Replaced neutral saftey switch NSS but starting now erratic - Mercedes-Benz Forum

Go Back   Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W124 E,CE,D,TD Class
New User? Register - Forgot Password

BenzWorld.org is the premier Mercedes-Benz Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 09-24-2009, 10:24 AM   #1 (permalink)
BenzWorld Member
 
sdoherty's Avatar
 
Date registered: Jul 2007
Vehicle: 06 S500 / 03 Expedition / 92 Jeep Wrangler
Location: Northern VA
Posts: 145
Replaced neutral saftey switch NSS but starting now erratic

My E320 sedan was having troubles starting so I would have to start in it neutral. Then it dies completely and would not start.

I put in a new switch and followed the procedures on this site - alignment tool in the proper place - replaced shifter bushings and all that. Then it started right up no problem and tested neutral start - all good. Drove it today to work and at lunch it would not start... I kept trying it and on like the 50th try it finally did. So I took it home and there it sits.

What else does the car need to start?

To test the switch I turned the ignition to the 'start' position (and held it there) and then moved the lever out of P all the way past N down to 2. Now if it were an alignment problem at some point moving it past neutral it would have started correct?

So what else could it be? OVP? bad wire leaving the NSS - bad NSS?

tnks al for your help..
__________________
95 E320 Sedan - green/tan 140k
94 E320 Wagon - blk/blk md tex 80k crashed
94 E500 - silver/blk 120k sold
sdoherty is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 09-25-2009, 05:23 AM   #2 (permalink)
BenzWorld Elite
 
Sergio's Avatar
 
Date registered: Sep 2002
Vehicle: 2001 E320; 2002 ML500
Location: Philadelphia Suburb
Posts: 1,969
Define "it won't start". Does the starter crank or is it completely dead?
If dead, you can jumper the starter (3 pin connector close to the brake master cylinder close to the firewall; middle or purple wire, to the +12V battery terminal) and see if the starter cranks. I've done this on my car so many times that now I permanently wired a remote switch to said pin so that if the NSS fails again, I can jumpstart it quickly. You need to put the key in the starting position or the car won't start regardless of the jumper.
__________________
Sergio
'02 ML500
'01 E320 Wagon 4-Matic
'95 E320 SE (gone)
'99 ML430 (gone)
'94 C280 (R.I.P)
Sergio is offline   Reply With Quote
Old 09-29-2009, 07:32 AM   #3 (permalink)
BenzWorld Member
 
sdoherty's Avatar
 
Date registered: Jul 2007
Vehicle: 06 S500 / 03 Expedition / 92 Jeep Wrangler
Location: Northern VA
Posts: 145
Thanks Sergio - sure enough that purple wire does indeed start the car! I might just put a doorbell switch somewhere to start the car - I am tired of fighting this damn NSS thing...
sdoherty is offline   Reply With Quote
Old 09-29-2009, 11:57 AM   #4 (permalink)
BenzWorld Extremist
 
zviratko's Avatar
 
Date registered: Jan 2007
Vehicle: W124 400E, W126 500SE
Location: Prague
Posts: 968
Send a message via ICQ to zviratko Send a message via Skype™ to zviratko
are you sure the problem is not in the ignition tumbler (cylinder)? My w210 did the same...
zviratko is offline   Reply With Quote
Old 09-30-2009, 06:45 AM   #5 (permalink)
BenzWorld Elite
 
Sergio's Avatar
 
Date registered: Sep 2002
Vehicle: 2001 E320; 2002 ML500
Location: Philadelphia Suburb
Posts: 1,969
Quote:
Originally Posted by zviratko View Post
are you sure the problem is not in the ignition tumbler (cylinder)? My w210 did the same...
In my case it was the NSS. After replacing it for the second time, it now starts normally without the need for the tricked out switch.
Sergio is offline   Reply With Quote
Old 06-23-2010, 02:47 PM   #6 (permalink)
BenzWorld Junior Member
 
Date registered: Jul 2006
Vehicle: 2001 C240, 1995 E320
Location: Leawood, KS
Posts: 6
E320 Starting probs. NSS repl procedure? Dignostics?

How did you find the NSS replacement procedure on this site? "NSS Replacement Procedure" and "1995 E320 neutral safety switch replacement procedure" result in no matches. Also, do you know if there is any starter information in the service manuals? I have the CD-ROM set for the 95 E320 and the paper manual set for a 1986 300E (engine, chassis (2 vols), climate control). Neither has anything on the starter. I'm hoping for some diagnostic information but so far no go. Thanks Ken
Ken8911 is offline   Reply With Quote
Old 06-23-2010, 03:25 PM   #7 (permalink)
BenzWorld Member
 
Date registered: Dec 2007
Vehicle: 94 E320 Wagon--218K miles, 1995 E320 Sedan--101K miles, 1994 E500 Sedan--78K miles
Location: St. Louis, Missouri
Posts: 194
Did you replace the NSS with a MB OE part or did you use the much cheaper FEBI brand switch?

The FEBI switch has a high failure rate right out of the box.......

J. M. van Swaay
J. M. van Swaay is offline   Reply With Quote
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W124 E,CE,D,TD Class

Bookmarks



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Topic Author Forum Replies Last Post
Just replaced the Neutral Safety Switch black-55 W124 E,CE,D,TD Class 10 02-12-2012 04:49 PM
Neutral Safety Switch/Backup Light Switch SC Surfer W123 E,CE,D,CD,TD,TE Class 13 01-18-2008 01:45 PM
neutral safety switch NüR-SPEC W126 S,SE,SEC,SEL,SD,SDL Class 5 04-23-2007 08:01 PM
Starting on Park or Neutral Uli73 W126 S,SE,SEC,SEL,SD,SDL Class 1 02-28-2007 04:47 PM
safety/neutral switch userpaul5237 W116 S, SE, SEL, SD Class 1 08-14-2006 08:28 PM


All times are GMT -7. The time now is 11:13 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.1

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.