Speedometer firebird 1987
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Junior Member
Joined: Apr 2010
Posts: 33
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From: Sweden
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.
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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From: Texas
Car: 1992 Formula Firebird
Engine: 305CID (LB9)
Transmission: World Class T5
Axle/Gears: 10-bolt, 4.10 gears
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.
Thread Starter
Junior Member
Joined: Apr 2010
Posts: 33
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From: Sweden
Car: Pontiac Firebird 1987
Engine: 305 4bbl
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
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
Supreme Member
iTrader: (1)
Joined: Sep 2002
Posts: 2,565
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From: Texas
Car: 1992 Formula Firebird
Engine: 305CID (LB9)
Transmission: World Class T5
Axle/Gears: 10-bolt, 4.10 gears
Re: Speedometer firebird 1987
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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Thread Starter
Junior Member
Joined: Apr 2010
Posts: 33
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From: Sweden
Car: Pontiac Firebird 1987
Engine: 305 4bbl
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.
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.
Thread Starter
Junior Member
Joined: Apr 2010
Posts: 33
Likes: 0
From: Sweden
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"
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"
Joined: Nov 2008
Posts: 143
Likes: 6
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
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
Joined: Aug 1999
Posts: 19,282
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Speedometer firebird 1987
https://www.thirdgen.org/forums/inte...eedo-woes.html
JamesC
Joined: Nov 2008
Posts: 143
Likes: 6
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
quite frustrated
Joined: Nov 2008
Posts: 143
Likes: 6
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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