Is my erg valve causing my bad idle?
01-15-2017, 03:28 PM
#1
MBWorld Fanatic!
Thread Starter
Join Date: Aug 2015
Location: DC Metro Area
Posts: 1,059
Received 72 Likes
on
56 Posts
2007 Mercedes E550
Is my erg valve causing my bad idle?
Chasing down causes for my bad idle, I realized that the erg valve may be the culprit. When I start the car, after a few minutes, I hear a hissing sound which I think is erg valve opening. At the same time, the idle becomes eratic. I cleaned the erg valve the best I could, but could not remove because my aftermarket headers are in the way.
anyone have any suggestions??
anyone have any suggestions??
01-18-2017, 09:56 AM
#2
MBWorld Fanatic!
Join Date: Dec 2003
Location: Vancouver, BC, Canada
Posts: 3,047
Likes: 0
Received 197 Likes
on
188 Posts
2003 C230K Coupe Orion Blue
Check the hoses leading into the EGR (1 big one, 2 small ones) as well. During routine maintenance recently I discovered all 3 had cracked. Be sure the check the entire lengths of the hoses, including the thin one that snakes across the top of the engine and over to the intake.
The following users liked this post:
LexBrett2 (01-18-2017)
01-18-2017, 10:26 AM
#3
MBWorld Fanatic!
Thread Starter
Join Date: Aug 2015
Location: DC Metro Area
Posts: 1,059
Received 72 Likes
on
56 Posts
2007 Mercedes E550
Check the hoses leading into the EGR (1 big one, 2 small ones) as well. During routine maintenance recently I discovered all 3 had cracked. Be sure the check the entire lengths of the hoses, including the thin one that snakes across the top of the engine and over to the intake.
I also saw a mercedessource video where they pressure tested the ERG valve.
If it doesn't hold pressure, needs to be replaced...
