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Speedometer firebird 1987

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Old Apr 30, 2010 | 01:44 PM
  #1  
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Car: Pontiac Firebird 1987
Engine: 305 4bbl
Speedometer firebird 1987

New problem here.

Yesterday i was driving my bird around and no problem so far but i stopped at a gas station and when i started her up again my speedometer dont work no more.

What could be the problem?
searched on the forum but couldnt find anything.

Ive checked all fuses but their fine.
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Old Apr 30, 2010 | 01:49 PM
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Re: Speedometer firebird 1987

All the gauges are on one fuse. If that fuse went, you'd know it. As for the gauge itself it could be the sending unit. It could be a short or a broken electrical wire, a broken speedometer gear. (Technically possible I suppose, but unlikely.) It could also be a problem with the cluster, etc.
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Old Apr 30, 2010 | 02:01 PM
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Car: Pontiac Firebird 1987
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Re: Speedometer firebird 1987

Aha ok

Will take a closer look tomorrow. check some wires behind the dash tomorrow.
When i hit a roadbump the speedometer jumps up to. Feels like its a wire problem. Like when i hit a bump it got contact or something.


Excuse my bad english
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Old Apr 30, 2010 | 02:06 PM
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Axle/Gears: 10-bolt, 4.10 gears
Re: Speedometer firebird 1987

Originally Posted by crazyeight
Aha ok

Will take a closer look tomorrow. check some wires behind the dash tomorrow.
When i hit a roadbump the speedometer jumps up to. Feels like its a wire problem. Like when i hit a bump it got contact or something.


Excuse my bad english
There is a connection that comes up from the transmission/speedo gear to the VSS. That's what I'd check first.
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Old Apr 30, 2010 | 02:07 PM
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Car: Pontiac Firebird 1987
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Re: Speedometer firebird 1987

Call me stupid but what is a VSS?
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Old Apr 30, 2010 | 02:13 PM
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Car: 1992 Formula Firebird
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Transmission: World Class T5
Axle/Gears: 10-bolt, 4.10 gears
Re: Speedometer firebird 1987

Vehicle speed sensor.
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Old Apr 30, 2010 | 02:16 PM
  #7  
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Re: Speedometer firebird 1987

Aha hehe now i know
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Old May 2, 2010 | 02:28 AM
  #8  
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Car: Pontiac Firebird 1987
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Re: Speedometer firebird 1987

Little update

Havent had time to check vss yet but i noticed that its not only the speedometer "needle" that doesent work.

Its the whole thing "tripmeter, km meter and speed" so its the whole thing thats dead.


Will check vss under the car today.
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Old May 2, 2010 | 12:42 PM
  #9  
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Car: Pontiac Firebird 1987
Engine: 305 4bbl
Re: Speedometer firebird 1987

Was under the car before but couldnt find any obvious brakes on cables or anything.

Tried to get the dash out but couldnt get it out. Anyone with a guide for that?
The left part of the speedometer wouldnt come out and i didnt want to pull incase i brake anything. so a guide would be helpful.

Took all panels down even the top one "where the speakers are"
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Old May 8, 2010 | 10:29 AM
  #10  
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Car: Pontiac Firebird 1987
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Re: Speedometer firebird 1987

Problem solved

Its my speedometerwire thats dead

Thanx for all help
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Old May 24, 2011 | 08:42 AM
  #11  
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Car: 1986 Camaro Z28
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Transmission: built out 700r4
Axle/Gears: 4th gen, 373, LSD, GIRDLE
Re: Speedometer firebird 1987

old post i know and im sorry, my 1986 has a dead speedometer,and i just replaced the gear,thing still wont work. what is this wire you speak of? and is your speedometer mechanical or electronic? thanks, sorry again about trollin up an old post
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Old May 24, 2011 | 10:39 AM
  #12  
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Re: Speedometer firebird 1987

Originally Posted by 11ellswray
my 1986 has a dead speedometer,and i just replaced the gear,thing still wont work.
Your 86 Camaro is mechanical. Check the following thread for possible fixes:

https://www.thirdgen.org/forums/inte...eedo-woes.html

JamesC
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Old May 24, 2011 | 11:43 AM
  #13  
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From: Wisconsin near the 54757
Car: 1986 Camaro Z28
Engine: 385" SBC
Transmission: built out 700r4
Axle/Gears: 4th gen, 373, LSD, GIRDLE
Re: Speedometer firebird 1987

i replaced the driven gear, the drive gear appears to be in great shape, when i spin the end with my hand the speedometer will get to 15mph, i have already taken the cable out and regreased it.
quite frustrated
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Old May 24, 2011 | 11:57 AM
  #14  
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From: Wisconsin near the 54757
Car: 1986 Camaro Z28
Engine: 385" SBC
Transmission: built out 700r4
Axle/Gears: 4th gen, 373, LSD, GIRDLE
Re: Speedometer firebird 1987

i think that my gear might not be seating correctly into the tailshaft, just a guess though. so i put the gear in 7 different times, each time thinking that i had solved all of my problems and that life was great, untill i go to test it and the speedo doesnt even bounce.
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