This one of very few times I miss living up north. This may not be such a problem if it were 40 degrees out. But at a warm 70 degrees its a bit miserable.
The problem comes from something being wrong with the temp lever on the dash. It is stuck about 3/4 of the way to the right. It would be great to fix this, but it seems like parts are broken inside and will probably need to be replaced. Until I can afford to do this I would be happy just shutting off the whole heating system. Is this possible???
I tried pulling the HEVAC fuse, but all that did was kill the fan. It still generates heat which is blown in with natural air flow when I drive.
But as said before pull of the black dash pieces then inscrew the HVAC control and see if you can see the problem from there. Maybe be an easy fix like the cable is caught on something...
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Hey man, mines been stuck for about 4 years. Won't go more than 1/2 way to cold, but will go all the way to heat. I took it to the dealer when it first happened and they said no fix, just replace it. I guess I'm lazy but I never fixed it. Let us know if you find a way to fix it.
For a more permanent solution find the heater hose going to the heater core and put an inline shut off valve in it. My grandpa did that to his 48 Chevy when it was new because he didn't want heat in the summertime. We still have the truck and the valve.
I haven't looked at my TJ but there may already be a shutoff under there, if so just pull and plug the vacuum line and that should shut it off. I just had to replace the valve on my 79 F250, it rusted out.
No hot coolant, no heat.
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