Help me please.
OK i have a 2003 WJ and my heat turns on and blows hot air but it wont change from defrost to anything else. and also when i turn the dial from high to low the back light well be off i turn it on and off again and the light comes back on not sure if that's part of the problem or not. at one time i would hammer down on the gas pedal and then let off and it would start to blow air out of the vents so im thinking its a vacuum problem not to sure. also it started doing it after i took it to jeep dealership to get a cam job done so im not to sure if they did something to it or not. its starting to get cold so i need to figure this out. i hope someone can help me thanks..
What engine do you have? I had the 4.0 and this happened to me once. It is probably a vacuum hose off of the eng. On the 4.0 look on the drivers side of the eng at the intake manifold about the middle of the eng (around the 3 or 4 cylinder area). That is where I found my problem. You might be able start it up and hear a sucking sound. If not there then check all around and even under the dash for a vacuum line that is either off or broke/cracked.
Previous Jeeps: 84 CJ7 (A True Jeep), 2000 XJ (163,000 Miles/Totaled (Pictures of wrecked Jeep in gallery)), 2004 WJ (parting out die to major electrical issues)
If you don't have time to do it right the first time, how do you have time to do it over.
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2011 Tango/Mango JKU
Definitely a vacuum leak. The lighting is a separate issue.
2002 Overland - 4.7 HO, "Select-Drive", 4" RC long arms, TAG front winch bumper, 32" BFG KM's, 3" exhaust, Magnaflow hi-flow cat, Flowmaster 50 series
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