jeepdoggydogB Posted July 15, 2009 Posted July 15, 2009 I replaced my radiator and water pump a few months ago when the temp got hot at freeway speeds, now she runs nice and cool on the freeway, but when I exit the freeway and idle she is starting to get towards 230. I noticed the A/C fan going on, so I am suspecting the problem is the fan clutch? :dunno: I went ahead and bought the ZJ HD 4.0 liter fan clutch without the max/cool option any other ideas? Thanks!
bigd44889 Posted July 15, 2009 Posted July 15, 2009 mine did that till i fixed the eletric fan then was fine thermostat could do it to
Geonovast Posted July 15, 2009 Posted July 15, 2009 My first 88 did that when it was deceptively low on coolant. Try burping the system again, there may be trapped air.
HOrnbrod Posted July 15, 2009 Posted July 15, 2009 Joe, Did this running hot start about the same time your muffler got clogged? Chances are if the muffler was clogged, the cat is too and can cause you to run hot.
ICEBOX Posted July 15, 2009 Posted July 15, 2009 do yuo have a fan schroud ? I see slot out there that do not have them .
jeepdoggydogB Posted July 15, 2009 Author Posted July 15, 2009 Thanks for the replies, it is a 1991 and has the fan shroud, there doesn't appear to be air in the system with the overlow bottle at good levels. Don, that is about when I noticed the hot temps. If the cat is clogged I didn't think the truck would run or run really bad?
jeep_freek88 Posted July 15, 2009 Posted July 15, 2009 do yuo have a fan schroud ? I see slot out there that do not have them . I don't have a shroud would that make the engine run cooler with a shroud?? :???:
Geonovast Posted July 15, 2009 Posted July 15, 2009 Yes, the shroud is for more than protecting your hands while working on a running motor. They help direct the air where it's supposed to go.
ICEBOX Posted July 15, 2009 Posted July 15, 2009 I had to do a dubble take on Geonovast post ! lol. i read the schroud is MORE for protecting you finger ! LOL . but yeah what he said . it's very importen.. excuse any misspellings. ( i sux at spelling) sry
jeepdoggydogB Posted July 16, 2009 Author Posted July 16, 2009 Appreciate the responses so far, so I am buying a new cat, muffler, and fan clutch. I will let folks know this weekend if it helps.
HOrnbrod Posted July 16, 2009 Posted July 16, 2009 Appreciate the responses so far, so I am buying a new cat, muffler, and fan clutch. I will let folks know this weekend if it helps. I had a clogged cat in my pre-stroker MJ. It would overheat going up long grades and in traffic. Hopefully a new one will cure your problem.
Pete M Posted July 16, 2009 Posted July 16, 2009 excuse any misspellings. ( i sux at spelling) sry Me too. Firefox can help you out with that. :thumbsup:
jeepdoggydogB Posted July 16, 2009 Author Posted July 16, 2009 Appreciate the responses so far, so I am buying a new cat, muffler, and fan clutch. I will let folks know this weekend if it helps. I had a clogged cat in my pre-stroker MJ. It would overheat going up long grades and in traffic. Hopefully a new one will cure your problem. Thanks Don, I got a good deal on the 50 State legal Magnaflow and my smog inspection is up next month so I figured why not just replace anyway.
ICEBOX Posted July 16, 2009 Posted July 16, 2009 You know TN is a great state. 1) no smog inspection 2) no car inspection 3) tn is a great state I use to live in CA and NJ. wow very tuff laws . I feel so blessed now :)
jeepdoggydogB Posted July 17, 2009 Author Posted July 17, 2009 You know TN is a great state.1) no smog inspection 2) no car inspection 3) tn is a great state I use to live in CA and NJ. wow very tuff laws . I feel so blessed now :) You are way blessed, my wife and I are looking at retiring to horse country somewhere in the next 10 years. Right now central Texas is in the top running (my family originally came from Texas), but there are wonderful horse properties all over the Southern Uniited States that we are eyeing that are blessed. :cheers:
jeepdoggydogB Posted July 18, 2009 Author Posted July 18, 2009 Appreciate the responses so far, so I am buying a new cat, muffler, and fan clutch. I will let folks know this weekend if it helps. I had a clogged cat in my pre-stroker MJ. It would overheat going up long grades and in traffic. Hopefully a new one will cure your problem. Thanks Don, I got a good deal on the 50 State legal Magnaflow and my smog inspection is up next month so I figured why not just replace anyway. Replaced everything and now I have power and quiet, but the darn thing still got hot at idle, replaced the thermostat and bingo all is good! :cheers: On another note I just replaced the thermostat/waterpump, and radiator in January so I am assuming cheap Carquest/Kragen Chinese made thermostat? Where do folks buy from to avoid such crappy made things?
HOrnbrod Posted July 18, 2009 Posted July 18, 2009 The thermostat is one item I always get from the dealer. :cheers:
jeepdoggydogB Posted July 18, 2009 Author Posted July 18, 2009 The thermostat is one item I always get from the dealer. :cheers:Thanks Don, no more cheap junk for me with lifetime warranty's! :cheers:
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