Rattling 1.8 Engine at Idle - sounds cheap
Thread Starter
Almost a Member!
Joined: Mar 2003
Posts: 32
Likes: 0
From: Lansing, MI
2003 C230 Kompressor Coupe
Rattling 1.8 Engine at Idle - sounds cheap
Just wondering if this a normal condition for these '03 1.8 motors or if I might have a problem.
The engine sounds terrible at idle- like a cheap GM 4 cylinder with lifter rattle.
Overall I love the coupe and it runs strong- it's just a little disappointing in this caliber of a car.
Also I have been away from this forum for a while- has there been any news on the intermittant hesitation on hard acceleration?
Thanks for any info!
The engine sounds terrible at idle- like a cheap GM 4 cylinder with lifter rattle.
Overall I love the coupe and it runs strong- it's just a little disappointing in this caliber of a car.
Also I have been away from this forum for a while- has there been any news on the intermittant hesitation on hard acceleration?
Thanks for any info!
MBWorld Fanatic!
Joined: Aug 2002
Posts: 3,364
Likes: 13
From: New Jersey
SLS AMG | S65 AMG | GL550
Re: Rattling 1.8 Engine at Idle - sounds cheap
Originally posted by KOMPCOUPE03
Also I have been away from this forum for a while- has there been any news on the intermittant hesitation on hard acceleration?
Also I have been away from this forum for a while- has there been any news on the intermittant hesitation on hard acceleration?
Erik
MBWorld Fanatic!
Joined: Feb 2003
Posts: 1,415
Likes: 340
From: Charlotte, NC
Had: 1987 300TD, Had: 2004 C230 Sport Sedan, Have: 2014 E350 Sport, Have: 2019 S450
The sound is probably the supercharger, rather than the engine rattling.
I can hear mine 'rattle' at the drive-thru window, if my window is open. From inside the car, you can't hear the rattle. For this reason, I don't believe it's the engine (which you would probably hear at all times - even in the car).
I can hear mine 'rattle' at the drive-thru window, if my window is open. From inside the car, you can't hear the rattle. For this reason, I don't believe it's the engine (which you would probably hear at all times - even in the car).
Thread Starter
Almost a Member!
Joined: Mar 2003
Posts: 32
Likes: 0
From: Lansing, MI
2003 C230 Kompressor Coupe
"I can hear mine 'rattle' at the drive-thru window, if my window is open. From inside the car, you can't hear the rattle. For this reason, I don't believe it's the engine (which you would probably hear at all times - even in the car)."
__________________
Right- I dont hear the noise inside the car- just outside and next to buildings- drive-thrus and such.
Engine or SC it's not good either way.
I will be going in for the first scheduled maintanence soon and I will see what they say.
__________________
Right- I dont hear the noise inside the car- just outside and next to buildings- drive-thrus and such.
Engine or SC it's not good either way.
I will be going in for the first scheduled maintanence soon and I will see what they say.
MBWorld Fanatic!
Joined: Feb 2003
Posts: 1,415
Likes: 340
From: Charlotte, NC
Had: 1987 300TD, Had: 2004 C230 Sport Sedan, Have: 2014 E350 Sport, Have: 2019 S450
Yes, certainly it doesn't have a 'refined' sound to it, but I don't believe that it is a reliability issue.
Keep in mind that the supercharger is simply a belt-driven air compressor. If you've ever worked around compressors, you know that they make noise when operating, and I don't know how you could resolve that (other than isolating it in a sound-insulated box of some type).
This may be part of the reason that MB seems to be getting away from superchargers in their product line-up.
Keep in mind that the supercharger is simply a belt-driven air compressor. If you've ever worked around compressors, you know that they make noise when operating, and I don't know how you could resolve that (other than isolating it in a sound-insulated box of some type).
This may be part of the reason that MB seems to be getting away from superchargers in their product line-up.
Trending Topics
Member
Joined: Sep 2002
Posts: 138
Likes: 0
From: So. California
2002 C230K, Auto, etc.
Rattling sound
The engine sounds terrible at idle- like a cheap GM 4 cylinder with lifter rattle.
------------------------------------------------------------------------------------
The noise you hear is the blowoff value open during warmup. It lets the converter get up to temperature to cut down on emissions. Nothing to worry about. It's just one of the quirks of owning this type of car. My 2002 does it really bad on startup but quits within a minute or so and the idle smooths out. Once you know what it is I kind of enjoy the sound!!!
Keep in mind the supercharger is only working when needed; the rest of the time it's just spinning along. Enjoy your car and stop worrying about nothing.
------------------------------------------------------------------------------------
The noise you hear is the blowoff value open during warmup. It lets the converter get up to temperature to cut down on emissions. Nothing to worry about. It's just one of the quirks of owning this type of car. My 2002 does it really bad on startup but quits within a minute or so and the idle smooths out. Once you know what it is I kind of enjoy the sound!!!
Keep in mind the supercharger is only working when needed; the rest of the time it's just spinning along. Enjoy your car and stop worrying about nothing.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Member
Joined: Mar 2003
Posts: 154
Likes: 0
From: Greensboro, NC
00' ML 55 AMG; 08' Jeep Wrangler Unlimted (4 Door)
Othe members have had this problem, STFF for Purge Valve. One had MB replace the Mounting clip on the purge valve abd it fixed the problem.
https://mbworld.org/forums/showthrea...ighlight=valve
https://mbworld.org/forums/showthrea...ighlight=valve
