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Speedo problems

Old Jul 14, 2008 | 09:41 PM
  #1  
88bird?'s Avatar
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Car: 1988 Pontiac firebird
Engine: built 350
Transmission: 700r4 built up to 600hp
Axle/Gears: stock for now
Speedo problems

I dont know if this is in the right section, but since i had my car it has speedo problems, i was going to buy a new aftermarket one but id figure id try and save this one, well the problem, once i start moving it just goes right to 92mph and stays there until i stop. Whats wrong?
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Old Jul 14, 2008 | 10:11 PM
  #2  
BigBadLou's Avatar
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: Speedo problems

Most likely, the problem is in the speedometer gauge control circuit but there is always a chance that it's something else. Trying to swap in another speedometer gauge would tell you for sure. They can be found at a junkyard for not much cash.

Hope this helps.
Lou
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Old Jul 15, 2008 | 09:39 AM
  #3  
88bird?'s Avatar
Thread Starter
Junior Member
 
Joined: Feb 2008
Posts: 73
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Car: 1988 Pontiac firebird
Engine: built 350
Transmission: 700r4 built up to 600hp
Axle/Gears: stock for now
Re: Speedo problems

Originally Posted by BigBabyLou
Most likely, the problem is in the speedometer gauge control circuit but there is always a chance that it's something else. Trying to swap in another speedometer gauge would tell you for sure. They can be found at a junkyard for not much cash.

Hope this helps.
Lou
How hard is it to swap them? I know the closest junk yard has many many third gens, finding parts isnt a problem.
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