tach options....what to do :( - SaabCentral Forums
*
Home Saab Pictures Saab Classifieds Saab Dealer Listings Saab Forum Saab Forum


Go Back   SaabCentral Forums > Saab C900, 1979-1993 & '94 Convertible (C=classic) > C900 Performance, Mods & Tuning

C900 Performance, Mods & Tuning Covers Tuning & Performance modifications for the Classic 900 (C900)

SaabCentral.com is the premier Saab Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 15th April 2006
1oldsaabman 1oldsaabman is offline
Saab Crazy
 
Join Date: Nov 2004                                                
Location: Ohio
Posts: 772
Default tach options....what to do :(

Here's my situation, my 88 SPG has a autronic ecu with a MSD DIS-2 direct ignition. Unfortunantly the MSD is to powerfull for my saab tach thus above 4K or so it freaks out & goes dead. So I need to add something else to the car & I have no clue what to do or where to put the $#%ing thing. Any suggestions/pics?
__________________
1988 SPG

2000 Viggen

1999 YZ 400F

2006 Harley Ultra Classic
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 15th April 2006
speedysaab speedysaab is offline
Active Member
 
Join Date: Sep 2003                                                
Location: uk
My Saabs: Saab 900 t16 2Dr, Saab 900 Ruby,
Posts: 123
Default

which autronic are you using?

on the sm4 theres a tacho output that you can plug upto where the ignition amplifier used to be - have you tried this?
otherwise id leave a post to rayhall on the autronic forum
Reply With Quote Quick reply to this message
  #3  
Old 15th April 2006
1oldsaabman 1oldsaabman is offline
Saab Crazy
 
Join Date: Nov 2004                                                
Location: Ohio
Posts: 772
Default

I have the older SMC Still a great ECU just not as great

That's a good idea to throw Ray Hall a question, totally forgot about that & I purchased it from him
__________________
1988 SPG

2000 Viggen

1999 YZ 400F

2006 Harley Ultra Classic
Reply With Quote Quick reply to this message
  #4  
Old 15th April 2006
900t's Avatar
900t 900t is offline
Saabista
 
Join Date: Dec 2002                                                
Location: Montreal, Canada
My Saabs: 1989 900t, 1990 900t, 1990 900 S, 87 SPG
Posts: 18,335
Default

Quote:
Originally Posted by 1oldsaabman
Here's my situation, my 88 SPG has a autronic ecu with a MSD DIS-2 direct ignition. Unfortunantly the MSD is to powerfull for my saab tach thus above 4K or so it freaks out & goes dead. So I need to add something else to the car & I have no clue what to do or where to put the $#%ing thing. Any suggestions/pics?
Put a resistor in the line or something.
__________________
Turbo allows the valiant who has appeared at the wheel SAAB to gain momentum for 200 km/h Charm SAAB Turbo also that it to you not bad Porsche on it it is possible with speed of pregnant turtle feeling itself in full comfort which by the way our hero obeys a rudder reliably and confidently the truth management hardly will twirl a steering wheel by one finger uneasy. Without the hydraulic booster quickly enough perishes a steering shaft, but to change its hemorrhoids from the most fierce
Reply With Quote Quick reply to this message
  #5  
Old 15th April 2006
1oldsaabman 1oldsaabman is offline
Saab Crazy
 
Join Date: Nov 2004                                                
Location: Ohio
Posts: 772
Default

we tried a handfull of different resistors with no luck

then tried the MSD parts which caused the ECU to not work at all

I just talked with someone who deals in autronic ECU's & he stated there is a autronic resistor that might work, I didn't know there was such a thing. So he's going to try to find it & stated that this should do the trick.

fingers, arms & legs are crossed
__________________
1988 SPG

2000 Viggen

1999 YZ 400F

2006 Harley Ultra Classic
Reply With Quote Quick reply to this message
  #6  
Old 16th April 2006
Boosted Shoe Boosted Shoe is offline
Active Member
 
Join Date: Apr 2006                                                
Location: Pewaukee
My Saabs: 95 900 SE
Posts: 65
Default

Aside from that you could just put in one of those big 5 inch tachs. Some places also sell small 2 1/16" tachs. I'd be interested in knowing if that resistor actually works. Keep us posted.
__________________
R.I.P. Boosted shoe. (might yet keep the body)

Under construction 95 900 SE black on black.
Reply With Quote Quick reply to this message
  #7  
Old 17th April 2006
ejenner's Avatar
ejenner ejenner is offline
Banned
 
Join Date: Nov 2003                                                
Location: www.saabsforum.com
My Saabs: 900 Carlsson, 99t, 99 T16, 900 t16 vert
Posts: 7,270
Default

Normally the tach is driven by the ignition module. Pin 7 IIRC? Couldn't you find a way to re-connect the ignition module so it drives your tach? Maybe you could feed the signal from your autronic through the ignition module? Into Pin 1 maybe?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the SaabCentral Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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

Forum Jump


All times are GMT -4. The time now is 07:46 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

top of page | sitemap | email us



copyright © 2003 - 2011 saabcentral.com, All rights reserved http://www.whiter.co.uk - valid xhtml - valid css
SaabCentral is an independently run website and is not affiliated in any way to Saab Automobile AB.


Garage Plus vBulletin Plugins by Drive Thru Online, Inc.