I checked vacuum as in Fact Serv Manual. It is ok, except vac doesn't hold at black port at vac conn as FSM says it should.Panel vents don't work at all, whether at idle or acceleration. Always blows on floor when set to PANEL. DEF and FLOOR settings work fine. I changed out ATC unit and Power Module. ATC diagnosis shows no faults. FSM mentions check valve, but A) I can't find it, and B) I think it isn't the culprit because vents NEVER work- not even at idle (high vacuum). Check valve at Master Cyl is ok and does hold vacuum where it goes into car thru firewall. Temperature settings work as expected. Coolant mixing valve works fine (vac actuated).
Thank you for your help!
2007-09-01 13:01:20 · 4 answers · asked by GTCturboII 4 in Cars & Transportation ➔ Car Makes ➔ Chrysler
You've probably have a servo leaking vacuum. Check each one at the servo. If one leaks, none of the rest will function right. Also the vacuum hoses may have been switched around.
2007-09-07 08:50:57 · answer #1 · answered by Jackolantern 7 · 0⤊ 0⤋
The vacuum that opens the vents may not be getting the vacuum it needs check under the A/C under dash make sure all hoses are good and blend door is working properly, hope this helps.
2007-09-01 13:07:24 · answer #2 · answered by JT B ford man 6 · 1⤊ 0⤋
There is a small door way up under your dash ,it has a wire that goes to it .that most likely broke had this happen to me before.
2007-09-06 18:43:46 · answer #3 · answered by Anonymous · 0⤊ 0⤋
More than likely the compressor is shot.
2007-09-01 13:10:44 · answer #4 · answered by johnandeileen2000 7 · 0⤊ 2⤋