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Unread 11-30-2013, 06:23 PM   #1
schatzzy
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1995 FSJ Cherokee 
 
Join Date: Nov 2013
Location: saint marys, pa
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maybe water pump

was wondering has any one had little heat when at idle to good heat on throttle rad is full i don't see any movement in rad when idleing but rev it it is moves just a little but not like i have seen before and just put new temp switch in and reads really high when running but rad is cold as can be any idea's

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Unread 11-30-2013, 06:25 PM   #2
schatzzy
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1995 grand cherokee 4.0l and idles high like my old 89 f150 used to do if she got hot
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Unread 11-30-2013, 07:22 PM   #3
BIGBADWOLF
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That is what it sounds like. Check water pump impeller
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Unread 12-01-2013, 09:35 AM   #4
schatzzy
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trying thermostat i just had a dumb thought and hoping it is it it maybe stuck closed
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Unread 12-01-2013, 12:08 PM   #5
copmedic309
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Sounds like the thermostat. Flush out your heater core as well
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Unread 12-01-2013, 01:21 PM   #6
BIGBADWOLF
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heater should still work with a stuck thermostat
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Unread 12-02-2013, 06:43 PM   #7
schatzzy
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well still didn't fix it looking like water pump aint pushing coolant very well just didn't want to do it but have too
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Unread 12-02-2013, 09:41 PM   #8
BIGBADWOLF
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Quote:
Originally Posted by schatzzy View Post
well still didn't fix it looking like water pump aint pushing coolant very well just didn't want to do it but have too
Yup I would almost bet the impeller is broken or worn. Heater is not controlled by thermostat...water circulates through heater whether thermostat is open or closed. So if heater ain't putting out warm air and hoses are cold that is usually a bad water pump.
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Unread 12-02-2013, 11:12 PM   #9
schatzzy
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i got more heat when on throttle than idle and when i pulled thermostat i notice that the thermostat has nothing to do with heat i used to different vehicles where the thermostat or does control that i using some of my knowledge but as i can see jeep is not normal lol its crazy stuff hoping heat pipe will unscrew when i get the new water pump
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Unread 12-03-2013, 07:11 AM   #10
BIGBADWOLF
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Quote:
Originally Posted by schatzzy View Post
i got more heat when on throttle than idle

hoping heat pipe will unscrew when i get the new water pump
Sounds like a weak pump. Heater pipe usually comes off easy, a vice helps. Be sure to use thread sealant B/C the pipe has to be in the correct position so you may not get it all that tight. I like to use Permatex indian shellac. but that is just me. Also use sealant on the bolt that goes all the way through the block and into the water jacket.
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Unread 12-03-2013, 09:45 PM   #11
schatzzy
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need a good cleaner i can add to antifreeze cos its cold here and run it for a bit cos i put new pump on it still running warm not over heating but warm enough i just wondering if anti freeze is not getting to the new temp switch i did get it a little cooler but not much so not sure whats going on
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Unread 12-04-2013, 01:40 PM   #12
schatzzy
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here where it running at
2013-12-04_14.09.55.jpg

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Unread 12-05-2013, 08:40 PM   #13
schatzzy
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any body with any idea's for this please
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