1995 E420 - deja vu chug chug chug... - Page 2 - Mercedes-Benz Forum
Reply
 
LinkBack Thread Tools Display Modes
post #11 of 17 (permalink) Old 08-10-2019, 08:43 PM
Lifetime Premium Member
 
magicbigdaddy's Avatar
 
Date registered: Dec 2006
Vehicle: 1989 560 SEC - V-8 Kompressor - 95 E320 Estate
Location: Edmonds, WA
Posts: 1,817
Mentioned: 15 Post(s)
Quoted: 334 Post(s)
Lifetime Premium Member
Quote:
Originally Posted by tuttebenne View Post
Maybe you don't have a lot of M119 experience? Dust shields are a huge issue these days on M119s. You can get away with it on an M103 or some others but not on a 20+ year old M119.
My experience with m119 ranges from w124, R129 and w140. This along with my local indie that worked for MB dealership in Seattle area when these cars were new is what I have experienced. Again an ultra low mileage m119 the chances that the insulators would be more suspect than a original eco junk wiring harness would not be the recommended next step to cure this issue. If all the insulator dust shields failed at 30-40k miles I think this issue would have been brought up many years ago. The OP has spent way too much money repeating the same chaotic advise from techs that do not know m119. If the wiring harness is fresh and the issue still occurs I would definitely change the insulators as the next step. I honestly believe if this post was on the 500e board that OP would receive this same advise. Mike


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
1989 560 SEC Supercharged - 317+ rwhp - H&R lowered - OZ 3 piece staggered wheels - upgraded brakes - AMG Tri-Y's - Bergwerks FGS - a true Euro Rod

1981 500SE euro AMG
1985 euro 500SEC
1986 560 SEC
1985 500SEL
1989 560SEC
1990 560SEL
1987 euro 560SEL 300hp 822 engine option
magicbigdaddy is offline  
Sponsored Links
Advertisement
 
post #12 of 17 (permalink) Old 08-11-2019, 11:46 AM
BenzWorld Elite
 
tuttebenne's Avatar
 
Date registered: Jul 2005
Vehicle: W124
Location: Long Island
Posts: 4,578
Mentioned: 6 Post(s)
Quoted: 491 Post(s)
Granted, the build date on the harness should be verified to rule it out or in. That is just good long term insurance and maybe, just maybe, it will fix this problem.

However, the car has been to two Benz dealers and neither brought up the harness as an issue. Since its the biggest issue with a 124 of this era, I would think a Benz dealer tech would start with the harness issue and work his way down the pecking order of potential issues. Sure, the quality of a dealer tech could be a discussion point but we are talking about two dealers and at least two techs. But as you say, it should be checked just to be sure.

Having said all this, my recommendation was based on the following in the opening post (as well as the fact that the problem went away each time the caps were changed):

"Car develops a bad miss that gets progressively worse. If she is driven every day there is no noticeable problem. If I skip a day I can expect that she will start up beautifully, and drive beautifully until about 15 minutes in and at the next redlight it will begin - chug chug chug. "

Obviously we both have our opinions on what will resolve this and hopefully the OP will let us know. Conventional wisdom (here, on the 500e board, and elsewhere) indicates the description by the OP is a classic description of an insulator issue. If it were a harness issue, it would be a significant "reach" to explain how the engine ran fine, without problems, for months upon months following replacement of the caps and wires - and it did this twice.
Jayare likes this.
tuttebenne is offline  
post #13 of 17 (permalink) Old 08-11-2019, 06:11 PM
Lifetime Premium Member
 
magicbigdaddy's Avatar
 
Date registered: Dec 2006
Vehicle: 1989 560 SEC - V-8 Kompressor - 95 E320 Estate
Location: Edmonds, WA
Posts: 1,817
Mentioned: 15 Post(s)
Quoted: 334 Post(s)
Lifetime Premium Member
One item we all can agree upon is to NOT buy the insulators from the dealership but from the link "tuttebenne" provided earlier in this post. I checked with the dealer a couple years ago and they quoted over $230 for each insulator.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
1989 560 SEC Supercharged - 317+ rwhp - H&R lowered - OZ 3 piece staggered wheels - upgraded brakes - AMG Tri-Y's - Bergwerks FGS - a true Euro Rod

1981 500SE euro AMG
1985 euro 500SEC
1986 560 SEC
1985 500SEL
1989 560SEC
1990 560SEL
1987 euro 560SEL 300hp 822 engine option
magicbigdaddy is offline  
Sponsored Links
Advertisement
 
post #14 of 17 (permalink) Old 08-13-2019, 10:14 PM
Outstanding Contributor
 
luckymike's Avatar
 
Date registered: Mar 2010
Vehicle: 1989 560SEC, 1989 560SEL, 1995 E420
Location: NorCal
Posts: 3,900
Mentioned: 9 Post(s)
Quoted: 581 Post(s)
I just bought a set from fcp per tuttebenne's suggestion. Sure hoping they'll help my '95 E420. Stay tuned.
luckymike is online now  
post #15 of 17 (permalink) Old Yesterday, 03:11 AM Thread Starter
BenzWorld Member
 
Date registered: Jul 2012
Vehicle: 2014 E350 4Matic Coupe
Location: Mountains of East Tennessee
Posts: 55
Mentioned: 0 Post(s)
Quoted: 3 Post(s)
(Thread Starter)
Quote:
Originally Posted by luckymike View Post
I just bought a set from fcp per tuttebenne's suggestion. Sure hoping they'll help my '95 E420. Stay tuned.
So you are having the same problem
With yours???
Dillinger is offline  
post #16 of 17 (permalink) Old Yesterday, 10:01 PM
Outstanding Contributor
 
luckymike's Avatar
 
Date registered: Mar 2010
Vehicle: 1989 560SEC, 1989 560SEL, 1995 E420
Location: NorCal
Posts: 3,900
Mentioned: 9 Post(s)
Quoted: 581 Post(s)
Quote:
Originally Posted by Dillinger View Post
So you are having the same problem
With yours???
Idle is too high. Car stumbles but is driveable. Sometimes it runs fine. Fairly new caps/rotors, rewired ETA. But as far as I know the insulators are original at almost 200,000 miles.

Codes don't seem to be too helpful. What could a neutral safety switch code have to do with poor running?
luckymike is online now  
post #17 of 17 (permalink) Old Today, 03:25 AM
BenzWorld Elite
 
sbaert's Avatar
 
Date registered: Jun 2007
Vehicle: '95 E300 DIESEL, '91 600SEL, '92 600SEL
Location: San Diego/USA & Belgium/Europe
Posts: 16,546
Mentioned: 27 Post(s)
Quoted: 1859 Post(s)
High idle is a dead giveaway of a bad throttle body and/or module.

I have zero faith in rewired throttle bodies. They just don't hold up the long run.

And always make sure to install a new gasket whenever R&R'ing the throttle body to avoid a vacuum leak.
tuttebenne likes this.
sbaert is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W124 E,CE,D,TD Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 2 (1 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome