E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 11-07-2012, 04:39 AM   #1
ryanmyo
Registered User
 
Join Date: Dec 2008
Location: melbourne
Posts: 19
My Ride: 325i Imola M Sport
f*#*ing potentially expensive air con fix

Had a chat with my mech today after i had my 3 serviced, got me worried my a/c leak might be the evaporator. I have a shhh-ing noise sounds a bit like a blow off valve coming, i think from my dash when i take off in the morning.

Anyone know of any specific evaporator symptoms? As opposed to other o-ring leaks etc?

Last edited by ryanmyo; 11-07-2012 at 04:39 AM.
ryanmyo is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 11-07-2012, 09:19 AM   #2
Wolrab
Registered User
 
Join Date: Jan 2009
Location: Houston
Posts: 485
My Ride: 330Ci MT, 545i SMG
Send a message via Skype™ to Wolrab
Do you actually have a leak that you're trying to find? According to another recent thread, that sound you're hearing is pretty common, and it's probably from the expansion valve. I'm hearing the same thing, it works fine, and there is no leak.

Edit: If you do have to replace the evaporator, you're right, it's going to be fn expensive. Half the car has to be dismantled to get at it.
__________________
Engineers do it with a torque wrench

Last edited by Wolrab; 11-07-2012 at 09:31 AM.
Wolrab is offline   Reply With Quote
Old 11-07-2012, 02:29 PM   #3
87isee
Registered User
 
Join Date: Dec 2011
Location: Pittsburgh
Posts: 2
My Ride: 87 325ic; 03 325i
That sound could be a sign that the system is a little low on refrigerant. If it gets low enough, you'll notice the air coming from the right side of the center vent is much warmer than that of the left. For a couple hundred bucks, a dealer will evacuate and recharge the system with a little dye added so they can check for leaks. Start with that.
87isee is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 11:46 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use