Well of course it is winter, and my heater in my 2002 TJ (no AC) is acting up. The fan works on all the settings but it seems to be stuck on Defrost. If I change the control to blow on the feet etc is is always blowing from the defrost. Is there a quick fix for this? I am dreading that it is the control unit $$. The nob is not broken since it turns back and forth and stops in the upper and lower positions.
Likely you just lost vacuum.
There is a check valve near the back of the intake manifold. The line sometimes pops off or cracks.
I would be really hoping it was a loose vacuum line. I am not sure where the TJ pulls it's vacuum from, but check the back corner of the intake manifold for a loose or cracked vacuum line.
Can you hear any hissing from under the dash? I 'think' there is a line up there you can in theory kick off.
The defective blend air doors is on JK's I think. This would be a recall except it fails to defrost so it can be classed as not a safety issue so it is just a cool $1000.00 labour rip off.
If it is the blend door, stop by for a visit and we can tear it apart in the driveway over a day or weekend. I have air tools now and a couple extra couches.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail > Well of course it is winter, and my heater in my 2002 TJ (no AC) isWell, I unplugged the vacuum switch from the dash and then disconnected the cable from the dash. Everything looked ok, so I plugged it back into the dash the reconnected the switch. Wow it worked. I assume some of my gental offroading had jarred something loose.
LOL! Cool, thanks for the follow up.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 'New' frame in the works for '08. Some Canadian Bush Trip and Build Photos:MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.