Wrangler has poor heat and runs cool - Page 2 - JeepForum.com

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post #16 of 51 Old 01-04-2008, 07:14 PM Thread Starter
RednekWrangler
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I blocked half the radiator, still no heat and still running cool.

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post #17 of 51 Old 01-04-2008, 07:17 PM
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Have you tested the actual temp of the fluid in the rad??

Is it possible you have a bad gauge AND a heater core issue????


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post #18 of 51 Old 01-04-2008, 07:30 PM
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UP here in the great white north I run a 195 deg. t-stat and a full grill cover this is the only way the guage will come up to the 90 deg.mark (Cdn.model this is 194 F.)
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post #19 of 51 Old 01-04-2008, 07:40 PM Thread Starter
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Upper and lower radiator hoses are cool to the touch. And this problem happened instantly. If you turn the engine off the upper hose starts to get hot and you can turn the key on and see the gauge get hotter. Do you you think it's a possible circulation problem? Water pump or radiator? I would think it would run hot if it was. The temps here are in the single digits wich may keep the engine cool. A week ago I had good heat in the the same cold temps.
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post #20 of 51 Old 01-04-2008, 08:27 PM
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Something is plugged OR your waterpump took a crap. Your gonna have to pull everything apart to flush stuff so you may as well pull the pump off and check it out while your at it.


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post #21 of 51 Old 01-05-2008, 02:07 AM
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hummmm, the master jeep god at advance auto told me they came with 180's and that's what i always ran in my 2.5 b/c of what he said....

guess it's time to see what i put in my 4.0 a couple months ago... lol

'89 Wrangler, 4.0/AW4, 106" Wheelbase, SOA, custom XJ packs, 2" Body. Front High Pinion Dana 44 w/yukon super-joints, chromo inners and outers, and a Lincoln Locker. Rear Dana 60 w/Yukon 1.5" 35 Spline chomo shafts and detroit locker. 5.38 Yukon Gears. Hydro-Assist, 39.5x18" Boggers on 15x12 RockKrawler's w/ 2.75" of backspacing. Comp cut, tube fenders, custom bumpers and rock sliders, fuel cell, CB, Stewart Warner Gauges, SmittyBilt XRC8 Winch, 140 Amp CS-144 Alternator, Electric Fan, and a cooler of beer. 3897 lbs

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post #22 of 51 Old 01-05-2008, 06:03 AM
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Quote:
Originally Posted by Big-n-Broke-YJ
hummmm, the master jeep god at advance auto told me they came with 180's and that's what i always ran in my 2.5 b/c of what he said....

guess it's time to see what i put in my 4.0 a couple months ago... lol

YOu got one of them too LOL, I thought my AA store was the only one. Mine told me I have a TJ


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post #23 of 51 Old 01-05-2008, 09:47 AM
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If his temp only goes up to 125 then engine is not getting any coolant. I would remove the themostat, start the engine and watch the coolant in the radiator to make sure the water pump is circulating. if coolant is circulating then put a new stat back in and drive it to get it up to temp. The new stat you have may be bad.
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post #24 of 51 Old 01-05-2008, 11:33 AM
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Quote:
Originally Posted by workn4livn
If his temp only goes up to 125 then engine is not getting any coolant. I would remove the themostat, start the engine and watch the coolant in the radiator to make sure the water pump is circulating. if coolant is circulating then put a new stat back in and drive it to get it up to temp. The new stat you have may be bad.
If his engine was not getting any coolant then the engine would over heat. When a water pump goes out the engine over heats not cool down. It is possible that you got a bad stat. I've had that happen before. You said the hoses don't heat up until you shut down. Does the radiator get hot? This is an odd problem unless the radiator is blocked but the engine would then over heat. Does the engine seem to be running alright? Loss of power or anything?

Until They All Come Home!
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post #25 of 51 Old 01-05-2008, 03:49 PM Thread Starter
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I have heat! The new thermostat was bad. First time I ever got a bad one. Thanks for the input!
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post #26 of 51 Old 01-05-2008, 04:21 PM
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Glad you got that fixed. It is not uncommon to get a bad Tstat.


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post #27 of 51 Old 01-05-2008, 05:01 PM
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It just makes sense that is was a bad tstat. If the tstat was stuck open even slightly then coolant would continue to flow threw it not giving the engine a chance to get up to temperature. When you shut the engine off, the temperature would begin to climb since the coolant would no longer be moved via the water pump. I'm glad you solved your problem and that is was a cheap fix.

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post #28 of 51 Old 01-05-2008, 05:02 PM
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i'm ecstatic to hear you got it fixed b/c as bad as the problem was annoying you, it was truly ticking me off that your problem had us ALL stumped.

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post #29 of 51 Old 01-05-2008, 05:57 PM
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Quote:
Originally Posted by Big-n-Broke-YJ
i'm ecstatic to hear you got it fixed b/c as bad as the problem was annoying you, it was truly ticking me off that your problem had us ALL stumped.

I was pulling my hair out trying to think of what could be causing this.


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Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
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post #30 of 51 Old 01-05-2008, 10:29 PM
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I have been following this post because I have the same problem! Jeep gauge barley moves... I replaced tstat in summer and it was OK but now that it is colder I have very little heat! Looks like it's time to hit Napa for another tstat! Thanks for the info!!!
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