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 02-28-2002, 03:17 PM
pvid
Guest
 
Posts: n/a
Angry 230.4 Can Anyone Repair This Car?

I have a 1975 230.4 with the 175 CDT stromberg. I cannot get this car to run within factory specs with all vacuum lines properly installed.

I have had 2 shops work on the car and the last guy hooked up the vacuum directly to the the distributor, diconnected everything else vacuum related and had it pass smog for me.

I have changed out the ignition to a MSD electronic ignition which has helped the secondary perfomance. However the (Factory) RPM relay box seems bad because I cannnot get the advance to switch on when the vacuum advance is run through the switchover valve.

Did I remove something that told the RPM relay box the RPM when I removed the stock control box? This car has been a complete headache.

The only thing I have not changed out is the RPM relay box and the relay box.
I hesitate as I do not know if they will work without the stock ignition box.

ANY ADVISE BEFORE I SCRAP THIS HEADACHE?

By the way I have found and repaired several vacuum leaks all resulting in resetting everything and the same end result. I have also installed all new vacuum switchover valves.

Reply With Quote
  #2  
Old 03-01-2002, 12:29 PM
pvid
Guest
 
Posts: n/a
Wink 0-59 Well thanks anyway I fixed the problem.

To all 230.4 owners. If you convert to electronic iginition disconnect the old igintion box under the battery tray.

remove all wires hook up the new ignition per manual. Then coming out the RPM relay box (closest to the fire wall in drivers side) The manual shows a Green wire marked C. It shows it going to Double Cable connector term7 ZV??? (RPM FEED????)

Who cares. Just remove the cable to the box and take off the cover on the back of the cable plug exposing the wires. Solder a wire to the green wire. Take the other end to a RPM feed source, my MSD ignition has a RPM out I plug into there. Voala! My RPM switches to all Vauum switches operated by the RPM switch relay box now operates.
Vacuum advance is hooked up properly and the car runs as designed.

If you change this cars ignition and do not get a RPM signal to that switch the car will never run properly. You need the 2000 RPM switch to activate advance at 2000 RPM or you will have to move out of the way of people on wheelchairs or advance your timing so far the car will run like crap. Or as the mechanic who did not know what he was doing on my car hooked advance directly to distributor causing the car to run like crap!


Good Luck

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
Took our'67 to first car show 68_Mercedes Vintage Mercedes Forum 16 11-23-2004 04:01 PM
Car Repair Manual For C230 '97 ikpa Tech Help 2 10-27-2003 08:43 PM
nice 1969 300SEL 6.3 for sale, Portland OR gerryvz Mercedes-Benz Cars For Sale 0 06-23-2003 06:09 AM
Are these repairs normal or excessive? DuckMuck Tech Help 37 04-15-2003 11:51 PM
New car owners embarassed by vintage cars? 300SDog Vintage Mercedes Forum 23 02-11-2003 10:47 PM



All times are GMT -4. The time now is 05:42 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, 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