Fresh Air Blower, Sound, but no fury Options

[rwilner]

When I put both black levers to the right, I can hear the fresh air fan blowing but the airflow out the defrost and dash vents is quite minimal. The fan does work on all 3 speeds.

Similarly -- I just reattached all my heat, and even with the booster fan going in the engine compartment, there is just not much airflow. The engine compartment hose and the flapper --> firewall hose are new, the HX's are SSIs in good shape as is the rest of the engine compartment plumbing.

What level of airflow should I expect? What should i check or refurbish to get better CFMs?

[Tom_T]

I agree Rich, if you've verified that your fans & flappers front & rear are all working, then you've got an airflow leak at hoses &/or connectors in 1 or more places. Check them all by removing & inspecting the hoses by pulling the spiral springs apart, cuz they'll cover-up except when "losing air" under pressure. Since both fresh & heat are affected, I'd start with the ones in the cockpit/dash area & behind the fuel tank at the fresh air box to dash.

There's also an outside chance that the hose(s) in the longs could be broken or come loose - esp. if any work was done to the longs &/or jack tubes/supports.

Fresh & heated airflow should be good at even low fan speeds to wherever you direct it.

BTW - the dash controls allow you to put cool fresh air on your face with heat at your feet, which I always loved - esp. when driving late at night when the hot air in the face would make me drowsy. It always kept my toasty with heat even when sub-zero in the mountains out west here on skiing trips!

FYI - when you order from Perf. Products/Automotion/Ecklers they're shipping from Titusville FL now (since Jan.) & they carry most of the hoses in both OE paper & upgraded materials (loprene, etc.), & the ones behind the speakers can be adapted from the engine compartment ones just by cutting to length (same diam. IIRC) if they don't carry specific part nos. for the long to dash hoses.

Look at all this extra work this way - more time to expand your "cuss-cabulary"! (IMG:style_emoticons/default/biggrin.gif)

[rwilner]

I agree Rich, if you've verified that your fans & flappers front & rear are all working,

I haven't verified the front flappers, although i hear some movement / squeaking of valves when i move the levers. Where are the front ones located?

It's probably best for me to just replace the existing hoses, as it sure can't hurt...