whining noise after A.C. is on

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Hany Saad
Learner Driver
Posts: 50
Joined: Fri Mar 30, 2007 11:26 am
Location: Alexandria,Egypt

whining noise after A.C. is on

Postby Hany Saad » Wed Jul 09, 2008 11:19 am

Hello all,

Mine is an 06 Megane 1.6 petrol engine with 20K on the clock,I did not use my a.c. for the last 8 months or so (winter time in Egypt),lately when using the a.c. for long journeys(2hours or more) and then switching it off,I start hearing a whining noise with a regular pitch during motion on all speeds,it is not related to the brakes nor to the wheels its coming from something rotating with the motor,it becomes louder when I shift to normal during motion.

Next day the sound is gone and so on after the a.c. is on for like 2 hours or so and then I turn it off I start hearing the sound,if I do not use my a.c. or use it for short periods, no sound is heard,

any help will be highly appreciated.
Megane II 2006 sedan,Grey eclipse (B66),1600cc,16V, VVT,steptronic

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terry_mccann
Advanced Driver
Posts: 286
Joined: Tue May 06, 2008 2:49 pm
Currently Drives:: Megane SportsTourer 1.9 dCi 120 PS, 01/2004, Polargrey, Confort Privilege (Partial leather, Alpine 9871RR, 16"-Alloys, 6-speed)
My gallery: http://meganeboard.de/viewtopic.php?t=3437&start=0

Re: whining noise after A.C. is on

Postby terry_mccann » Wed Jul 09, 2008 12:25 pm

best bet is that your refigerant level has decreased and has to be filled up.

be advised, not using the AC for 8 months is not good at all, everythings drying up inside the AC-system and thus the gaskets are getting damaged over the years....use it once a week for some minutes to avoid this
Megane Grandtour 1.9 dCi 120 PS, 01/2004, Polargrey, Confort Privilege (Partial leather, Alpine 9871RR, 16"-Alloys, 6-speed)
My gallery: http://meganeboard.de/viewtopic.php?t=3437&start=0

cactusbob
Advanced Driver
Posts: 411
Joined: Fri Apr 07, 2006 7:37 pm

Re: whining noise after A.C. is on

Postby cactusbob » Wed Jul 09, 2008 2:28 pm

Don't understand why you hear it after the aircon is turned off. But yes get it regassed (they put oil in too) and see if it fixes your problem
225 5dr FF + Xenons
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