C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

2006 c230 issues. please help

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Aug 13, 2017 | 02:31 PM
  #1  
BoxBust's Avatar
Thread Starter
Newbie
 
Joined: Apr 2015
Posts: 3
Likes: 0
2006 Mercedes C230
2006 c230 issues. please help

I got a few crazy things going on with my car and I think they all may be related and was wondering if anyone has any ideas before I take it to the stealership to pay for a bunch of stuff i don't need just to get what I do need.

First when the car first starts in the morning there is a loud squeal that shuts off after about 2 mins. when it turns off it sounds like a motor shutting down and then the car sounds fine. (Alternator maybe?)

Next when I have the A/C on on a hot day acceleration is so slow to almost non existent.

My ambient air temperature sensor will go crazy and read +185 or -75. It goes back and forth. I have replaced the sensor and it fastened into its spot very snugly. When the temp goes back to right, the check engine light will shut off after 3 starts of the temp gauge working.

If its just a normal day, not to extreme in temps and im not using the A/C the car will run just fine. Get up is great, temp sensor stays working. I still get the Squeal in the morning but after that, it sounds fine through out the day.

I did replace the MAF sensor.

As i write this it got me thinking that some belt needs to be replaced or something. If it was you guys, what would be your first step to get this fixed. The only CE code thrown is the ambient air temperature sensor.
Reply
Old Aug 14, 2017 | 09:03 AM
  #2  
OneAdam12's Avatar
Junior Member
 
Joined: Jul 2017
Posts: 41
Likes: 9
2006 C230 Sport
How does the A/C run when you turn it on? Is there anyway you can try to pinpoint the sound to see if it's coming from the A/C compressor?
Reply
Old Aug 14, 2017 | 09:15 AM
  #3  
alecmascot's Avatar
Super Member
5 Year Member
Liked
 
Joined: Jul 2016
Posts: 502
Likes: 81
From: Newcastle Upon Tyne
W204 C220CDI 2011
Is this an M271 or an M272 engine ?
Reply
Old Aug 17, 2017 | 02:22 PM
  #4  
DAVECAD2.0's Avatar
Junior Member
 
Joined: Dec 2008
Posts: 36
Likes: 7
1991 420 SEL
squeal

If this is a M272 V6 try this. Get a length of heater hose to use as a hearing aid. Have someone start the engine while you listen. Listen at the A/C compressor. Possible clutch issue. Also, these engines are noted for aux air pump bearing failures. It's the round black component at the top front center of the engine. These can be removed, disassembled, and oiled. The air pump only runs for about two minutes after cold start-up to heat up the cats. If the A/C clutch is bad it will squeal every time it cycles on.
Also have a 2006 V6 and that's all the squeal issues I can think of.

Good luck, Dave
Reply
Old Aug 19, 2017 | 10:48 AM
  #5  
DAVECAD2.0's Avatar
Junior Member
 
Joined: Dec 2008
Posts: 36
Likes: 7
1991 420 SEL
Box:
Maybe you could help me with a wire connector location.
I recently removed my engine to replace my balance shaft.
Upon hooking up all the wire connections, I found one I can't figure out.
It's two wires in a black sheath that is attached to the drivers side front cam cover. Ine wire is long, and the other half as long. The long one attaches to the A/C compressor. The short one I can't figure out. There is nothing for it to attach to between the compressor and where it's anchored to the cam cover. The only components nearby are the power steering pump/reservoir and the engine oil cooler. Can't find any connections on them.

Thanks for any help, Dave.
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 05:39 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