• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

A/c help!!!!

1980mws

New member
I have a 1998 Grand Prix GT with automatic dual climate control. This my problem. I have cold air coming from the far passenger vent and passenger middle vent, not as much cold air coming from the two vents in the middle of the dash toward the driver and hardly any airflow at all on the far left vent. Both blend door actuators
are new and the A/C Vacuum Control Valve is new. Any help would be appreciated. I am stumped!!!
 




I can watch the actuator move. I can turn the door by hand and still the same. Could it be a vacuum hose somewhere?
 


Rev engine while idling. Not much like 2500 rpms if other vent temps start to drop then low on freon. Also u can put fan on lowest setting if the other vents start to cool that's a sign of low freon. I've had 2 w body cars and both have had valve leaks. Hi and low side.
 


When you say you checked it. what was the ambient temperature at the time of the test and what was the low and high side pressure?
 
The only way I have to check the pressure is the recharge kit with an inline gauge. I may have to take it somewhere with the correct equipment and have the pressures checked.
 
Back
Top