MBWorld.org Forums

SL55 AMG, SL63 AMG, SL65 AMG (R230) 2002 - 2011 (2003 US for SL55 and 2004 for the SL65)

SL55/63/65/R230 AMG: General a/c question...

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jul 18, 2016 | 08:14 AM
Share
  #1  
Tomcat SL's Avatar
Tomcat SL
Thread Starter
Senior Member
10 Year Member
Photogenic
Liked
 
Joined: Feb 2016
Posts: 328
Likes: 22
2004 SL55 AMG
General a/c question...
This site is so knowledgeable I thought I'd ask...
On a different German sedan my a/c quit blowing cold.
My pressure manifolds are reading:
Overnight, system off Low 90 psi, High 90 psi (so they normalize)
Start car and compressor the low bumps to 95 psi then settles back to 90psi...High goes to 0 psi.
Any suggestions?
Reply
0
Old Jul 18, 2016 | 09:19 AM
Share
  #2  
Tomcat SL's Avatar
Tomcat SL
Thread Starter
Senior Member
10 Year Member
Photogenic
Liked
 
Joined: Feb 2016
Posts: 328
Likes: 22
2004 SL55 AMG
Thanks.
This is what I was leaning towards.
So if I bleed off the residual 90 psi I have and add Freon...you think the compressor will not "make pressure"?
Tom
Originally Posted by Plutoe
Your compressor is shot(unable to make pressure) and assumes that you have the required amount of refrigerant in the system!! However if no refrigerant=no pressure!!
Reply
0
Old Jul 18, 2016 | 10:35 AM
Share
  #3  
Tomcat SL's Avatar
Tomcat SL
Thread Starter
Senior Member
10 Year Member
Photogenic
Liked
 
Joined: Feb 2016
Posts: 328
Likes: 22
2004 SL55 AMG
When I depress the pin on the low side valve, I get a lot of pressure with visible gas...gaseous Freon I'm assuming.
Reply
0
Back to Subforum
SL55 AMG, SL63 AMG, SL65 AMG (R230)
View Next Unread
First Look at the ALL-NEW HRE Monoblocks – P2 Series presented by Wheels Boutique

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


You have already rated this thread Rating: Thread Rating: 0 votes, average.
Show Printable Version
Email this Page

Advanced Search

All times are GMT -4. The time now is 02:05 AM.

story-0
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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