my 96 lesabre's HVAC works fine - until you accelerate. the air is then directed to the floor, and after you maintain that engine speed for a while, OR lef off the gas, the air will then return to the vents.
2007-08-05 15:16:28 · 3 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
ALL of the vents in the HVAC system are vacuum contoleed. when you stomp on the gas, the vacuum in the HVAC system changes and your vents flip-flop for a minute.
Either live with it (hey it`s a 10 year old car) or pay someone to find out what tube is leaking or which check valve has quit,
or quit stomping on the gas! You cant race people in a Buick!
2007-08-05 15:23:33 · answer #1 · answered by mdcbert 6 · 1⤊ 0⤋
check the vacuum line to the hvac. either the check valve is bad or the line fell of the vacuum tank
2007-08-05 15:21:35 · answer #2 · answered by plymouthfurysport68 3 · 0⤊ 0⤋
well when you accelerate you change engine vacuum, when you get to a cruising speed or let off the vacuum increases. I am wondering if your vacuum canister has a leak in it.......
2007-08-05 15:22:16 · answer #3 · answered by Christian 7 · 1⤊ 0⤋