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Thread: Slight overheating issue

  1. #1
    That guy!!! Ghostfire's Avatar
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    Default Slight overheating issue

    Anyone have a suggestion on what may be causing my 97 ZJ to be overheating. Open to any and all ideas!

    Thanks guys!

  2. #2
    I am a chapter of one sincitycj's Avatar
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    I'm going to assume, I know dangerous, that you have checked the obvious like coolant level and oil. When it over heats are you driving, at a stop or both, is the ac on or off. Give us as much details as you can so we can help narrow it down.
    Quote Originally Posted by usnavymitchells View Post
    went to google to see if I too was a dumb ass!!! Well actually I am.

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    Free at last... ColoFreeJeeper's Avatar
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    Quote Originally Posted by Ghostfire View Post
    Anyone have a suggestion on what may be causing my 97 ZJ to be overheating. Open to any and all ideas!

    Thanks guys!
    Start with a new thermostat because it's cheap enough. If that doesn't work, let us know. Also, Sin is right. More details.

  4. #4
    Member 19delta's Avatar
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    also try to giggle the water pump pully. if the bearing is wore out it will effect your temp to, and check your radiator cap as well for presure. couln't be as bad as mine was, more calsification and lime blobs in the radiator than coolant!
    "If you don't stand for something, you'll fall for anything"
    quote from movie "sucker punch"

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    Cross your fingers and hope it isn't the radiator. The one for the ZJ I had cost me $500.

  6. #6
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    I just put a 2 row all metal radiator in my 95 4.0 ZJ. Thing ran cool before but the old one was seeping a little so I decided to change it. While changing it out, I noticed it was also beginning to leak trans fluid...


    One thing I found. This isn't an EXACT fit, the lower rad hose fitting is longer than the original radiator. So I had to remove the bolts for the steering box and slide it back enough to drop it in.


    This thing runs REALLY cool compared to the original, and it wasn't running hot to begin with. I'm actually going to have to go to a warmer thermostat, because I don't think the engine is getting warm enough to go into closed loop. Exhaust smells gas rich....

    Bought it from www.radiatorbarn.com and it was $140 shipped to my door... I wanted the 3 row, but they were out of stock and didn't know when they were going to get more.

    Be sure to look forseepage at the waterpump, and all gaskets. Also check all hoses and your heater core.

  7. #7
    That guy!!! Ghostfire's Avatar
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    Awesome u guys ROCK !! I have a 318 v8 it over heated the other day after a short 10(ish) trip and when I got Hm I left I'd running as I put my bambinos car seats in and the ac was on full blast and that's when it over heated. I drained the coolant and filled it up with new coolant (obviously) lol. I haven't over heated since this happened thursday but I have ran a little hot today.

    Along with the things u guys sad I also herd that radiator caps could cause over heating. Have any of u herd of this?

    Btw I take no offence to the statment asking if I checked coolant and oil levels and they r fine.

  8. #8
    Quiet Rage... 93ZJ-Walks's Avatar
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    If the cap is losing pressure then yes it could, also a nice erally cheap thing to do is to get some engine degreaser and clean the front of the engine as well as the side that you can reach.

    I have some serious issues here in el paso with over heating (100+ degrees every day) and just cleaning my block helped out alot. I have to change thermostat and rad cap as well. After those if I am still running hot then I am simply going to cut some vent holes in the hood to let out the heat.

  9. #9
    Got Beer airforce26yrs's Avatar
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    Quote Originally Posted by 93ZJ-Walks View Post
    After those if I am still running hot then I am simply going to cut some vent holes in the hood to let out the heat.
    I hope you ae just kidding???????????
    I'm Mike, make sure you spell it right, because I do not want to get the wrong A$$hole in trouble.

    If you do not have time to do it right the first time, how do you have time do do it over?

    www.jeepforum.com michiganmaveric

  10. #10
    Quiet Rage... 93ZJ-Walks's Avatar
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    Nope. Not kidding at all, going to make sure it looks good on another hood first.

    (use the same principle as the hummv hood)

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