You can hear and feel the blower but there's no air flow in the roof or vents in the ceiling

why is my van running rough after replacing the EGR valve

also a whine/hissing noise near or from air ccompressor under hood will this effect future performance , right now truck is running great, only check engine light is on

Motor 5.4 Triton

located under van under side doors

Runs good for about 10 minutes, then starts misfire

I have already pulled the drive shaft and drum off/I see the shoes but do not see how to remove them