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

LinkBack Thread Tools Display Modes
Old 07-21-2001, 08:59 AM
Posts: n/a
BenzMac.or M.B. Doc,..or anybody else with some insight

Heres something to 420sel benz runs great for about 20min, then the idle goes rough on me and it spits and sputters down the road. Cap = O.K. Rotor = O.K. Wires = Just replaced. Area has High Humidity, but also wonder if the wires may be bad already. Idle control relay??, but why would that affect engine while on highway? Maybe water in gas due to high humidity??' but would that take 20 min to kick in?

Also does what is the timing specs for the 420sel and is it with or without vacume attached to distributor.

Reply With Quote
Old 07-21-2001, 01:12 PM
MB Medic
Posts: n/a
I would be looking at lack of voltage from coil and/or lack of fuel due to weak pump when hot, possibly a crankshaft position sensor that flakes out when hot? Just my thoughts.

As for timming specs, the ignition control unit takes care of that (12 degrees BTDC ?) and there should not be a vacuum line to the distributor.

[Edited by MB Medic on 07-21-2001 at 01:16 PM]

Reply With Quote


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
380SL Idle Problem Kevin_300CE Tech Help 4 08-02-2007 05:50 PM
Possible HUGE issue: MB dealers issuing potential problem spark plugs, rough idle ericgr Mercedes-Benz SL Discussion Forum 1 09-24-2004 07:33 PM
91 300SEL - Idle drops when A/C is on Mike Murrell Tech Help 2 09-05-2003 08:27 AM
Sudden Idle problems...and panic. jkazzoun Tech Help 21 05-14-2002 02:20 PM

All times are GMT -4. The time now is 04:03 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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