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  #1  
Old September 1st, 2009, 15:45
rookcherokee rookcherokee is offline
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Exclamation Jeep creeping up to 220*. Need help

So recently the heep has been creeping up to 220* while driving for about 30 minutes or so but never really goes further and overheats. Any reason for this to be happening? I just don't want this to cause a problem for me in the future. Anything I can do to not have this happen and the keep the temp down? Any help would be great! Thanks!
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Old September 1st, 2009, 16:00
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ehall ehall is offline
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Re: Jeep creeping up to 220*. Need help

when was the last time you changed coolant
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Old September 1st, 2009, 16:10
rookcherokee rookcherokee is offline
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Re: Jeep creeping up to 220*. Need help

Quote:
Originally Posted by ehall View Post
when was the last time you changed coolant
Just about a week ago actually. Was thinking of converting to a dual electric set up, anyone know of a good write up for this? Thanks
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Old September 1st, 2009, 16:13
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winkosmosis winkosmosis is offline
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Re: Jeep creeping up to 220*. Need help

Mine runs at 227 in traffic according to Scangauge! Isn't that normal?
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Old September 1st, 2009, 16:43
joe_peters joe_peters is offline
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Re: Jeep creeping up to 220*. Need help

What kind of driving? Stop and go? Highway speeds?

Year? Engine? Trans?
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  #6  
Old September 1st, 2009, 16:45
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MaxxXJ MaxxXJ is offline
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Re: Jeep creeping up to 220*. Need help

when was the last time you changed your thermostat? and or water pump... could be one of those 2...
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  #7  
Old September 1st, 2009, 17:28
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Johnnie Walker Johnnie Walker is offline
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Re: Jeep creeping up to 220*. Need help

Have you checked to see if your stock e-fan was turning on? CTS could be on the fritz, wiring, etc. Try turning on your A/C and or defreost and see if the fan turns on at all.
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  #8  
Old September 1st, 2009, 17:43
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93gc40 93gc40 is offline
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Re: Jeep creeping up to 220*. Need help

Your temps are running 100+ outside right now correct? Considering where you are and the time of year, high side of normal. I don't think you have a major problem but check you hoses, check your fan clutch, check the electric fan.. Service the system, Change your coolant, TStat 190deg, and radiator cap.
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  #9  
Old September 1st, 2009, 18:25
TacticalFats TacticalFats is offline
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Re: Jeep creeping up to 220*. Need help

If it's over 80, it drives between 200-210. Below 80, it's 190-20.

In traffic/idling, it gets up there, esp when it's warm out. I've seen 226 on scangauge as well.
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Old September 1st, 2009, 20:06
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ehall ehall is offline
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Re: Jeep creeping up to 220*. Need help

If it just started after coolant change I suspect the system hasn't bled itself yet
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Old September 1st, 2009, 20:39
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Re: Jeep creeping up to 220*. Need help

If it isn't boiling over, you are probably fine. Temp gauges are notoriously inacurate. My stroker has always read in the 220 range and has never boiled over. Just make sure you keep good radiator cap (18lb) on it. A radiator cap should be changed about every two years. Flush the coolant at the same time.
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  #12  
Old September 2nd, 2009, 14:35
joe_peters joe_peters is offline
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Re: Jeep creeping up to 220*. Need help

You could have some air trapped in the cooling system--especially if it is a closed system (never did see an answer to the questions on year/engine).

If it only creeps up at idle/stop and go, and the system is purged of all air, then I would suspect the fan clutch.
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  #13  
Old September 2nd, 2009, 17:22
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Re: Jeep creeping up to 220*. Need help

My jeep does this too, but then drops back down to 210. Just recently though after driving it, the radiator cap loosens up and coolent spills from it. Should i just change my cap to fix it?
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  #14  
Old September 2nd, 2009, 20:14
joe_peters joe_peters is offline
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Re: Jeep creeping up to 220*. Need help

Quote:
Originally Posted by jeepman19 View Post
My jeep does this too, but then drops back down to 210. Just recently though after driving it, the radiator cap loosens up and coolent spills from it. Should i just change my cap to fix it?

It really, really, really is necessary for posters to give their year/engine/trans, and any other info that might impact a situation.

Open or closed system?
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  #15  
Old September 2nd, 2009, 21:13
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hightime81 hightime81 is offline
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Re: Jeep creeping up to 220*. Need help

threadjack
hey Joe! how do you like those 19# injectors? i need to change mine out and have a line on some cheap 19# injectors for my 4.0 (93, Auto, 113K). i have heard rumors that they would lean the non-renix 4.0's out some. or is yours a renix?
/threadjack

cheers!
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