1994 E320 running badly
Thread Starter
Junior Member
Joined: May 2003
Posts: 53
Likes: 0
From: Cincinnati,Oh.
2000 AMG ML55
1994 E320 running badly
My friend has a 1994 E320 with 128k miles on it. The car has started to run poorly. The idle is dropping to 500rpm and then racing to 1000-1200rpm and then drops to 750 after a short period. The idle is very rough. Slow acceleration is normal but the car feels like it is missing on kickdown. Light black smoke is evident when the car is running rough. This issue is hit and miss. It happens at cold start up sometimes and can happen after the car is warm and has been driven. The issue does not happen every time the car is driven.
Any possibilities???
Any possibilities???
Super Member
Joined: May 2003
Posts: 696
Likes: 4
From: Motor City
95 E320 Cabriolet, 108K
You can probably tell by looking at the present wiring. Remove some of the black tape and look at the wiring insulation. If it's cracked and flaking, it's probably the original wiring and needs to be replaced. There's a very good chance this is the problem.
Do a search using "engine wiring harness" for more information on this subject.
Do a search using "engine wiring harness" for more information on this subject.
Junior Member
Joined: Oct 2002
Posts: 29
Likes: 0
From: Bristol, UK
MB E280
If i was you i check teh spark plugs the same time. Compare the looks between the cylinders.
Wiring harnest is proably the reason, as you where adviced earlier. Check that first.
Daniel
Wiring harnest is proably the reason, as you where adviced earlier. Check that first.
Daniel
Newbie
Joined: Feb 2004
Posts: 2
Likes: 0
From: Brisbane, Australia
1993 E220 Sedan
Idle broblems with 1993 E220
HI,
I have a 1993 E220 Sedan that is having similar issues to your vehicle. Have you solved the problem? My service agent is advising me to change the computer, but will not guarantee that this will fix the problem. Hope you can help.
Patrick
I have a 1993 E220 Sedan that is having similar issues to your vehicle. Have you solved the problem? My service agent is advising me to change the computer, but will not guarantee that this will fix the problem. Hope you can help.
Patrick
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Newbie
Joined: Feb 2004
Posts: 10
Likes: 0
From: Central Alabama
93 300E
Originally posted by jsolano
I had a similar problem, and it turned out to be the air mass flow sensor.
I had a similar problem, and it turned out to be the air mass flow sensor.
Super Member
Joined: May 2003
Posts: 696
Likes: 4
From: Motor City
95 E320 Cabriolet, 108K
Unfortunately, it could be a bad throttle actuator. These suffer from the same crumbling wire disease that the engine wiring harness suffers. Cost for replacement is over $1000 USD for this part.
