speedometer not working on dodge truck

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  #1  
Old 04-29-07, 05:22 PM
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speedometer not working on dodge truck

I have a dodge ram 150, 8 cylinder, auto trans. THe speedometer doesn't work but I don't know if its the meter itself, the doohickey in the tranny, or the wiring in between. Any suggestions?
 
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Old 04-29-07, 07:44 PM
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you can get your computer scanned. If the sending unit is not sending a signal or the wiring is damaged in between, it will read as no output.
 
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Old 04-30-07, 04:51 AM
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Cool speedometer

No speedometer cables anymore? Man, I am living in the past!!!
 
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Old 05-01-07, 11:06 AM
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**you can get your computer scanned. If the sending unit is not sending a signal or the wiring is damaged in between, it will read as no output.**

I went by autozone (Or some similar store) for the free computer screening and was told my truck was too old. I don't think I have a computer in there at all.

Is there any other way I can check? Perhaps remove the unit from the tranny and check it for output?

**No speedometer cables anymore? Man, I am living in the past!!!**

There are still connections, just wires instead now.
 
  #5  
Old 05-01-07, 12:20 PM
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Cool need for speed

You never said how old your truck was...I remember the days of taking a drill and spinning the cable from right off the tranny and see if the speedometer worked...also, there used to be a small adapter coming out the tranny...you could raise the rear wheels and put it in gear and see if it spins the little cable end.
 
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Old 05-01-07, 05:51 PM
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what year is it? if it is OBD rather than OBDII, you can make it self read the trouble codes. If you can count, you cab retrieve the codes.
 
  #7  
Old 05-01-07, 08:45 PM
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oops, my bad. THought I put the year on there.

It's a 92. Ol' duke is the ol feller's name since he looks like something out of "The Dukes of Hazzard" including the vice grips I am using as a inside door handle.
 
  #8  
Old 05-03-07, 09:58 AM
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Well, the windshield wipers went out, but the motor works, and there is a live current to the plastic plug as well. It was also FILTHY inside the plug. I'm putting it back together probably tonight.

I am wondering if the similar plug for the speedometer (The part in the tranny) is also losing connection for the same reason. I'll check hopefully by this weekend and let you know.

BTW is it possible to turn this gizmo to see if it sends signal?
 
  #9  
Old 05-29-07, 07:31 PM
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Speedometer repair.

The odometer quit working on my '90 model truck, but the speed displayed okay.

A coworker knew of a place who could fix it. I'll find the name, if you want.

Don't give up on it yet.
Kelly
 
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