The AC of our 2004 maruti zen had been working without a glitch for the last three years. The car has now clocked 40000 km s. While on a long distance trip the AC blower air flow suddenly dropped. Yes l could hear the blower motor working in full swing, but the only problem being that air was not coming through sufficiently through the vents. Of course a little bit of air was coming through, but the blower motor was working.

And here is the best part of the story. The very next morning the ac blower was working normally. l make the following proposition for the problem. Could the pollen/cabin filter be blocked(Is there one anyway?:-)) . And the mystery remains as to how it solved the problem itself the next morning.

It seems that this is happening when making a long distance trip. Things are OK now but l dont wanna come home sweating n a summer evening while making a long distance trip.

Any detectives who could solve the mystery?????????????

Leaves / plastic.

Either of those lying on the road could have blocked the airflow into the a/c is air filter / grille. When you parked the car, it may have simply fallen down and solved the problem itself.

It is a good idea to pressure wash the condenser coil once a year to remove dust and derbis from it. A/c efficiency will improve drastically.