96 GTS: Heater/AC: Low Vent Flow Velocity: Possible causes?

[Tom and Vipers]

I'm in PA and will be fixing car in NV so just trying to some homework.

• Blower motor sounds like it is running properly
• Proper vents active for Heat and AC but flow is very low
• No sound of "rushing air" in high speed

If I had to guess:

• Something restricting the blower inlet
• Blower cage fan is slipping on shaft

Regarding the carbon fiber hood:

• Hood installed with no cutout for heater intake "shorkel." I think they left the donut rubber gasket off to get some inlet. I suspect driven at 20-40k miles like this.
• I put the hole through the hood maybe 5 years ago and never got around to putting the screen over it. Car is in the desert and spends 50 weeks a year locked up in an airplane hanger. I doubt that critters built a nest because no debris shoots out the vents when I turn the blower on.

Any suggestions will be greatly appreciated.

 

[Tom and Vipers]

Anyone? My FSM's are with the car in NV and I'd like to get some idea what I'm up against.

EXAMPLE: "You have to pull the dash most likely," would mean I'm not going to fix it.

Looks like MoparPartsGiant shows parts manual pics... from what I can see, there are 2 vacuum actuators.

QUESTION: Do the duct flappers ever break off of their shaft? Late 60's GM AC cars did this all the time. From the outside, everything is working but a lame broken off flap screws the pooch.

 

[Tom and Vipers]

Drove car home successfully using AC for almost 3000 miles - the continued use seemed to "free up" "stiffness" in the heater duct box. Still, hope to disassemble to get the most out of system.

ALSO replacing the compressor hose O-rings appear to have eliminated the system slow leak (knock on wood.)