SPONSORED LINKS

Noisy cold start, check engine light on

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
The issue is that I was going by my US spec manual for that C230.
You are not in US correct?
So I will have to assume you have the Euro spec C230, which has different smog/emission related component.
After doing some more checking. I believe this is the secondary air pump for your C230 (picture below).
Can you confirm if that part has a tubing that goes to the intake?
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, August 1st, 2021 AT 5:17 PM
Tiny
VIVEKHB
  • MEMBER
  • 89 POSTS
Sir, I am from Montreal, Canada. The part you circled in red is the throttle body.
I recollect very well that the vacuum valve solenoid has three rubber hoses, one attaches to the intake manifold and two attach to the EGR valve, the one that I cleaned yesterday.I have attached the photos below.
Thanks once again.
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Sunday, August 1st, 2021 AT 6:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Hi,

I noticed it has been a couple of days since you have been contacted. Has any progress been made? We are interested in knowing.

Let us know what we can do to help.

Joe
Was this
answer
helpful?
Yes
No
Tuesday, August 3rd, 2021 AT 10:54 PM
Tiny
VIVEKHB
  • MEMBER
  • 89 POSTS
Hi Joe, I am basically waiting for a reply from your part. I was asked to clean the vacuum valve on the intake side of the manifold, but I don't see any valve. Please direct me, thanks in advance.
Was this
answer
helpful?
Yes
No
Wednesday, August 4th, 2021 AT 1:19 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Hi,

No problem. I read back through the threads and found a picture that you sent us. I copied it and attached it below. That is what you are looking for.

Joe
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
-1
Wednesday, August 4th, 2021 AT 10:10 PM
Tiny
VIVEKHB
  • MEMBER
  • 89 POSTS
Hi Joe, I have cleaned the EGR valve and the check engine light came back after 20km.I don't see the actuator valve on the intake manifold. Please your direction is highly appreciated.
Was this
answer
helpful?
Yes
No
Thursday, August 5th, 2021 AT 12:51 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
That valve is a back pressure valve, not an actuator.

The EGR gets carbon up on the shaft and you cannot access it for cleaning. The only way is to replace the valve.

Roy
Was this
answer
helpful?
Yes
No
Saturday, August 7th, 2021 AT 5:52 PM
Tiny
VIVEKHB
  • MEMBER
  • 89 POSTS
Thank you Roy, I will change the EGR valve and let you know the outcome. Have a blessed Sunday.
Was this
answer
helpful?
Yes
No
Sunday, August 8th, 2021 AT 3:38 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Roy
Was this
answer
helpful?
Yes
No
Sunday, August 8th, 2021 AT 4:28 PM
Tiny
VIVEKHB
  • MEMBER
  • 89 POSTS
Hi Roy, I replaced the EGR valve and after 32 km of driving the check engine light has come back. Please, waiting for your expert opinion.

Vivek
Was this
answer
helpful?
Yes
No
Thursday, August 26th, 2021 AT 5:20 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Is the valve being commanded open?
You can heck by accelerating the throttle from under the hood and see if the valve opens and closes.

Roy
Was this
answer
helpful?
Yes
No
Friday, August 27th, 2021 AT 4:55 AM
Tiny
VIVEKHB
  • MEMBER
  • 89 POSTS
Thanks Roy for reply. Please Roy let me know as to how to check the opening and closing of the valve on acceleration. Thanks in advice.
Vivek
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, August 27th, 2021 AT 4:29 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
When you raise the engine RPM, the valve should open and close depending on the load.

Roy
Was this
answer
helpful?
Yes
No
Friday, August 27th, 2021 AT 9:13 PM
Tiny
VIVEKHB
  • MEMBER
  • 89 POSTS
I didn't get exactly what your saying Roy, but I will try and come back to you. Thanks once again Roy.
Vivek
Was this
answer
helpful?
Yes
No
Sunday, August 29th, 2021 AT 9:43 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Roy
Was this
answer
helpful?
Yes
No
Sunday, August 29th, 2021 AT 9:55 AM

Please login or register to post a reply.

Related Check Engine Light Content

Code Read Retrieval/Clear Mercedes Benz
VIDEO
Code Read Retrieval/Clear Mercedes Benz
Instructional repair video
Check Engine Light
GUIDE
Check Engine Light
Why is my check engine or service engine soon turned on? In this guide we talk about what this is associated with this notorious light, what it is used for and what you...
VIEW MORE

Sponsored links