used, when and why IDR - there was a R stamped on the impellar.
     
    Awrench, Jun 23, 2019
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  7. Jun 23, 2019 at 2:06 PM
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    Prerunner1982

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    Prerunner1982 Well-Known Member

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    IIRC the electric fan doesn't kick on until abt 213° or when the AC is on.
     
    Prerunner1982, Jun 23, 2019
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  8. Jun 23, 2019 at 4:56 PM
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    Jim Beam

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    Jim Beam Well-Known Member

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    It is probably a bad fan clutch, For sure put that thermostat back in. I always like to drill a small 3/32" hole in the thermostat housing so air can pass thru at the first startup after any cooling system work.
     
    Jim Beam, Jun 23, 2019
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  9. Jun 24, 2019 at 5:06 AM
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    Awrench

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    Awrench Well-Known Member

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    old old school trick - when installing T'stat prop the valve open with an aspirin*, this will help bleeding and shortly dissolve.

    *any thing tic tac, aleve, etc
     
    Awrench, Jun 24, 2019
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  10. Jun 25, 2019 at 4:22 AM
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    Deerfan44

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    Deerfan44 [OP] New Member

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    1992 jeep Cherokee
    4 inch lift 33 inch tires
    Put a new radiator in and it's fixed, temp stays at 150 for an hour of running. Now to put thermostat back in. Thanks for all the help peeps
     
    Deerfan44, Jun 25, 2019
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    aggrex likes this.
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