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  1. #16
    Join Date
    May 2010
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    New Caney, TX
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    Default Re: 1998 Hitting 233 degrees

    Mine was starting to run warm for a while. Went away when I removed the A/C condenser in front of the rad. Looked ok while looking at it in the jeep, but once removed i could hold it up in front of the sun and see just how clogged it really was.

  2. #17
    Join Date
    Mar 2009
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    Katy, Texas
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    Default Re: 1998 Hitting 233 degrees

    Thanks Jim, forgot about that one...

    Here is what has been done;

    1) Change of radiator, 3 times. Currently using a 2 row all aluminum Eagle radiator
    2) Water pump less than a year old.
    3) 160 degree thermostat, it was an experiment.
    4) Replaced heater core
    5) All hoses are a year or less old.
    6) Grand Cherokee HD fan clutch, less than a year old.
    7) AW4 has been disconnected from the radiator.
    8) 4.0L Rebuilt, completely different engine including head and exhaust.
    9) Sensors all replaced with Mopar parts
    10) AW4 was rebuilt 1.5 years ago.
    11) Catalytic converter replaced about 6 months ago along with muffler.
    12) Radiator cap 16 psi (several of them)
    13) Replaced A/C condenser

  3. #18
    Join Date
    Mar 2012
    Location
    Michigan, 48657
    Posts
    470
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    Default

    What do your fuel trims look like?
    Quote Originally Posted by CherokeeCountry
    I can't cook though. Unless you count the few seconds where I allowed Dylan to saute...

  4. #19
    Join Date
    Jun 2010
    Location
    Conroe
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    Default Re: 1998 Hitting 233 degrees

    His fuel trims are like mine as I can tell via txting. I think you should try a stock tstat. the only items different from my jeep engine rebuild and yours is

    1. mine stock tstat temp/stock radiator. His 160 and the nice radiator
    2. mine stock cam. his is the stroker cam
    3. I'm .030 over and he is .060 over
    Trailer Queen Jeep Member (Hoping Bigjim350 will show me how to wheel since 2011)
    Now charging a shop fee!

  5. #20
    Join Date
    Feb 2010
    Location
    washington
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    8

    Default Re: 1998 Hitting 233 degrees

    when you say the motor is new or rebiult is it the same block becouse you had the same problem before. You my have a peace of scale from the motor block stuck inside bloking some coolent .it my be around one of cyl. wall or up in the head. Sometimes you can take a infred hand thermomiter and run it over and around the motor and you may find a hot spot.That would give you a place to start looking.

  6. #21
    Join Date
    Jun 2010
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    Conroe
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    Default Re: 1998 Hitting 233 degrees

    Quote Originally Posted by gary63 View Post
    when you say the motor is new or rebiult is it the same block becouse you had the same problem before. You my have a peace of scale from the motor block stuck inside bloking some coolent .it my be around one of cyl. wall or up in the head. Sometimes you can take a infred hand thermomiter and run it over and around the motor and you may find a hot spot.That would give you a place to start looking.
    nope different block and head. They were hot tanked & cleaned by the same guy who did mine
    Trailer Queen Jeep Member (Hoping Bigjim350 will show me how to wheel since 2011)
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  7. #22
    Join Date
    Mar 2009
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    Katy, Texas
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    Default Re: 1998 Hitting 233 degrees

    Quote Originally Posted by 89Laredo View Post
    What do your fuel trims look like?
    It varies all over, what am I looking for?

    I saw it as low as -3% and as high as 9%

    Long Term is usually 7%

  8. #23
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    Mar 2012
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    Michigan, 48657
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    Default

    That's different than my renix... lol
    (Mine is a number between 0-256)
    I'll see what I can find later.
    Lean would make it run hot. New oxygen sensor?
    Quote Originally Posted by CherokeeCountry
    I can't cook though. Unless you count the few seconds where I allowed Dylan to saute...

  9. #24
    Join Date
    Mar 2009
    Location
    Katy, Texas
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    Default Re: 1998 Hitting 233 degrees

    Quote Originally Posted by 89Laredo View Post
    That's different than my renix... lol
    (Mine is a number between 0-256)
    I'll see what I can find later.
    Lean would make it run hot. New oxygen sensor?
    9) Sensors all replaced with Mopar parts

  10. #25
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    Mar 2012
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    Michigan, 48657
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    Default

    Manifold vacuum at hot idle?
    Quote Originally Posted by CherokeeCountry
    I can't cook though. Unless you count the few seconds where I allowed Dylan to saute...

  11. #26
    Join Date
    Jun 2010
    Location
    Conroe
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    Default Re: 1998 Hitting 233 degrees

    Quote Originally Posted by 89Laredo View Post
    Manifold vacuum at hot idle?
    uhhh ya they all are, and i have the same 99+ intake he has and have monitored the temp in the manifold
    Trailer Queen Jeep Member (Hoping Bigjim350 will show me how to wheel since 2011)
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  12. #27
    Join Date
    Mar 2009
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    Default Re: 1998 Hitting 233 degrees

    Quote Originally Posted by 89Laredo View Post
    Manifold vacuum at hot idle?
    15 psi cold almost 18 psi hot (if A/C is off)

  13. #28
    Join Date
    Feb 2010
    Location
    washington
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    Default Re: 1998 Hitting 233 degrees

    Quote Originally Posted by msmoorenburg View Post
    nope different block and head. They were hot tanked & cleaned by the same guy who did mine
    Hot tanking won't remove a piece of casting that may have come loose.I had that happen to me onetime. Changed everything twis fushed not it would get hot when running at high rpm like on the highway. took a therm. find one spot hotter than other in the same area.Then took a scope and looked in from a freezplug and got it out no more over heating.Not saying that is it but he had the same thing before the rebiuld.

  14. #29
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    Feb 2010
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    washington
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    Default Re: 1998 Hitting 233 degrees

    sorry didn't see differnt block and head.

  15. #30
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    Default Re: 1998 Hitting 233 degrees

    Quote Originally Posted by gary63 View Post
    sorry didn't see differnt block and head.
    no worries it was like i said hot tanked with new freeze plugs and blasted


    looked like this (sorry no pics not painted)



    Trailer Queen Jeep Member (Hoping Bigjim350 will show me how to wheel since 2011)
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