I have a 94 Buick LeSabre, my heater and air will only blow through the defrost and the floor it wont blow through the vents. this happened once before and it was some vacuum hose under the hood but i dont know where it is so i cant check that. thanks.
2006-12-01 05:02:09 · 14 answers · asked by txswitch 1 in Cars & Transportation ➔ Maintenance & Repairs
It is either a vacumn hose or a vacumn diaphram valve that is used to open and close the air dampers.
To find.. well that can be tough.. Open the hood start the engine and start listening for a hissing noise. Be careful of the moving parts! Also listen under the dash as this is where the damper control valves are.
If you don't find it then shut off the engine and look for a loose hose.. the vacumn line could be small and the leak minor so it might be hard to hear with the engine running. Turning off the engine keeps you from losing your fingers!
Hope this helps and good luck!
2006-12-01 05:08:18 · answer #1 · answered by wrkey 5 · 0⤊ 0⤋
This will most likely not be an easy fix. Under the dash check the vent door blend mechanism. It may be a motor, a cable, or a vacuum solenoid. If it is vacuum, check the hose for suction. If it has suction when you move the selector then the solenoid is bad. If not, trace it under the hood. Under the hood listen for leaking air. Check the blend door mechanism to see if it will even move. Unless it has a motor it should move will light resistance.
You should be able to move the air to different vents doing this.
I know. This aint the next best thing to being there. Good luck!
2006-12-01 05:21:44 · answer #2 · answered by peedeesuave 4 · 0⤊ 0⤋
there's a vacuum supply line out there that supplies all the vacuum for the inside control unit,when this comes loose it will no longer control the vents,,you Can probably find it by looking over the engine real good,and you may see it,,its located near the fire wall is where it goes through at,,but you should be able to see it off and loose on it,,id look at it real good ,,if not you may have to take it and let a mechanic find it,,and watch him do this,and you,ll know where its at the next time,,good luck with it,i hope this help,s.
2006-12-01 05:15:09 · answer #3 · answered by dodge man 7 · 0⤊ 0⤋
One more thing to try beyond all these excellent answers is seeing if there's a flap or something else that diverts flow from the defrost outlet to the vent.
These sometimes come loose from their housings, and won't move properly when you slide the lever.
2006-12-01 05:13:09 · answer #4 · answered by Jerry J 3 · 0⤊ 0⤋
yeah sound like thats probably what it is the hose has come loose from the vents and needs to be reattached or something had clogged the passage way to prevent the air flow....take it to a mechanic
2006-12-01 05:04:26 · answer #5 · answered by bshelby2121 6 · 0⤊ 0⤋
in case you're smelling exhaust, there could be a leak. this could be an exhaust manifold gasket, EGR difficulty or pin hollow leaks someplace interior the engine compartment. Have the mechanic plug the tail pipe at the same time as the vehicle is working, to advance returned stress, and any leaks will advance into very obvious.
2016-12-10 19:51:31 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Not under the hood, under the dash. Sounds like your vent duct came off. try reaching up underneath the dash and feeling for your air duct.
2006-12-01 05:04:33 · answer #7 · answered by Anonymous · 0⤊ 0⤋
You have to follow the vacuum line from the control all the way back to the engine. It's broken somewhere.
2006-12-01 05:06:16 · answer #8 · answered by Lab 7 · 0⤊ 0⤋
A broken cable, vacuum line, possible radiator problem (thats where you heat is ussually coming from), or the flap that directs the air has broken.
2006-12-01 05:05:17 · answer #9 · answered by bigerv4u 2 · 0⤊ 0⤋
1" plastic hose center of car directly behind fire wall they often fall off on older cars 99 or older just attach and keep an eye on it dont use any sort of glue it will cause foul smell and may burn
2006-12-01 05:08:54 · answer #10 · answered by Adam T 3 · 0⤊ 0⤋