C-Class (W202) 1995-2000: C 200 CDI, C 220 CDI, C 270 CDI, C 180, C 200 K,C 230 K, C 220, C230, C 280

1999 C230 Low side port for A/C

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Sep 6, 2013 | 01:20 PM
  #1  
wggjs's Avatar
Thread Starter
Newbie
 
Joined: Sep 2013
Posts: 3
Likes: 0
99 c230
1999 C230 Low side port for A/C

Does anyone have a picture of where this port is? I have read so many descriptions, looked up, down and sideways. Even the mechanic couldn't find it. There is a black capped gizmo sitting behind the compressor, but the size is wrong so it must be the high side. Appreciate any help!!
I see two other people were looking for it, one guy had over 1000 views with no reply!

Last edited by wggjs; Sep 6, 2013 at 01:26 PM.
Reply
Old Sep 6, 2013 | 11:01 PM
  #2  
PTVC230K's Avatar
Junior Member
 
Joined: Aug 2011
Posts: 37
Likes: 1
2016 SLK 300
Charged mine up not long ago. Took a while to find, but it was mostly me looking at it from the wrong angle. I tried to center it, just unscrew the black plastic cover.

1999 C230 Low side port for A/C-img_2513_zps331f0c0b.jpg
Reply
Old Sep 6, 2013 | 11:08 PM
  #3  
wggjs's Avatar
Thread Starter
Newbie
 
Joined: Sep 2013
Posts: 3
Likes: 0
99 c230
Wow, a picture, excellent!

But, I connected to that one with my A/C Pro (black can) and the adapter doesn't fit which told me that's the high side? Where is the other connector then, there must be a high and low, right?
Reply
Old Sep 6, 2013 | 11:12 PM
  #4  
PTVC230K's Avatar
Junior Member
 
Joined: Aug 2011
Posts: 37
Likes: 1
2016 SLK 300
Will have to play around tomorrow. Bought the same can a few months back, had trouble remembering where I connected it.
Will check tomorrow morning. I did find it once, and I thought that was it. The can connected differently than my previous version. Just pushed it straight on, not like the older quick connects.
Will take a photo tomorrow with the connector connected to the right one, if that is not it.
Reply
Old Sep 7, 2013 | 07:03 AM
  #5  
PTVC230K's Avatar
Junior Member
 
Joined: Aug 2011
Posts: 37
Likes: 1
2016 SLK 300
Connected up this AM, that one is the low pressure side. The A/C Pro one connects just by pushing straight down, no need to pull back the bottom of the quick connect. Only do that to release it.
I have only looked for the high pressure port on my Jeep, and the high pressure port is quite noticeably larger there.

Anyway, as promised, here is the photo.
Doubt they are much different, but mine is a 2000 C230 K. They are very similar, but I doubt the AC and engine bay layout are too much different. One obvious difference may be the black pipe the can is leaning on, that is repositioned in 2000 as it passes by the intercooler first.

Mine was barely blowing mildly cool, but after the charge, is super cold.

1999 C230 Low side port for A/C-img_2515_zps356044a0.jpg

Good luck,
Paul
Reply
Old Sep 7, 2013 | 01:04 PM
  #6  
wggjs's Avatar
Thread Starter
Newbie
 
Joined: Sep 2013
Posts: 3
Likes: 0
99 c230
Paul solved my problem

Thank you so much; for being quick, providing pictures and being exacting! So many times people go round and round. Pictures speak a thousand words Paul. I had to mess around with the connector is all. It is freezing COLD now!
Reply
Old Sep 7, 2013 | 02:06 PM
  #7  
PTVC230K's Avatar
Junior Member
 
Joined: Aug 2011
Posts: 37
Likes: 1
2016 SLK 300
So happy you got it all figured out. Cold air is a great thing to have back.
Glad I could help out.
Reply
Old May 18, 2015 | 07:25 PM
  #8  
lordofthering's Avatar
Member
 
Joined: Mar 2011
Posts: 78
Likes: 2
From: NJ
2008 ML320 (W164) - 201K Miles
Originally Posted by PTVC230K
Connected up this AM, that one is the low pressure side. The A/C Pro one connects just by pushing straight down, no need to pull back the bottom of the quick connect. Only do that to release it.
I have only looked for the high pressure port on my Jeep, and the high pressure port is quite noticeably larger there.

Anyway, as promised, here is the photo.
Doubt they are much different, but mine is a 2000 C230 K. They are very similar, but I doubt the AC and engine bay layout are too much different. One obvious difference may be the black pipe the can is leaning on, that is repositioned in 2000 as it passes by the intercooler first.

Mine was barely blowing mildly cool, but after the charge, is super cold.



Good luck,
Paul
Hi,
What type of refrigerant it takes ? R134A or R134A+ will work ? Do I need any conversion kits /

Thanks
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old May 18, 2015 | 09:49 PM
  #9  
PTVC230K's Avatar
Junior Member
 
Joined: Aug 2011
Posts: 37
Likes: 1
2016 SLK 300
R134a has been standard since the mid 90's, so I doubt the previous owner(s) did anything.

The coolant I used just indicates R134a, I believe the + indicates something added to standard R134a, which the one I used likely does as it has lubricant and leak stop additive.

It is still working great, which is more than I can say for my Jeep, I need to take that in as it is more than just low.
Reply
Old Nov 12, 2019 | 06:39 PM
  #10  
Art Bell's Avatar
Newbie
 
Joined: Nov 2019
Posts: 1
Likes: 0
c230 komoressor coupe, ml350
Pic


W203 ac diagram
Reply
Old Dec 16, 2019 | 06:59 AM
  #11  
paste's Avatar
Senior Member
5 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Jul 2018
Posts: 310
Likes: 49
From: AZ
I heard that they are going to stop selling R134 after Jan 1st so it might be worth stocking up a few cans.
Reply
Old Sep 26, 2020 | 04:46 PM
  #12  
tobybul's Avatar
Junior Member
 
Joined: Feb 2007
Posts: 16
Likes: 0
From: Near Salmon and Steelhead Streams
85 300D, 84 300D, 96 C220
bump

Last edited by tobybul; Sep 26, 2020 at 04:49 PM.
Reply
Old Sep 26, 2020 | 04:47 PM
  #13  
tobybul's Avatar
Junior Member
 
Joined: Feb 2007
Posts: 16
Likes: 0
From: Near Salmon and Steelhead Streams
85 300D, 84 300D, 96 C220
Originally Posted by PTVC230K
Connected up this AM, that one is the low pressure side. The A/C Pro one connects just by pushing straight down, no need to pull back the bottom of the quick connect. Only do that to release it.
I have only looked for the high pressure port on my Jeep, and the high pressure port is quite noticeably larger there.

Anyway, as promised, here is the photo.
Doubt they are much different, but mine is a 2000 C230 K. They are very similar, but I doubt the AC and engine bay layout are too much different. One obvious difference may be the black pipe the can is leaning on, that is repositioned in 2000 as it passes by the intercooler first.

Mine was barely blowing mildly cool, but after the charge, is super cold.

Attachment 377241

Good luck,
Paul
Hi PTVC230K, sorry to ask but I am not clear on this pic. Where is the low pressure port here?
Reply
Old Sep 27, 2020 | 12:28 AM
  #14  
paste's Avatar
Senior Member
5 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Jul 2018
Posts: 310
Likes: 49
From: AZ
Originally Posted by tobybul
Hi PTVC230K, sorry to ask but I am not clear on this pic. Where is the low pressure port here?
drivers side
Reply
Old Oct 1, 2020 | 05:11 AM
  #15  
Laubscherc's Avatar
Junior Member
 
Joined: Jan 2008
Posts: 36
Likes: 1
From: Pretoria
W202 C200 1998, W123 200 1982, W123 230E 1982

Remove the Windows Washer bottle (1 x 10mm plastic bolt then pull it up). You will see the low pressure port almost where the AC hose connects to the AC compressor.

Last edited by Laubscherc; Oct 1, 2020 at 05:14 AM.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 11:38 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE