CL55 AMG, CL65 AMG, CL63 AMG (C215, C216) 2000 - 2014 (Two Generations)

Cold start, fluctuating/surging at idle rpms.. Cause/solution?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Nov 5, 2012 | 03:30 PM
  #1  
nidyanazo's Avatar
Thread Starter
Banned
 
Joined: Nov 2012
Posts: 331
Likes: 9
550HP+ ///AMG CL55 Kompressor, Ducati 916bp, Yamaha R1 WSBK replica
Question Cold start, fluctuating/surging at idle rpms.. Cause/solution?

Hey I was wondering if you guys had and insight as to what this may be..

Left the car for a couple days without starting it and then came out today to drive it. Upon starting the motor I could feel the idle going up and down 'surging' if you will. The RPMS fluctuated up and down a few hundred, but it stopped after about 30 seconds, once the motor came up to temp.

Any Ideas? Thanks
Reply
Old Nov 5, 2012 | 10:16 PM
  #2  
nidyanazo's Avatar
Thread Starter
Banned
 
Joined: Nov 2012
Posts: 331
Likes: 9
550HP+ ///AMG CL55 Kompressor, Ducati 916bp, Yamaha R1 WSBK replica
Also hear a kind of fluttering fltha fltha fltha sound haha, sorry I guess I'll try to video the noise.. Wondering if that's the "S-49_10-08 FEB 04 Exhaust System - Rattling/Hissing/Humming Noises " TSB..

hmmm... Anyone else have similar symptoms?
Reply
Old Nov 9, 2012 | 10:18 PM
  #3  
nidyanazo's Avatar
Thread Starter
Banned
 
Joined: Nov 2012
Posts: 331
Likes: 9
550HP+ ///AMG CL55 Kompressor, Ducati 916bp, Yamaha R1 WSBK replica
Hrm, it did it again today, so I ordered 16 new iridium plugs. Also doing an oil change with the 0w-40 mobile synthetic, replacing the fuel filter, installing a new hi-flo IC pump (thanks for the tip radride) splashing a bit of seafoam in the tank, and a bottle of water wetter in the radiator.
That should do for a nice tuneup.

edit I forgot to add, K&N air filters too.

Last edited by nidyanazo; Nov 9, 2012 at 10:50 PM.
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 09:15 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