Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-10-2012, 12:18 PM
Registered User
 
Join Date: Jul 2004
Posts: 101
94 400E strange issue after sitting for a while.

I have one for you! If my 400E sits for a couple weeks, it runs great for the first 10 minutes or so, then starts missing, backfiring, stumbling. After you run it this way for a bit and shut it off, let it sit for hours to cool off, it is fine from that point on. Start it the next day and run it, it is fine. Only after sitting for a couple weeks will it do it again. I thought maybe the gas cap wasn't venting right causing it to build up a vacuum in the tank, but that wasn't it. Anyone have any ideas, or experienced this?

__________________
05 SL600 75K
87 MB 560SL 119K
87 MB 300D 180K
83 MB 240D 110K
64 1/2 Mustang
74 Monte Carlo 32K
75 Fiat 124 Spyder
16 Equinox
15 2500HD Silverado

Last edited by mkrazy1; 05-10-2012 at 01:04 PM.
Reply With Quote
  #2  
Old 05-10-2012, 06:59 PM
jollygreen1964
 
Join Date: Mar 2010
Location: Crystal Lake IL
Posts: 5
400e sitting a while

I had the same problem over the last few years with my wifes 400e, did everything , plugs , injector cleaner etc , it was the distributor caps and rotors, pull them off and examine them , probably trashed about $170.00 on ebay , $200 on ******** for both sets
Reply With Quote
  #3  
Old 05-14-2012, 10:24 AM
Registered User
 
Join Date: Jul 2004
Posts: 101
Thanks! I'll check that.
__________________
05 SL600 75K
87 MB 560SL 119K
87 MB 300D 180K
83 MB 240D 110K
64 1/2 Mustang
74 Monte Carlo 32K
75 Fiat 124 Spyder
16 Equinox
15 2500HD Silverado
Reply With Quote
  #4  
Old 05-17-2012, 03:33 PM
Wayfarer's Avatar
Registered User
 
Join Date: Feb 2006
Location: Boise, Idaho
Posts: 112
I second what jollygreen said. It is probably the caps and rotors. Classic symptoms. What I have found is that moisture will make its way up into the caps and corrode them if the car is not driven regularly, especially if you are in a humid climate. Driving the car a lot may clear up the problem, but it's best just to replace them. Cost is pretty high, but if you shop around, you can get the Bosch part (exactly the same as the MB part but without the 3-point star) for a lot less. The good news is that they are very easy to replace. It takes me a very leisurely 2 hours to do both sets. Might as well replace the plugs while you are in there too, since the plugs should be done every 30K miles also.

The caps and rotors are about the only semi-weak spot on these cars. Most frequent cause of driveability problems I've found. I say semi because all that's really needed is to replace the caps and rotors every 30K miles and you are good to go. Slightly higher maintenance and expense than the later coil pack E420's, but not bad at all. These are still awesome motors. Driving the car regularly helps too.
__________________
1972 280SE 4.5
1984 300SD, 250K
1991 300SE, 89K
1992 300D (330K miles when KIA'd by mother-in-law 8/10/09 - still sitting in my barn)
1994 E320, 109K
1995 E420, 60K
Proud Member of the Mercedes Benz Club of America - Idaho Chapter
Reply With Quote
  #5  
Old 05-23-2012, 06:09 PM
Registered User
 
Join Date: Jul 2004
Posts: 101
That makes sense. What is absolutely weird about it though is that after sitting for a couple weeks, it runs fine for the first 10 to 15 minutes, then acts up. What I'm going to do is let it sit for a bit, then pull the caps and see what they look like like. Maybe it does build up corrosion or something. I'll then replace them and see how it does also. I'll update the thread in a couple weeks!
__________________
05 SL600 75K
87 MB 560SL 119K
87 MB 300D 180K
83 MB 240D 110K
64 1/2 Mustang
74 Monte Carlo 32K
75 Fiat 124 Spyder
16 Equinox
15 2500HD Silverado
Reply With Quote
  #6  
Old 08-06-2012, 12:19 PM
Registered User
 
Join Date: Jul 2004
Posts: 101
Just as an update... Replacing the distributor caps and rotors resolved the issue. They did look horrible inside!
__________________
05 SL600 75K
87 MB 560SL 119K
87 MB 300D 180K
83 MB 240D 110K
64 1/2 Mustang
74 Monte Carlo 32K
75 Fiat 124 Spyder
16 Equinox
15 2500HD Silverado
Reply With Quote
  #7  
Old 08-06-2012, 02:52 PM
Wayfarer's Avatar
Registered User
 
Join Date: Feb 2006
Location: Boise, Idaho
Posts: 112
Great! Now just be sure to drive that 400E often and you should be good to go another 30K.
__________________
1972 280SE 4.5
1984 300SD, 250K
1991 300SE, 89K
1992 300D (330K miles when KIA'd by mother-in-law 8/10/09 - still sitting in my barn)
1994 E320, 109K
1995 E420, 60K
Proud Member of the Mercedes Benz Club of America - Idaho Chapter
Reply With Quote
  #8  
Old 08-06-2012, 03:10 PM
Registered User
 
Join Date: May 2009
Posts: 274
Quote:
Originally Posted by Wayfarer View Post
Great! Now just be sure to drive that 400E often and you should be good to go another 30K.
Wow, I'm amazed. I've heard others say 30K replacement intervals for these, even on the 104 engines.

All I can say is that my (104.980) originals did around 200K miles with regular cleaning. Even when I replaced them I noticed no difference until the cheap rotor I bought failed.

Now I'm on MB parts and expecting another 200K!!

Best to all.

RayH
Reply With Quote
  #9  
Old 08-06-2012, 03:13 PM
Wayfarer's Avatar
Registered User
 
Join Date: Feb 2006
Location: Boise, Idaho
Posts: 112
You can stretch them a lot longer than 30K by 1) regular driving, and/or 2) periodic removal and cleaning of the contacts. If you don't do enough of either, the MB recommended 30K replacement interval works wonders.
__________________
1972 280SE 4.5
1984 300SD, 250K
1991 300SE, 89K
1992 300D (330K miles when KIA'd by mother-in-law 8/10/09 - still sitting in my barn)
1994 E320, 109K
1995 E420, 60K
Proud Member of the Mercedes Benz Club of America - Idaho Chapter
Reply With Quote
  #10  
Old 05-05-2013, 01:16 PM
88260e's Avatar
Registered User
 
Join Date: Sep 2009
Location: Boston Ma.
Posts: 405
My car is doing the exact same thing lately even sent out the throttle body for rebuilding, and they said it was fine!!! I've had it towed 3 times, ordered caps and rotors today!!!

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 10:13 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page