No picture but a SWAG would be the vacuum generator which provides a vacuum to all the lines going to the dash heat and air controls.
I would check all the connections.
I accidently hit one of my lines causing the vacuum generator to run all the time.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
|