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NG900 & OG9-3 Workshop NG900 (1994 to 1998) & OG9-3 (1999-2002) & '03 Convertible Technical Forum

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  #1  
Old 25th May 2012
tiggerz tiggerz is offline
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Default tach gauge

Wondering where the electrical connection is on the tach. Its not working and I have checked all fuses and connections besides going into the tach itself. Instead of taking the dash apart, I took the fuse panel off and have just enough room to stick my arm up and feel around the back of the tach. Cant find any connection.
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Old 25th May 2012
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earthworm earthworm is offline
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As best I remember, the lead(s) run in a harness from the ECU..I suspect cracked soldered connections at the cluster...
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  #3  
Old 26th May 2012
Saab.XG Saab.XG is offline
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Quote:
Originally Posted by tiggerz View Post
Wondering where the electrical connection is on the tach. Its not working and I have checked all fuses and connections besides going into the tach itself. Instead of taking the dash apart, I took the fuse panel off and have just enough room to stick my arm up and feel around the back of the tach. Cant find any connection.
Check my posts - '97 had the same problem - there are for pin connections from the tacho gauge to the printed circuit board. Martin (new Zealand)
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Old 26th May 2012
BobSaabit BobSaabit is offline
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Connection is through one large connector to the back of the cluster. There's no separate connector for the tach.
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Old 26th May 2012
Saab.XG Saab.XG is offline
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I'm talking about within the cluster - 4 Connections from the tacho to the printed circuit board - Read my posts on the subject. I'm certain tiggerz problem is like the one I had - Martin
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Old 26th May 2012
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'97 Saab SE Turbo '97 Saab SE Turbo is offline
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According to the schematic that I have, the tachometer signal is on pin 6 (of the 56 pin connector); the green/red lead... Ron
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Old 26th May 2012
BobSaabit BobSaabit is offline
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Quote:
Originally Posted by Saab.XG View Post
I'm talking about within the cluster - 4 Connections from the tacho to the printed circuit board - Read my posts on the subject. I'm certain tiggerz problem is like the one I had - Martin
How are you going to fix that without pulling the cluster?
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Old 27th May 2012
Saab.XG Saab.XG is offline
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Originally Posted by BobSaabit View Post
How are you going to fix that without pulling the cluster?
I did take out the cluster and opened it up to expose the dry cracked solder joint - It is going ever since with no problems

Try this link http://www.saabcentral.com/forums/sh...d.php?t=135509

If you repair your own cluster then you retain your mileage reading

Cheers - Martin

Last edited by Saab.XG; 27th May 2012 at 05:32 AM.
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Old 27th May 2012
BobSaabit BobSaabit is offline
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Originally Posted by Saab.XG View Post
I did take out the cluster and opened it up to expose the dry cracked solder joint - It is going ever since with no problems

Yeah, sorry, mixed up the two tracks in this thread. I thought it was the OP trying to do a repair through the fusebox "portal".
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  #10  
Old 1st June 2012
tiggerz tiggerz is offline
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So I just drove to Denver (Im from colorado springs) and about half way there the tach and boost gauge both started working. Then when leaving they didnt work again. So Im guessing it is what you guys are talking about. Thats what Im going to get into this weekend. Ill post back to update on how it goes. Thanks for the info
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  #11  
Old 1st June 2012
Saab.XG Saab.XG is offline
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Quote:
Originally Posted by tiggerz View Post
So I just drove to Denver (Im from colorado springs) and about half way there the tach and boost gauge both started working. Then when leaving they didnt work again. So Im guessing it is what you guys are talking about. Thats what Im going to get into this weekend. Ill post back to update on how it goes. Thanks for the info
If you give a good slap on to of the dash above the cluster you maybe able to get it to come on or off. When you take out the cluster which is bit of a pain - remember to disconnect the negative battery cable. Good luck - Martin
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