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

90-92 tachs

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Old Oct 23, 2005 | 01:46 PM
  #1  
LoudmouthSS's Avatar
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From: West Palm Beach, FL
Car: 1991 Z28
Engine: SBC
Transmission: 700R4
Axle/Gears: 2.73
90-92 tachs

Ok so i ripped apart my dash and took out the gauge cluster. I took it apart and pulled the tach out. What is on the back of our tachs...kinda looks like a small motor..can you replace these? My tach no longer moves with the revs of the motor and its the only thing i can think of left that is wrong with it.

If anyone needs a picture ill post one up..
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Old Oct 24, 2005 | 07:26 PM
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Firebat's Avatar
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you have to get a whole new gauge if you want to replace it. or find one on ebay or salvage yards. You can swap the faces of the gauges. Does your tach work at all or is it completely dead?

You can also post in the parts wanted classifieds message boards to see if anyone wants to sell you one.
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Old Oct 25, 2005 | 11:11 PM
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LoudmouthSS's Avatar
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From: West Palm Beach, FL
Car: 1991 Z28
Engine: SBC
Transmission: 700R4
Axle/Gears: 2.73
well no the tach does work.. it powers up with the car but it wont move with the revs of the car....when i was putting the gauges back it went alittle ballistic for a second and then stopped...
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Old Oct 26, 2005 | 02:43 AM
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i_luv_honda!'s Avatar
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From: Washington
Car: 1983 camaro z28
Engine: 305
Transmission: just got fixed~
good thing i saw this post, mine did the exact same thing, i was wondering if u know exactly where the tach hooks up and if theres a fuse etc i could possibly change on mine, anyways if u find anythign out lemme know thanks - chris
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Old Oct 26, 2005 | 06:17 PM
  #5  
LoudmouthSS's Avatar
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From: West Palm Beach, FL
Car: 1991 Z28
Engine: SBC
Transmission: 700R4
Axle/Gears: 2.73
all the gauges use an electric "graph" on the back of the gauge assembly. then theres 2 plugs from the wiring harness that are clipped into the dash the the "graph" just lays on them...they dont actually plug in.

I believe there is a gauge fuse though under the dashboard...right under the steering column. I checked mine and its fine so

good luck
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