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

Power loss on 2002 c230 coupe automatic

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jan 23, 2013 | 06:45 PM
  #1  
Neilleaf's Avatar
Thread Starter
Newbie
 
Joined: Jan 2013
Posts: 1
Likes: 0
2002 c230k coupe auto
Power loss on 2002 c230 coupe automatic

Hi all, please offer any insights:

I have a 2002 c230 coupe automatic, the 1.8 engine, not the 2.3.

Since having it serviced about 3000 miles ago the car seems at least 20% down on power, the fuel consumption has also been similarly effected. The best mpg i can get being very very careful is 12.5 litres per 100kms (half highway, half city) {18mpg}

The garage that serviced it put in slightly too much oil and the computer threw a warning code of "too much oil" but it went away after 2weeks. The one cam sensor solenoid has always been a bit oily, i try clean it when i remember.

The car is not stalling,stuttering or misfiring but its just not the same car. I have to give it a firmer prod on the gas pedal to make it shift down a gear.

Any ideas of what it could be? I would like some ideas before i take it in to be looked at. Hate when you get quoted for a fix and it comes back exactly the same. Please help
Reply
Old Jan 23, 2013 | 09:49 PM
  #2  
Glyn M Ruck's Avatar
Super Moderator
MBWorld Ambassador

 
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Can you tell us exactly what they did at the service & is on your invoice? Do you know if oil has got into the engine harness from the leaking cam magnet? Is there any sign of oil from the harness at the upstream O2 sensor? Is the car storing any codes?

It is evident that your air/fuel ratio is out & I'm trying to work out why.
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 06:02 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