Thread: HVAC Issues.

So as the title indicates i'm having some issues with my Digital HVAC on the 99 GTP that really torques me off. No matter what fan mode i have my HVAC set to it blows to the Defrost and a little bit to the floor. The only time you can feel anything going out the vents is when your going down the road around 70mph.

You can turn the HVAC all the way down to 60* full blast on the fan setting and Vent and it will go to the Defrost and blow like no ones business. Is this a vacuum door or my HVAC controller ?

I'm stumped. I have check the elbow on the passengers side and it looks to be connected to the line just fine.

I plan to do some researching on ALLDATAdiy.com later 2night.


Any help and comments are appreciated.

Yay!!! Just fixed my AC! Had a loose purple vac. line laying under the carpet unattched from when i did my fog light install.


Connected it and she blows like a sum bish!

All thanks to ALLDATAdiy.com :: Leading Source of Diagnostic and Repair Information for schematics. I paid 14.95 for a year sub. and it's litterly saved me 300.00 already!