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 > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 02-04-2012, 01:07 AM
Registered User
 
Join Date: Jan 2012
Posts: 450
Differences in Tachs for W123 between 82-84?

Hi guys,

I'm trying to replicate Funola's DIY tach on my 1983 240D with Manual tranny.

DIY tach for 240D w EGR- easy!

I am assuming my 83 has EGR (gotta check that)

Funola used a tach/clock out of a same model year (83) 300D with automatic.

He was able to very simply swap in the tach and run a signal wire from the EGR controller.

I have found a source for either an 82 or an 84 tach.

However, in testing the tachs, here's what he said:

The calibration appears to be quite different between the two model years.

Results:

1982 5000 rpm at ~80 Hz

1984 4500 rpm at ~10 kHz (seems to have different pickup signal vs. 1982)

I suppose that I should simply pick up an oscilloscope and figure out what signal is coming from the EGR controller, but do you guys happen to know which of the tachs I should get?

Thanks much,

PE
__________________
83 240D - 4 speed manual - Manilla Beige
189K miles, Tachometer mod, cool wooden shift knob from PeachParts, CocoMats, Original factory paint, manual windows, manual sunroof. Starting to add AudioWrap to this car too!
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 02:50 PM.


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