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Unread 01-29-2010, 07:49 PM   #16
PrinothPro
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1990 YJ Wrangler 
 
Join Date: Mar 2009
Location: Park City, UT
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You may have air in your system. Jack up your jeep front or park uphill with engine running with radiator cap off to release any air. A stock heating should be significant enough. There is plenty of things you can try before you finally have to resort to using aftermarket heaters.

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Unread 01-29-2010, 07:50 PM   #17
Mean Max
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Quote:
Originally Posted by WSTOF7 View Post
they look like the heaters in a school bus run off engine coolant
If you're in -50 temps, and you have the room to mount an auxilary heater between the seats, I wouldn't hesitate to splice into factory heater lines & go for it!

I certainly hope you have a hard top & full doors!

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Unread 01-29-2010, 07:55 PM   #18
MJMPC
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What temp does your gauge show?
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Unread 01-29-2010, 08:05 PM   #19
marvinb
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I had the same problem today with my heat, heres what i did to correct it.. A couple weeks ago i flushed the radiator and heater core( i thought i got the heater core flushed) and changed thermostat and dumped in prestone 50/50.. today i took the jeep for inspection and on the way about froze.. what i did was i disconnected the heater core hoses and ran 1 to an empty jug ( trying to keep the hoses and core full of fluid) and the other held upright and blew air in the hose with compressed air. First time i hit the trigger on the air hose extremely dark rusty gunk came flyin out, so i hooked everything back up and took it a local car wash and used the pressure washer to finish cleaning the heater core out. You could use your own pressure washer if you have one, i did not. When using the pressure washer dont hit the trigger to blast with the wand just bump the trigger until all fluid coming through is clear. I used soap when i did mine and then used rinse... swap back and forth on your hoses to thoroughly clean the core.. when ur done reconnect hoses and top off fluid.. I did mine and the heat was great, wife actually made me turn the blower down
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Unread 01-29-2010, 08:06 PM   #20
WSTOF7
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1992 YJ Wrangler 
 
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it runs right around 200 iv got a hard top and doors theres no air in the cooling system at all. are there any aftermarket direct bolt in heaters? has anybody run an auxiliary heater that runs off coolant? not the 12v ciggarette lighter junk? thanks for all the feedback
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Unread 01-29-2010, 08:12 PM   #21
WSTOF7
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thats almost exactly the same thing i did today and i let clr sit in it for about 20 min too very little gunk came out i guess ill try flushing it again tomorow and if not ill get an auxiliary heater and find somewhere to mount it. anybody have any experience with adding another aftermarket or replacement heater with good results?
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Unread 04-02-2010, 10:42 PM   #22
SnowdogMarc
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Quote:
Originally Posted by WSTOF7 View Post
it runs right around 200 iv got a hard top and doors theres no air in the cooling system at all. are there any aftermarket direct bolt in heaters? has anybody run an auxiliary heater that runs off coolant? not the 12v ciggarette lighter junk? thanks for all the feedback
Quote:
Originally Posted by WSTOF7 View Post
thats almost exactly the same thing i did today and i let clr sit in it for about 20 min too very little gunk came out i guess ill try flushing it again tomorow and if not ill get an auxiliary heater and find somewhere to mount it. anybody have any experience with adding another aftermarket or replacement heater with good results?
I know this thread is a couple of months old but I just got my hands on an aftermarket aux heater that runs off the coolant from a local club member that was parting out his rig. I tried replacing the core with a new one but it only helped slightly. The worst part of the install was getting the right location for the coolant hoses the first time. I have a 2" body lift so I ran the hoses out the transmission tunnel and spliced it in series with the stock heater with the aux being the first one fed with hot coolant. I put split loam over the hoses to add a bit of protection to them and only used the low and med settings of the fan since the high speed was almost double the currant (5amps) and not much more output than med was. Was also cheaper for a on-off-on switch at 15 bucks Vs 50+ for a off-on-on-on heater switch. I ran 12v from the battery to two relays and a switch running off IGN for power. Took a couple of hours to install and the time from cold to feeling heat has been cut in half. I'm using the aux for the main cabin heat and my stock one for the defrost. Works great and I only need to turn the aux on low for a few min before I have to turn it off because it's getting too hot. One of the best mods I've done so far and it only cost me about 40 bucks total for the install.

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Unread 04-02-2010, 11:45 PM   #23
Mark455SD
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You're too late Snowdog...I think the OP froze to death.
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