Please Help! Check Engine + rough idle problem
Thread Starter
Junior Member
Joined: Feb 2006
Posts: 19
Likes: 0
From: CA
4-wheel ones
Please Help! Check Engine + rough idle problem
My mom's 1996 E320 with 125000 miles is starting to have more and more problems.
At around 100000 miles, Check engine light came on and to make a LONG story short, we haven't been able to fix the problem still. We've gone to a few shops + dealer and it still won't go off!!
Recently we got a diagonistics done and the error codes are
P0411 EVAP system incorrect purge flow
P0400 EGR flow malfunction
Now the car is having a rough idle problem + RPM jumping at freeway.
Not sure if this is a sign to sell the car, but I hope this isn't some serious problem.
Now I did search and P0400 may be fixed by replacing Air Mass Meter?
Thank you so much!
At around 100000 miles, Check engine light came on and to make a LONG story short, we haven't been able to fix the problem still. We've gone to a few shops + dealer and it still won't go off!!
Recently we got a diagonistics done and the error codes are
P0411 EVAP system incorrect purge flow
P0400 EGR flow malfunction
Now the car is having a rough idle problem + RPM jumping at freeway.
Not sure if this is a sign to sell the car, but I hope this isn't some serious problem.
Now I did search and P0400 may be fixed by replacing Air Mass Meter?
Thank you so much!
MBWorld Fanatic!
Joined: Sep 2005
Posts: 6,199
Likes: 243
From: Albuquerque
'10 CL550, '12 GL550
You'll lose more on depreciation on a new(er) car than you'll pay a dealer to fix this problem. Just bite the bullet and take car to someone who knows what they're doing.
Thread Starter
Junior Member
Joined: Feb 2006
Posts: 19
Likes: 0
From: CA
4-wheel ones
Originally Posted by lkchris
You'll lose more on depreciation on a new(er) car than you'll pay a dealer to fix this problem. Just bite the bullet and take car to someone who knows what they're doing.
I want some permanant fix, therefore, I came here to seek advice from knowledgable MB owners/enthusiasts! 
Newbie
Joined: Mar 2006
Posts: 10
Likes: 0
Originally Posted by skim
My mom's 1996 E320 with 125000 miles is starting to have more and more problems.
At around 100000 miles, Check engine light came on and to make a LONG story short, we haven't been able to fix the problem still. We've gone to a few shops + dealer and it still won't go off!!
Recently we got a diagonistics done and the error codes are
P0411 EVAP system incorrect purge flow
P0400 EGR flow malfunction
Now the car is having a rough idle problem + RPM jumping at freeway.
Not sure if this is a sign to sell the car, but I hope this isn't some serious problem.
Now I did search and P0400 may be fixed by replacing Air Mass Meter?
Thank you so much!
At around 100000 miles, Check engine light came on and to make a LONG story short, we haven't been able to fix the problem still. We've gone to a few shops + dealer and it still won't go off!!
Recently we got a diagonistics done and the error codes are
P0411 EVAP system incorrect purge flow
P0400 EGR flow malfunction
Now the car is having a rough idle problem + RPM jumping at freeway.
Not sure if this is a sign to sell the car, but I hope this isn't some serious problem.
Now I did search and P0400 may be fixed by replacing Air Mass Meter?
Thank you so much!
