Cause of week air con on my Focus?

I have an 09-plate diesel Ford Focus. The air con works normally when started up. After 10-15 mins, it still blows cold, but the volume of air coming through the vents drops drastically.

If you turn the fan up to 4 and push the aircon button - turning off - the air volume gradually increases over a period of 1-2 mins. You can then turn on the aircon button again, however it's rinse and repeat which gets a bit tiresome on a long trip.

The Ford dealer says they can find nothing wrong with it in spite of me leaving a written explanation as above.

Any ideas? OK I can carry on doing the on/off trick for ever if need be, but I'd rather sort it.

Asked on 12 June 2013 by James Heaton

Answered by Honest John

I'd guess that the pollen filter might be blocked, impeding the airflow into the system.

Tags: air con technical issues

Similar questions

My car keeps overheating - what's the problem?

Recently, I had the water pump changed in my 2005 SEAT Ibiza. It was always at 90 on my temp gauge, but since the pump change it keeps overheating. It's not the coolant as I've topped it up and there are...

My Ford Transit Custom isn't blowing cold air - what's the issue?

My Ford Transit Custom isn't blowing cold air. The temp gauge also shows no temperature.

Can I fit a 'deflector' behind my car's grill to protect the a/c condenser from damage?

I replaced the aircon condenser in my BMW 320 at a price of £463. The condenser is located immediately behind the front grill, which a stone entered causing the damage. Can any 'deflector' be fitted behind...

Related models

Ford Focus (2008 - 2011)

Much improved 2004 Focus. Great to drive. Comfortable and well laid-out interior. Wide range of engines. Low emission ECOnetic versions offer 55mpg +.