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  #1  
Old 12-28-2005, 06:03 PM
fenderman33 fenderman33 is offline
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Dead Speedo and Odometer...wasn't VSS...Please Help

I have a 93 S10 pickup, 2wd 2.5.
The speedometer and the odometer haven't worked since I got the truck. I put in a new speed sensor today and it didn't fix it. I pulled the gauge cluster and jumped the speedo pin to ground and got a reading, so I know the needle works, I'm just not getting any signal from the sensor. I checked voltage at the sensor and didn't have anything. Checked the wires from it to the fire wall and they looked good. What am I missing? I'd appreciate any help.
Thanks,
Jon
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Old 12-29-2005, 12:21 AM
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Re: Dead Speedo and Odometer...wasn't VSS...Please Help

cable driven speedo?
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Old 12-29-2005, 12:28 AM
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Re: Re: Dead Speedo and Odometer...wasn't VSS...Please Help

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cable driven speedo?
Speed sensor...electronic.
Jon
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Old 12-29-2005, 12:39 AM
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Re: Dead Speedo and Odometer...wasn't VSS...Please Help

the last one i seen, was a clipped wire from poor machanics work, happend to be the 5 v signel wire, have to hunt for it, took us hours in the shop to find it on the hoist
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Old 12-29-2005, 12:42 AM
fenderman33 fenderman33 is offline
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Re: Re: Dead Speedo and Odometer...wasn't VSS...Please Help

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Originally Posted by dmbrisket 51
the last one i seen, was a clipped wire from poor machanics work, happend to be the 5 v signel wire, have to hunt for it, took us hours in the shop to find it on the hoist
Where do the wires for it run from inside the cab? I can see them from the firewall to the sensor, but not under the dash. If I knew where to trace I could trace. Are there any other things it could be?
Thanks,
Jon
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Old 12-29-2005, 12:51 AM
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Re: Dead Speedo and Odometer...wasn't VSS...Please Help

could be lots of things from a pinched wire to a bad ecm/pcm circut, how does the cv ring look? chewed up or nice?
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Old 12-29-2005, 07:23 AM
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Have you taken a look at the DRAC module?
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Old 12-29-2005, 10:08 AM
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Re: Dead Speedo and Odometer...wasn't VSS...Please Help

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Have you taken a look at the DRAC module?
No I haven't...where/what is is?
Jon
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Old 12-29-2005, 10:12 AM
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Re: Dead Speedo and Odometer...wasn't VSS...Please Help

The DRAC module is attached to your ECM under the dash. Essentially it converts the signal from your VSS to work with your speedo
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Old 12-29-2005, 07:15 PM
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Re: Re: Dead Speedo and Odometer...wasn't VSS...Please Help

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Originally Posted by rlith
The DRAC module is attached to your ECM under the dash. Essentially it converts the signal from your VSS to work with your speedo
Is there a way to test it without replacing it?
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Old 12-29-2005, 10:04 PM
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Re: Re: Re: Dead Speedo and Odometer...wasn't VSS...Please Help

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Originally Posted by fenderman33
Is there a way to test it without replacing it?
You can take it apart and meter everything in it based on the coding of the caps, resistors, et-al
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