Air Con Judder?

[JakeyCUK]

Hi, the hot weather has got me using my air con for the first time which has led me to find that after it's been running for a couple of minutes the car starts to judder at low speeds? At first I thought my clutch had started to go but the juddering definitely stopped when I turned the AC off.
Car is going in for it's MOT at the end of the month and I am getting some work carried out so is there anything I could get the mech to check for this problem?

Thanks in advance all!

 

[Ash J]

Pretty normal I would think? Probably just the idle dropping due to switching air con on. Bit like if you use both electric windows at idle, or a lot of electrical things at once, revs will dip slightly.

 

[Addicted]

Nailed in the first post imo.

 

[DrR]

Put your air con on, rear heated screen, and try putting both windows down at once, she'll shudder like a goodun then.

 

[GrahamS]

My engine actually increases the idle slightly when the a/c is on but of course it's a DCI.

 

[JakeyCUK]

Ok sounds normal then haha, thanks for the input! I thought I might have had some issues with the belt or something :up:

 

[BGEarles]

Glad i saw this post as i was panicking the other day when mine started doing it, haha.