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bmbillups 10-11-2012 07:40 PM

A/C Issue
Ok guys odd problem. When I turn on my ac or heater the two side vents blow but i have to turn blower back down to zero and turn them back up to get middle ones to blow. Not a huge problem but kind of weird. Any thought?

jherrington 10-11-2012 10:18 PM

youve probably got a vacuum leak somewhere. the air flowing at first is keeping the air dam up/down for the middle vents, blocking them off. so when the air stops, they fall/ open. kinda like a shop vac when you knock it over, youve got to turn it off then back on to continue vacuuming.
this is just my theory.

02 TJ 10-11-2012 10:30 PM

I had the same problem ill bet if you check under the passenger side fender well below the battery there is a vacuum line the runs to a computer and the rubber coupler will be split or broken off.

bmbillups 10-12-2012 06:40 PM

Thank you guys, ill give it a look tomorrow. Let you know if i need anymore help

jeepsrgreat 10-12-2012 07:19 PM

Mine does the exact same thing. Thanks, now I know what to look for.

Goobs63 10-12-2012 08:24 PM

I noticed mine kind of doing that but it was the side window defrosters if I moved the controls around I could get them to stop blowing.

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