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  #1  
Old 05-16-2011, 10:23 PM
rewillia
 
Join Date: May 2011
Location: Houston, TX - USA
Posts: 13
560SL Tachometer Not Functioning

I have a 1988 560 SL, 137K miles. Black/Palamino Leather

To get started, The tachometer is not working (at all) and I am seeking advice on how to repair it.

First steps/first item to check and how to do it. Is there a sensor or pickup that I need to check...trace, locate? All/any advice will be greatly appreciated.

Other than that, I Just bought the car, always dreamed of having one..love it already and now its time to start getting smart (aware of and addressing issues, learning from forum members, others, etc ) and and getting on with repairing & restoring it.

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  #2  
Old 05-17-2011, 01:06 AM
Registered User
 
Join Date: Oct 2008
Location: Phoenix, AZ
Posts: 349
The tach signal is fed to the meter by an output from the EZL (electronic ignition control unit). This lead goes by the diagnostic port, and then into the cabin to the instrument cluster.

You can access the CD-ROM version of the service manual online here:http://www.startekinfo.com/StarTek/outside/11883/?requestedDocId=11883

It has the wiring diagrams and service procedures, but it takes a little bit of time to get familiar with.

Look for a loose wire, poor connector, or signs of corrosion.

Good hunting
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  #3  
Old 05-17-2011, 06:27 AM
rewillia
 
Join Date: May 2011
Location: Houston, TX - USA
Posts: 13
560SL Tachometer

Thanks for the advice and the link. I'm on to it now.
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  #4  
Old 06-02-2011, 02:30 AM
jammer's Avatar
Registered User
 
Join Date: Jan 2004
Location: Bay Area, Ca
Posts: 71
Have you found out what's causing the tach not to operate? Please post what you found out as the tach in my '89 560SL is not working either. Thanks.

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'89 560SL Rauchsilber
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