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

LinkBack Thread Tools Display Modes
Old 04-26-2001, 02:00 AM
Jason M.
Posts: n/a
Hi Everyone,

I have a book on Bosch Fuel injection, and in the section on CIS it lists procedure (generic) for adjusting air fuel mixture on K-jet systems. It says to take a dwell meter or multimeter and connect it to the lambda control unit and measure the duty cycle of the frequency valve. 1st with the oxygen sensor unplugged(to determine 50%) and then with the oxygen sensor plugged back in. I understand this part, but even with Alldata, I am unsure where to plug the multimeter in or where exactly the lambda control unit on an 86 300E is. If someone could tell me, I would be quite appreciative.
Thanks Again

Jason M.
Reply With Quote
Old 04-26-2001, 11:59 PM
Registered User
Join Date: Jul 1999
Location: Youngstown, OH
Posts: 150
You should have 3 wires going to the O2 sensor; 2 together and one seperate (green I think). The two white? wires are the heater wires. Disconnect the single wire and, with a digital voltmeter, connect from the O2 sensor to ground to get your readins per the manual. 0.5 to 0.85 volts rings a bell for O2 sensor output near a fuel/air ratio around 14.7:1. Think of the O2 sensor as a battery who's fuel is oxygen which is then adjusted at your fuel distributer with a LONG 3mm (I think) allen wrench.

Remember, the O2 readings are invalid until it has reached operating temp (about 3-5 minutes of driving).
Reply With Quote
Old 04-27-2001, 12:42 AM
Jason M.
Posts: n/a

Thanks for the info
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
MOST Beautiful W124 AMG for SALE!!! FA22 Mercedes Cars For Sale 25 07-10-2008 03:19 AM
mixture settings and EHA current simmo300e Tech Help 11 08-21-2007 09:41 PM
FS: MANY W124 Parts & more! Detailed PICTURES! GREAT Items! GREAT Deals! CHECK IT OUT FA22 Mercedes Used Parts For Sale & Wanted 22 09-09-2004 07:22 PM
W124 3.0 E Gas Air Mixture Adjustment MichaelW124 Tech Help 7 02-16-2004 01:32 AM
MBTex?? Leather??? YUDDY Detailing and Interior 28 04-08-2002 06:10 PM

All times are GMT -4. The time now is 10:43 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, 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