Range Rover AC duct popping

[Gaurav]

Every time i start my Range Rover, AC duct start popping for 8 - 10 sec (6-7 pops in total).

Its 2000 model 4.6 Range Rover Autobiography. P38 engine.

First of all wanted to know what is this poping noise for,

is it like a duct opening or is it a malfunctioning? Its like this since i bought the car last summer. Just for fyi the heater is cut off and small book is shown on HVAC screen down.

Now since last week i can hear the popping of the AC duct but it isn't opening and when the AC in switched to max output i can only hear a whistle but no air comes out. I found a way around this problem that is to restart the car two to three times and which opens the ducts after the pops finishes.

How can i fix this problem guys, please help. Dont want to take to Al Tayer as its a expensive knife. Thanks guys.

[JohnT]

Before jumping to any big job, check your three different blower relays and swap them for fun and see if blower works.

These intermittent issues only point to relay failure in my mind.