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speedo doesnt work

Old Nov 23, 2010 | 04:21 PM
  #1  
evilemokid94's Avatar
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From: Elwood, IN
Car: 1986 camaro Sports Coupe
Engine: L31 350
Transmission: 89 700R4
Axle/Gears: 3.42 gov lock
speedo doesnt work

i need help on this, my speedo doesnt work but the rest of my gauges work, can anyone tell me why thats the only one not working?
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Old Nov 23, 2010 | 08:45 PM
  #2  
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From: Memphis, TN
Car: 1992 z28 Purple Haze
Engine: 5.7L Tuned Port Injection
Transmission: 700R4
Axle/Gears: 3.23 both spinning
Re: speedo doesnt work

Most likely it is a broken or disconnected speedo cable. Put it on jack stands and check the connection at the tranny. Then follow the cable up to the next connection, which will be your cruise control if so equipped, then from there through the firewall to the back of the speedometer. That being said, had an 82 once that the cable broke in the cruise control connection. Went to Autozone and got a new one and was back in operation in a few minutes.
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Old Nov 23, 2010 | 08:50 PM
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From: Elwood, IN
Car: 1986 camaro Sports Coupe
Engine: L31 350
Transmission: 89 700R4
Axle/Gears: 3.42 gov lock
Re: speedo doesnt work

the crusie is aftermarket, and i just replaced the gauges, i just sat the gauges in there, do i have to physically pull the speedo braket out and connect it to the gauge?
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Old Nov 23, 2010 | 09:09 PM
  #4  
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From: Memphis, TN
Car: 1992 z28 Purple Haze
Engine: 5.7L Tuned Port Injection
Transmission: 700R4
Axle/Gears: 3.23 both spinning
Re: speedo doesnt work

Is it an after market speedo? or just another set of factory gauges? If I am understanding you correctly, you will need to remove the cable from the original speedo and connect it to the new one.
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Old Nov 23, 2010 | 09:16 PM
  #5  
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From: Elwood, IN
Car: 1986 camaro Sports Coupe
Engine: L31 350
Transmission: 89 700R4
Axle/Gears: 3.42 gov lock
Re: speedo doesnt work

Originally Posted by jtsk
Is it an after market speedo? or just another set of factory gauges? If I am understanding you correctly, you will need to remove the cable from the original speedo and connect it to the new one.
when i bought the car it had no gauges what so ever, so i bought another set of gauges out of an 86 2.8 camaro off of here, like i said everything else works but the speedo, just slide of gauges in there, i didnt connect anything to the back
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Old Nov 23, 2010 | 09:20 PM
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From: Memphis, TN
Car: 1992 z28 Purple Haze
Engine: 5.7L Tuned Port Injection
Transmission: 700R4
Axle/Gears: 3.23 both spinning
Re: speedo doesnt work

yeah, all you need to do is connect the speedo cable into the back of the speedometer. If you pull those gauges back out, you should see the speedometer cable back up inside the dash assuming the previous owner didn't remove it completely.
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Old Nov 23, 2010 | 09:22 PM
  #7  
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From: Elwood, IN
Car: 1986 camaro Sports Coupe
Engine: L31 350
Transmission: 89 700R4
Axle/Gears: 3.42 gov lock
Re: speedo doesnt work

i saw a plug in, like i round hole back there but thought that the plug on the back of the gauges would just slid in and work like the rest of the gauges.
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Old Nov 23, 2010 | 09:25 PM
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From: Memphis, TN
Car: 1992 z28 Purple Haze
Engine: 5.7L Tuned Port Injection
Transmission: 700R4
Axle/Gears: 3.23 both spinning
Re: speedo doesnt work

The speedometer is mechanical and the other gauges are electric so they work when plugged in. If you connected the speedometer cable completely and it still wont work, then you have a broken cable somewhere along the line.
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Old Nov 23, 2010 | 09:31 PM
  #9  
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From: Elwood, IN
Car: 1986 camaro Sports Coupe
Engine: L31 350
Transmission: 89 700R4
Axle/Gears: 3.42 gov lock
Re: speedo doesnt work

ok thank you!!
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Old Nov 24, 2010 | 07:31 AM
  #10  
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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: speedo doesnt work

It's doubtful that the odometer works (but not impossible). Here's the fix, if it doesn't:

https://www.thirdgen.org/forums/faq-...-fix-pics.html

I'd also pull the cable from the housing and clean and relube it:

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

JamesC
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Old Nov 24, 2010 | 05:19 PM
  #11  
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From: Elwood, IN
Car: 1986 camaro Sports Coupe
Engine: L31 350
Transmission: 89 700R4
Axle/Gears: 3.42 gov lock
Re: speedo doesnt work

Originally Posted by JamesC
It's doubtful that the odometer works (but not impossible). Here's the fix, if it doesn't:

https://www.thirdgen.org/forums/faq-...-fix-pics.html

I'd also pull the cable from the housing and clean and relube it:

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

JamesC
i cant get the speedo cable to connect! i cant get my hand around to push it onto the *** thing!! any tips?
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Old Nov 24, 2010 | 06:26 PM
  #12  
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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: speedo doesnt work

With the cluster in place, remove the lower kick panel, access the cable from below and push/snap it into place.

JamesC
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Old Feb 1, 2011 | 03:56 PM
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From: Mesquite, Texas
Car: 89 rs, 86 Trans Am
Engine: RS-V6... Trans Am-LG4
Transmission: RS-T5... Trans Am 700r4
Re: speedo doesnt work

I just had to do this to my car, and the way I found worked the best was to grip the cable way back at the firewall, push it back toward the cluster, visually line up the end of the cable with the speedometer post, and then push on the front of the cluster until it snaps into place
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Old Feb 8, 2011 | 09:40 AM
  #14  
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From: charlestown, indiana
Car: 1992 camaro rs 25th anniversary
Engine: 305 TBI
Transmission: 700r4
Re: speedo doesnt work

i have a similar problem my speedo jumps from time to time but never accurately works
help?
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Old Feb 8, 2011 | 10:00 AM
  #15  
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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: speedo doesnt work

Originally Posted by speedking1995
i have a similar problem my speedo jumps from time to time but never accurately works help?
Your 92 speedo is electric, so it has no cable. Could be the VSS, located on the trans tail shaft or any number of other issues. A search might turn up helpful info.

JamesC
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Old Feb 8, 2011 | 10:25 AM
  #16  
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From: charlestown, indiana
Car: 1992 camaro rs 25th anniversary
Engine: 305 TBI
Transmission: 700r4
Re: speedo doesnt work

ok i'll see what i can find out thanks
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Old Feb 8, 2011 | 04:45 PM
  #17  
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: speedo doesnt work

Originally Posted by speedking1995
ok i'll see what i can find out thanks
https://www.thirdgen.org/forums/post...025-post1.html
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