C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

RPM is getting unstable at first run

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jan 3, 2018 | 06:25 PM
  #1  
gabyuuu's Avatar
Thread Starter
Newbie
 
Joined: Dec 2017
Posts: 3
Likes: 0
C220 W204
RPM is getting unstable at first run

Hi,
I'm driving a W204 C220 from 2007 and I'm facing the following issues:
  • In each morning when the outside temperature is lower than 10 degrees Celsius my car is going crazy. For about 2 kilometers ( maybe after something is getting heated up ) when I'm accelerating but very gentile the engine revs up and down on it's own even the gas pedal is almost steady as position. For better explanation please watch the video (best at 1:47 ) :
    . I have started to have this issue since the winter came ( around 1 month ). After those 2 kilometers all is running smooth even during the rest of the day. The trans fluid was changed 30.000 kilometers ago ( at 150k )
  • Monday I had to go out of town and I've noticed that the coolant I added ~ 2 months ago it's gone ( the coolant warning appeared for a short time , after checking the coolant container I saw that the level is not the same as then ) also I noticed that the thermostat needs to be changed cause the temperature is not getting higher than 60 degrees .
Anyone that faced or heard about this issue before? Can the coolant miss and the fact that I have to change the thermostat contribute to the "revs" issue?

Thanks in advance for all the help provided!

Last edited by gabyuuu; Jan 5, 2018 at 03:26 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 09:06 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