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ac vents wont open

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Old 05-10-2010, 04:56 PM
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Default ac vents wont open

i recently bought a v6 camaro(1999) didint run, but the AC blew really cold,had the v6 and everything else swapped out to 5.3 ,t56 exc. anyways now the AC vents wont open ,it just blows air from the top , anything i can check b4 i take it back? i would much rather fix it myself than have to take it back
Old 05-10-2010, 04:59 PM
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Your AC vents are vacuum controled. . . There is a small tube located close to the PCM. . . I am not sure where it runs from inside the car though.
Old 05-10-2010, 05:36 PM
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ok i checked , and there is a small plastic hose comming out of the fire wall by the PCM and nothing hooked up to it, can anyone take a look at their beast and tell me where it goes please ??????? its hot here thanks
Old 05-10-2010, 06:48 PM
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anyone ?
Old 05-10-2010, 07:46 PM
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any vacuum port
Old 05-11-2010, 01:53 PM
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It should plug in at the back of the intake
Old 05-14-2010, 09:58 PM
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K got it !!! their is a VERY small canister that hooks up to the lil hard plastic hoses, the canister has 3 ports the one pointing to the top goes to the front of car ( big canister)the one pointing straight goes to the hose going inside the car (firewall) and the one pointing down goes to the back of the intake manifold , .now my vents blow nice and hard .thought i would post incase someone else needed the info.


vaccume ,vaccume ,vaccume, vaccume
Old 05-16-2010, 10:33 PM
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yes, there is a connector with three hoses going to it, the one goes under the frame on the passenger side to a vaccum "holding" tank. the other to the intake, all comeing through the firewall, witch connects near the heater core under the passenger side dash, with a connecter of vaccum lines, that then connect behind the switch under the radio.




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