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Old 09-15-2007, 06:12 PM   #1
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help boiling coolant

my jeep has not overheated yet but coolant is getting pushed back into the resivoir and then the engine makes a gurgling noise once i shut it off. it doesn't do it every time but i noticed the temp has been bouncing around from 210 to 230. any suggestions

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Old 09-15-2007, 07:01 PM   #2
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210 is normal operating temperature. Coolant is always going to get hot or boil and spout over to the res. But I'd just make sure that your not losing any.

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Old 09-15-2007, 07:54 PM   #3
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definitely not normal

whatever is happening is not normal, my voltage drops and the engine starts shaking when running whenever i begin to hear the gurgling. i wonder if it could be the water pump freezing up or a problem with my thermostat. where would be a good place to start
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Old 09-15-2007, 08:01 PM   #4
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Even if the radiator cap is bad it could be over heating. Take it over to an autozone and they can check the cap and even test the radiator for pressure loss. Other than that I donno.
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Old 09-16-2007, 12:41 AM   #5
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ive been through hell and back with my radiator.

Basically the radiator and coolant is a closed loop system that pressurizes. The stock radiators are half plastic and are pretty cheap. Mine literally exploded on the trail. (pic to follow)

The signal from the sensor on the thermostat housing is sent to the computer and it gives it reading on your dash. now from what ive seen in my 02 is that the dash gauge is practically worthless. Multiple times my readings went from 210 to redline in a matter of 2 seconds. I replaced the sensor checked the wiring multiple times. with no improvements.

Since your system is acting up its best to flush and renew the system. it sounds like your overheating badly if the motor at idle is surging and your alt output is dropping. even though your gauge doest say it is.

either you have a big air bubble in the system or your tstat is not opening and closing properly.

If i was you i would go through the system dump new coolant in it along with a new cap and t stat.
or this can happen to you


my system overpressurized from over heating due to a bad cap and my sensor reading not working like it should.

I now have a all metal radiator, new cap and thermostat. autometer water temp gauge. a flexalite black magic e fan. make sure you bleed the system really good. good luck.
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Old 09-16-2007, 12:52 AM   #6
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mine was also cracked when i got my rig. It was cracked in the middle though.

It had warranty back then so dealer replaced it for free (without too much debating)
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Old 09-16-2007, 09:33 AM   #7
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thankyou

much appreciated i'll hit autozone and see whats up with the pressure because local jeep dealer isn't open until tomorrow. hopefully its just the cap or the thermostat and not something bigger. now that you said the gauge is not showing the overheating because its never been in the red but i have a huge loss of power so it probably has been overheating. thanks again
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Old 09-16-2007, 10:15 AM   #8
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Quote:
Originally Posted by Rawkon View Post
ive been through hell and back with my radiator.

Basically the radiator and coolant is a closed loop system that pressurizes. The stock radiators are half plastic and are pretty cheap. Mine literally exploded on the trail. (pic to follow)

The signal from the sensor on the thermostat housing is sent to the computer and it gives it reading on your dash. now from what ive seen in my 02 is that the dash gauge is practically worthless. Multiple times my readings went from 210 to redline in a matter of 2 seconds. I replaced the sensor checked the wiring multiple times. with no improvements.

Since your system is acting up its best to flush and renew the system. it sounds like your overheating badly if the motor at idle is surging and your alt output is dropping. even though your gauge doest say it is.

either you have a big air bubble in the system or your tstat is not opening and closing properly.

If i was you i would go through the system dump new coolant in it along with a new cap and t stat.
or this can happen to you


my system overpressurized from over heating due to a bad cap and my sensor reading not working like it should.

I now have a all metal radiator, new cap and thermostat. autometer water temp gauge. a flexalite black magic e fan. make sure you bleed the system really good. good luck.

ew... i bet you can still smell residue from a failure like that...
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Old 09-16-2007, 10:19 AM   #9
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Quote:
Originally Posted by Walkeraviator View Post
ew... i bet you can still smell residue from a failure like that...


LOL possibly

When mine died it was cracked in the middle of the metal part so the fan would pull everything back into the engine.
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Old 09-16-2007, 12:11 PM   #10
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i like that smell reminds me of my cj :P
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Old 09-16-2007, 01:00 PM   #11
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just wondering

i have rudged ridge billet grill inserts but i'm sure that they have nothing to do with the problem. still plenty of air flow, but i'm wondering if the out side of my radiator should be hot, i.e. behind the front grill. since my problems behind the grill never gets hot, but if i can remember right i think that it use to be hot
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Old 09-17-2007, 12:45 AM   #12
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your billit grill shouldnt be the problem. I say just renew the system and call it a day. just make sure you bleed that system.

When that thing exploded on the trail it was right after my front coil fell out hahaha. it was like i hit the destruction button. couldn't have been at a better place either. i was going down a pretty steep hill, and i was only half way.


we had to use my buddies old scout as my brakes. really sucked not having power steering either lol.

when that radiator went boom you would have thought someone put a IED under my hood. scared the crap outa me

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