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| E12, E28, E34, E39, E60 General discussion and technical help for all year 5 series cars. |
07-22-2008, 06:15 AM
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#1
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Name: 1999BMW535i
Title: United Newb
Status: Offline
Join Date: Apr 2008
Location: sydney
User not setup in Rate My Car. Click here to set it up. Your Ride: BMW535i, Toyota LandCruiser
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knocking sound when using aircon
when the aircon is on, i can sometimes hear a clunk / or knocking sound from the compressor. aircon is working fine. i got cold air. what could be the problem? if it is the clutch from the compressor, can it be fixed? or have to replace the whole compressor?
thanks
1999 535i V8 ( same aircon as 540)
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07-22-2008, 07:10 PM
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#2
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Name: 535iGuy
Title: Member
Status: Offline
Join Date: Apr 2008
Location: Australia
User not setup in Rate My Car. Click here to set it up. Your Ride: 1996 BMW 535i
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The clutch wont knock, just slip and prevent a good drive to the compressor. I think it sounds like the compressing piston inside the compressor failing. (Again, get a second opinion on that, or get an exploded parts view of the unit to see if it is the normal piston type of compressor) but I reckon thats what it could be.
__________________
" Come on, like you never watched 'The Transporter' movie & thought "Damn I wish I had a BMW like Stathams.."
See my ride here- http://img441.imageshack.us/my.php?i...sc00005uq0.jpg
1996 E39 sapphire black 535i. 3.5L M62 V8, steptronic auto, BBS wheels, etc...Needs some work though!!
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07-24-2008, 08:37 AM
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#3
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Name: 1999BMW535i
Title: United Newb
Status: Offline
Join Date: Apr 2008
Location: sydney
User not setup in Rate My Car. Click here to set it up. Your Ride: BMW535i, Toyota LandCruiser
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i will get the air con service to have a look. but do you think it may just need some oil /lube?
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07-24-2008, 10:28 PM
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#4
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Name: 535iGuy
Title: Member
Status: Offline
Join Date: Apr 2008
Location: Australia
User not setup in Rate My Car. Click here to set it up. Your Ride: 1996 BMW 535i
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I think the compressor is a sealed unit, and probably doesnt need extra oil, but like the sealed trans & diff, it may require some, depending on the year & mileage of the car. More likely though, its been running low on internal lube lately, and this has caused some wear, which is now unfortunately starting to get to the stage where you can hear it..
__________________
" Come on, like you never watched 'The Transporter' movie & thought "Damn I wish I had a BMW like Stathams.."
See my ride here- http://img441.imageshack.us/my.php?i...sc00005uq0.jpg
1996 E39 sapphire black 535i. 3.5L M62 V8, steptronic auto, BBS wheels, etc...Needs some work though!!
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