Bubbles in coolant reservoir
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Joined: Jan 2012
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From: Arctic Circle (Northern Sweden)
Year: 1990
Model: Cherokee
Engine: 4.0 Inline 6
I should also tell you that with this system, after you fill it you need to burp it to get all the air out, i do this by jacking up the back end of the jeep about a foot and start it, unscrew the temp sending sensor on the rear of the block a little to release all the air out. (Caution, make sure the jeep is cool when you do this, it will sputter some fluid out and you dont want to burn yourself.)
when you fill the engine with coolant i always do it from the bigger hose off the thermostat housing, hold it up high and pour until you get some out of the tstat housing and then put the hose back on! wahlah!
I fought that stupid closed system for 2 years, finally converted to open where it burps itself and havent had another issue!
when you fill the engine with coolant i always do it from the bigger hose off the thermostat housing, hold it up high and pour until you get some out of the tstat housing and then put the hose back on! wahlah!
I fought that stupid closed system for 2 years, finally converted to open where it burps itself and havent had another issue!
But think I'm gonna do this too, later tonight after work.
You say "bigger hose", is that the big fat one? Because I've been reading so much about this, "upper hose, big hose, lower hose" etc. But not a single explanation to which is which! Tons of hoses under the hood man...
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Joined: Jan 2012
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From: Arctic Circle (Northern Sweden)
Year: 1990
Model: Cherokee
Engine: 4.0 Inline 6
I thought so too, but she runs so normal, good fumes, had no more foam/bubbles after my flush last night.
Forgor to check the oil but earlier this week it was fine.
So I have pretty much ruled the gasket out. Plus, it's a 4.0 I6! Come on, HG, noo way!
Forgor to check the oil but earlier this week it was fine.
So I have pretty much ruled the gasket out. Plus, it's a 4.0 I6! Come on, HG, noo way!
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From: Yakima
Year: 1990
Model: Cherokee
Engine: 4.0 I6
I was trying to burp it according to the Hayne's manual, that's why I left the cap open.
But think I'm gonna do this too, later tonight after work.
You say "bigger hose", is that the big fat one? Because I've been reading so much about this, "upper hose, big hose, lower hose" etc. But not a single explanation to which is which! Tons of hoses under the hood man...
But think I'm gonna do this too, later tonight after work.
You say "bigger hose", is that the big fat one? Because I've been reading so much about this, "upper hose, big hose, lower hose" etc. But not a single explanation to which is which! Tons of hoses under the hood man...
There is two hoses on the thermostat housing, a small one that leads to the heater valve, and a big one that leads to the radiator. take the big hose off the tstat housing, hold it up higher than the rest of the engine and fill it till coolant comes out of the tstat housing.
Upper Radiator Hose
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From: Arctic Circle (Northern Sweden)
Year: 1990
Model: Cherokee
Engine: 4.0 Inline 6
There is two hoses on the thermostat housing, a small one that leads to the heater valve, and a big one that leads to the radiator. take the big hose off the tstat housing, hold it up higher than the rest of the engine and fill it till coolant comes out of the tstat housing.
Upper Radiator Hose
Upper Radiator Hose
I sure don't want my awesome Dolly to die on me! Ordering a new starter too, she's acting up real bad the last 2 weeks...
Go Jeepin'!
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From: Oceano, Ca
Year: 2000
Model: Cherokee
Engine: ATK 4.0L I6 w/ AEM Brute Force inatke, 748 Injectors
Originally Posted by seww
Thanks for hanging in there with a newb like myself, really appreciate it.
I sure don't want my awesome Dolly to die on me! Ordering a new starter too, she's acting up real bad the last 2 weeks...
Go Jeepin'!
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From: Yakima
Year: 1990
Model: Cherokee
Engine: 4.0 I6
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From: Arctic Circle (Northern Sweden)
Year: 1990
Model: Cherokee
Engine: 4.0 Inline 6
Originally Posted by MrAnderson1987
Dude this forum rocks, I'm hella newb to all this too but it's liking having a mass amount of jeeper buddy's at your finger tips. A big thanks to all the helpful people out there haha
Im also worried that if Dolky dies on me, I might have to leave the Jeep world for a different make due to small market here...
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From: Arctic Circle (Northern Sweden)
Year: 1990
Model: Cherokee
Engine: 4.0 Inline 6
Just need to be sure, are you supposed to have the car running when flushing?
I know the Hayne's book said no but as I read on here, it's necessary to get the clear water to go through the block as well.
How does this work? I never tried to access the block drain plug because of it's location. But this should mean it's still dirty in there.
Oh well, after running the jeep a bit last night, the water passed through there and then boiled over so I guess it kinda cleaned itself out
I know the Hayne's book said no but as I read on here, it's necessary to get the clear water to go through the block as well.
How does this work? I never tried to access the block drain plug because of it's location. But this should mean it's still dirty in there.
Oh well, after running the jeep a bit last night, the water passed through there and then boiled over so I guess it kinda cleaned itself out
Thread Starter
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Joined: Jan 2012
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From: Arctic Circle (Northern Sweden)
Year: 1990
Model: Cherokee
Engine: 4.0 Inline 6
Changed the t-stat, had to make my own gasket so this is gonna be interesting in the morning!
Gonna fill her up with more coolant and then take her to work, see what happens. It's a short trip, don't think she'll get warm during that short drive.
Exciting to see what happens now, if she's all good or not. If not, then I don't know what to do next, take her to the mechanic I guess. Have him check her for a broken HG...
Thread Starter
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Joined: Jan 2012
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From: Arctic Circle (Northern Sweden)
Year: 1990
Model: Cherokee
Engine: 4.0 Inline 6
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Joined: Aug 2011
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From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
It often takes several burps with the temp sender to get ALL the air out.
The brown you saw was because air had been getting in somewhere - rusting things.
Check ALL the hoses/connections. When it cools the system sucks in air through tiny leaks.
It may not leak coolant - air is much thinner than coolant and goes places coolant can't.
The brown you saw was because air had been getting in somewhere - rusting things.
Check ALL the hoses/connections. When it cools the system sucks in air through tiny leaks.
It may not leak coolant - air is much thinner than coolant and goes places coolant can't.
Thread Starter
Member
Joined: Jan 2012
Posts: 210
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From: Arctic Circle (Northern Sweden)
Year: 1990
Model: Cherokee
Engine: 4.0 Inline 6
It often takes several burps with the temp sender to get ALL the air out.
The brown you saw was because air had been getting in somewhere - rusting things.
Check ALL the hoses/connections. When it cools the system sucks in air through tiny leaks.
It may not leak coolant - air is much thinner than coolant and goes places coolant can't.
The brown you saw was because air had been getting in somewhere - rusting things.
Check ALL the hoses/connections. When it cools the system sucks in air through tiny leaks.
It may not leak coolant - air is much thinner than coolant and goes places coolant can't.
I'm gonna drive her up to temperature after work and then try and burp her real good.
I hope that the brown was just rust and nothing else. Been worried it's the head gasket or the head itself. The other day I saw that some of the connections were kind of loose, espesh the one under the reservoir, saw it's been leaking there a bit. That's tight and nice now though
We'll see later, thanks guys!
EDIT: By the way, shouldn't a 195 degrees t-stat, open at 195 degrees? Could air in the system cause it not to open?
Last edited by seww; Sep 20, 2012 at 01:08 AM. Reason: Forgot to mention...