92 GP LE A/C won't switch from floor to vents

AC will not switch from defroster to either floor or dash vents. AC cycles, fan works but air flow with not change. Recently had the car work on so I'm thinking it may be a vacuum line. Don't really know just guessing! Can someone help me locate the vacuum line on the 3.4 that controls the air flow direction? Is it possible the electrical switch could be bad?

Thanks for the help...

Ron

That vacuum line runs off the block on top of the throttle body, over to the vacuum storage canister, then through the firewall to the HVAC unit.

That vacuum line runs off the block on top of the throttle body, over to the vacuum storage canister, then through the firewall to the HVAC unit.
Checked the vacuum line and all looks good? Any other ideas? Electrical perhaps. Is there a way to check?

Just for reference, what kind of work did you have done to the car?

Just for reference, what kind of work did you have done to the car?

After thinking about the problem I was convinced it was a vacuum issue and not electrical. Finally found a pinched line behind the motor. All is well and the system is working perfectly.

KISS - The simplest solution is most likely the best...

Thanks very much for all your help.

Ron:wink:.