hey i think my vents have a mind of their own...cuz when i put it on defrost then it will go outta the defroster but when i go to the a/c it still shoots through the defroster...but then sometimes aka today i put it on the defroster and it shot out of the vents and it wont go back........what the F*** is wrong??

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84TA L-69 305HO stock 190hp and 240 ft-lbs.

 

sounds like the vacuum selector has a leak, you cna pull it apart and fix it, or just do what I did, get another heater/ a/c control unit and just swap it in. Nothin complicated, just put the vacuum lines back on right

 

oh
so its only the switch panel?

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84TA T-tops L-69 305HO stock 190hp and 240 ft-lbs.

 

MattW,

This is a problem common to our cars. First, You could have a leak somewhere in a vac line (a mechanic can check that in five minutes). Second, the harness at the 'switch panel' could be leaking (try removing the harness from the vacumm valve tubes and swabbing the tubes with petroleum jelly). Three, as 86ZRichie says, the vacuum valve may be defective (the valve is held in by two screws, an easy fix; however, you'll have to remove the AC/Heater head. Removal is straghtforward: vac harness, electrical connections, and the temperature cable (On the top left of the AC/Heater control, note a slot. The cable is secured to the AC/heater control by a rectangular plastic piece with a hole in its center. When the plastic piece is inserted in the slot, a circular tab pops into the hole and locks the cable in place. Use a small screw driver to separate the tab from the hole).

JamesC

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alright
thanks for the help...i will try it probably tomorrow

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84TA T-tops L-69 305HO stock 190hp and 240 ft-lbs.

 

i know this will sounds stupid....but how do i get the switch panel out?
or am i just gonna have to take the whole consol apart??


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84TA T-tops L-69 305HO TH-700R4 stock 190hp and 240 ft-lbs.
sony xplod cd player,2 12" profile "baja" subs, and a 250 watt MTX amp
$350 for the subs,amp, and box...rattles my car very good!

 

Remove the black plastic bezel that surrounds the radio and heater controls (four torx screws). Once the bezel is removed, you'll see that the AC/heater control head is held in place by three screws.

JamesC

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yah i know what you mean
i got that far
its just that when i got it all loose it would only pull out like an inch or 2
is there something else that is holding it??

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84TA T-tops L-69 305HO TH-700R4 stock 190hp and 240 ft-lbs.
sony xplod cd player,2 12" profile "baja" subs, and a 250 watt MTX amp
$350 for the subs,amp, and box...rattles my car very good!

 

All those that I've messed with have pulled out far enough to access everything (see my post above) required to yank the unit.

JamesC

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It's kinda hard to pull out cuz of the temp cable... it doesn't like to give much. It's up to you, but pulling out the stereo helps alot...

KAM