Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Having weird tach problem.

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Old Mar 25, 2008 | 08:11 AM
  #1  
chrisblazzer89's Avatar
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Joined: Feb 2008
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From: Brockton MA
Car: 1986 Camaro
Engine: 350 v8
Transmission: 700r4
Axle/Gears: 10 bolt,disks, 3.23 posi rear
Having weird tach problem.

Ok Tach problem.

Ok so my tach is acting weird. While in neutral she says she at like 3500 rpm I know for a fact its no where near that. Also when I shut her off the tach slowly rises like its gonna tach out so I have to turn the key back to the on postion and then it goes back to zero. what could be causing this?

Should I just go buy a new aux tach and disconnect the stock one??
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Old Mar 26, 2008 | 12:29 AM
  #2  
titan's Avatar
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Joined: Aug 2007
Posts: 260
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From: Georgia
Car: 1990 Camaro RS
Engine: L03 305 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: Having weird tach problem.

https://www.thirdgen.org/forums/elec...meter-fix.html

The tach in your car is a little different than the ones talked about in that thread. Mainly being that there is no chip to be removed, it's simply located on the back of the tach itself. Picture attached, had one sitting on the desk waiting to be done...
Attached Thumbnails Having weird tach problem.-100_0030.jpg  
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