JT4x4
The Mud Pit => Wrenching => Topic started by: CnoteTJ on February 28, 2008, 02:02:18 PM
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My buddy started up his XJ this morning and immediately got the check engine light. After allowing it to warm up for 5 minutes he came back and it was already starting to overheat! Anyone have any experience with this, also, anyone have a code reader so we dont have to limp-it to advance auto! Preesh the help homies.
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my bet would be the electric fans not spinning, not sure why it would have triggered the check engine light instantly though.
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Could be a bad thermostat.
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i was thinking thermostat, i just want to get more opinions if thats not it and the check engine light is throwing me off
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not to be too obvious, but to my knowledge XJ's have mechnical fans (at least mine did 2000) I had similiar problems. how hot did it get. fluid level good? try pulling the thermo and running it. does it still overheat? I upgraded to this: CSF heavy duty 3-row for $165.
(http://www.radiatorbarn.com/s7.asp?ac=Y&year=2000&make=JEEP&model=CHEROKEE&submodel=XJ&engine_size=L6%2C4.0L%2C242ci)
I loved it, never had problems again. Mine would overheat anytime there wasn't air moving over the radiator. I tried everything, but finally it came down to the radiator. EASY INSTALL.
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i would check the oil alos with the cold. if its too thick, not lubricating properly, if there is any. friction =heat.
how deo sthe engine sound when running? and ticking, or stuttering?
other than that i echo what reg posted.
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have an OBD11 at shop. The thermostat is probably stuck shut, but I do recommend a heavy duty radiator.
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ended up being the thermostat was toast, so he upgraded to a 180 since it was a 195. thanks for all the extra ideas guys
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glad it got figured out.