Volvo S40 The S40 is Volvo's most affordable sedan with all the amenities of a luxury sports car.

Clicking Sound While Driving

Thread Tools
 
Search this Thread
 
  #1  
Old 02-28-2018, 06:33 PM
sublimeswell2's Avatar
Junior Member
Thread Starter
Join Date: Feb 2018
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Default Clicking Sound While Driving

Hello,

So I've noticed a faint clicking sound while driving to work. It comes from the front passenger side, and it is quite faint. It sounds as if something were clicking on and off. It will go once, and then after a few seconds, it will click again.

What could this be? Is something incorrectly connected underneath the passenger seat? FYI: I recently had my entire interior taken out to fix a sunroof leak, replace the carpet, paint the bottom with anti-mold paint, disinfect, etc. The interior had to be put back in.

Any ideas?
 
  #2  
Old 03-01-2018, 05:01 AM
sublimeswell2's Avatar
Junior Member
Thread Starter
Join Date: Feb 2018
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Default

One more thing I forgot to mention: the car has also had its timing belt, AC belt, and serpentine belts replaced. I just bought it about a month ago.

Could the noise be attributed to any of these? It seems to be coming from under the glove box somewhere. I checked last night.
 
  #3  
Old 03-01-2018, 07:03 PM
mt6127's Avatar
Super Moderator
Join Date: Mar 2012
Location: Burlington, VT
Posts: 9,209
Received 485 Likes on 466 Posts
Default

you didn't note if the clicking changes with engine speed, road speed, turning left/right etc. If its just random, I'd suspect its a relay or similar.
 
  #4  
Old 03-07-2018, 12:03 PM
sublimeswell2's Avatar
Junior Member
Thread Starter
Join Date: Feb 2018
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Default

The clicking comes from behind the glove box it seems, and it starts whenever I turn the A/C on. If I turn the A/C off and set it to fan only, it stops. Turning it to recirculate doesn't do anything--the clicking continues.
 
  #5  
Old 03-16-2018, 06:26 AM
Hudini's Avatar
Senior Member
Join Date: Oct 2007
Location: Shanghai, China
Posts: 2,840
Likes: 0
Received 16 Likes on 16 Posts
Default

That is the direction of the A/C compressor.

 

Last edited by Hudini; 03-16-2018 at 06:29 AM.
  #6  
Old 03-26-2018, 12:09 AM
BerresTyler's Avatar
Junior Member
Join Date: Mar 2018
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

ya its your ac pump/ compressor engaging and disengaing
 
  #7  
Old 03-29-2018, 07:13 PM
sublimeswell2's Avatar
Junior Member
Thread Starter
Join Date: Feb 2018
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Default

So if that's what it is, what do I do to fix it? What do I tell my local shop to do?
 
  #8  
Old 03-31-2018, 09:12 AM
BerresTyler's Avatar
Junior Member
Join Date: Mar 2018
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by sublimeswell2
So if that's what it is, what do I do to fix it? What do I tell my local shop to do?
It needs it needs to be adjusted or the shims have worn out I'm not exactly sure but it's out of adjustment is my opinion and the shims need to be replaced
 
  #9  
Old 03-31-2018, 10:30 PM
firebirdparts's Avatar
Senior Member
Join Date: May 2012
Location: Kingsport, TN
Posts: 1,921
Likes: 0
Received 41 Likes on 40 Posts
Default

It's necessary that it turn on and off. You don't fix it. It has to turn off to prevent freezing. Total refrigerant load will affect it to some degree, but you cannot and should not stop it entirely.

You may get a lot of people telling you it can be fixed, but it's necessary. It's only March.
 
  #10  
Old 04-06-2018, 04:27 AM
Hudini's Avatar
Senior Member
Join Date: Oct 2007
Location: Shanghai, China
Posts: 2,840
Likes: 0
Received 16 Likes on 16 Posts
Default

Some are louder than others but yes, it's normal. The time for repair is when the air temperature cycles between hot and cold when you have the AC on. Usually the first time you notice this is on the hottest day of the year. The problem is the gap on the AC compressor clutch is too wide but only barely. Then on the hottest day of the year, when the AC is working hardest, that gap expands just a fraction which causes the clutch to disengage. Now after a minute or two the clutch cools down, the gap narrows, and the AC magically works again. The fix is to remove one of 3 shims on the AC compressor clutch which narrows the gap back to within specs. Normally you start with the thinnest of the 3 shims as each is a different thickness. There are threads with pictures showing how to do it. It takes about 20 minutes and can be done by you.
 
  #11  
Old 04-07-2018, 08:46 AM
sublimeswell2's Avatar
Junior Member
Thread Starter
Join Date: Feb 2018
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Default

OK, thank you for all of the input, guys. I just feel like in most cars the A/C doesn't click like that while driving. Is there anything else I should tell my mechanic to look at it when he works on it?
 
  #12  
Old 04-07-2018, 04:37 PM
Hudini's Avatar
Senior Member
Join Date: Oct 2007
Location: Shanghai, China
Posts: 2,840
Likes: 0
Received 16 Likes on 16 Posts
Default

Check R134a refrigerant levels and be gentle on your wallet?
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Chloex124
Volvo S80
1
01-29-2017 09:41 AM
cameo
General Volvo Chat
9
09-27-2011 09:49 PM
blue02
Volvo S80
1
09-03-2011 10:47 AM
jxi
Volvo S60 & V60
1
02-15-2011 10:00 AM
elbert
Volvo S70
12
04-12-2006 10:04 PM



Quick Reply: Clicking Sound While Driving



All times are GMT -5. The time now is 05:13 PM.