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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 01-09-2002, 11:12 PM
Registered User
 
Join Date: Jan 2000
Posts: 126
420 SEL Violent Engine Shake

My engine is shaking at idle and at low speeds. This is what I have noticed:

1) The economy gauge reads half way at idle

2) The oil pressure and tach fluctuate more than normal

3) It smoothes out at highway speeds but still gets horrible fuel economy

4) The car does not stall

5) My tooth fillings are coming out

ANY IDEAS?

Thanks
Reply With Quote
  #2  
Old 01-10-2002, 12:43 AM
Senior Member
 
Join Date: Apr 2001
Location: Beech Island, S.C.
Posts: 468
sounds like a major vacuum leak to me. Check the check valve between the intake manifold and the brake booster. If that's ok check the vacuum line going to the transmission modulator valve.
Reply With Quote
  #3  
Old 01-10-2002, 03:30 AM
Registered User
 
Join Date: Jun 2001
Location: oregon
Posts: 194
my car ('85 380 SE) "rocked" at idle.
I ran a can of "Techron" in a full tank of gas,
then changed the oil and filter.
the rock went away.(cleaned injectors)
It sounds as if you have a more severe problem,
I would pull and examine your spark plugs,
if one is fouled,check spark wires,cap,rotor,replace if necessary,check all vacume lines,look for disconnected lines,rotted lines(if you see this repalce all vacume lines)
this is the basics,after this checks out,its time to get a professional diagnosis.
good luck!
__________________
'60 190b
'77 300D
'78 240D
'82 300TD
Reply With Quote
  #4  
Old 01-10-2002, 10:14 PM
TurboTurbine
Guest
 
Posts: n/a
run some fuel injector cleaner through the system. also check your spark plughs and timing.
Reply With Quote
  #5  
Old 01-10-2002, 10:45 PM
Registered User
 
Join Date: Jan 2000
Posts: 126
Smile

Thanks for the tips everyone.
Reply With Quote
  #6  
Old 01-12-2002, 04:59 PM
Registered User
 
Join Date: Jan 2000
Posts: 126
Talking Problem fixed !

It was just a vacuum leak.

Thanks everyone.
Reply With Quote
  #7  
Old 02-06-2002, 04:06 PM
Registered User
 
Join Date: Dec 2001
Location: LaPorte, IN
Posts: 400
Just curious, can you identify which line or connection it was that caused your vibration? I've just ordered all new fittings and hose from Fast Lane and I'm going to replace it all, but yesterday our engine started behaving as you described. I'm hoping it will clear up some shift issues also.
Earl McLain
"89 560 SEL
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rust Free 82 300SD in Dallas TX needs new home!!! bodyart27 Diesel Discussion 47 08-07-2004 09:54 AM
86 420 sel engine wash, now no AC bmunse Tech Help 2 08-03-2003 10:44 PM
420 Engine revs up by itself then idles Danfaj Tech Help 0 06-27-2003 05:46 PM
420 SEL overheating or? stickball Tech Help 6 06-09-2003 08:35 PM
Engine rock 88 420 SEL atdub Tech Help 1 07-07-1999 10:48 PM



All times are GMT -4. The time now is 04:59 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page