1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Speedometer question?

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Old 05-11-2013, 03:16 PM
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Default Speedometer question?

My 1991 truck has no speedometer, i think this is the second one in the last 5 years, i bougt them on ebay,so anyway I was thinking about using a universal speedometer, is this really possible (???)

To be honest i really want to use the original speedometer/odometer, any help or input will be very much appreciated.

Thanks
 
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Old 05-17-2013, 06:15 PM
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What!!!!!! Lol anyway i end it up buying the speedo gears from the ebag..

Thanks you so much.
 
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Old 05-20-2013, 10:18 AM
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Originally Posted by 1stgenSWB
My 1991 truck has no speedometer, i think this is the second one in the last 5 years, i bougt them on ebay,so anyway I was thinking about using a universal speedometer, is this really possible (???)

To be honest i really want to use the original speedometer/odometer, any help or input will be very much appreciated.

Thanks
OK, I'll bite! Usually on these trucks, the speedo works and the odometer quits. Thats usually the gears inside needs replacing. Now, if the speedo quits working, its probably the VSS terminals loose, or a wire is broken between the VSS and the speedo. I've seen the VSS fall completely off before or vibration unscrewed it and it was just hanging by its wire. But, don't completely rule out the speedo entirely.
A quick solution is a Electronic speedo thru Autometer with a new VSS....when you change your tire size, its sweet cause you can adjust your speedo reading to compensate. I have one in my HotRod 1-Ton....
 
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Old 05-20-2013, 01:00 PM
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Thanks.....so far i allready replace the small 2 gears at the speddo cluster, its still not working, i guess the problem is/was not there!!!! So youre saying you have an Autometer universal speedometer? And you are still using a regular VSS, i understand a few of those Autometer (brand) work with some type of GPS thing??? Righ? What P.N. Is the one your using, in case i dont have good lock with my hunting, this is what im going to do, in my list:

1-Replace the speedo gears... DONE. ( did not solve the problem):
2-Check and/or replace the VVS. Will do this in the next few days..
3-
4-
5-
 
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Old 05-20-2013, 04:31 PM
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The speedo in our trucks is electric, it receives a signal from the Vehicle Speed Sensor. The VSS is screwed into where the speedo cable would be on the early trucks.
Look in the Autometer Catalog, its a universal round 2 1/2 OD Autometer, with the electric VSS. The Dash in my HotRod is flat so I've got A Pryo, Boost, Water Temp, Oil Press, Oil Temp, Fuel Press, Voltage, Tach, Speedo, Trans Temp.

If you've gone into the speedo to do the gears, and all is good there, Check The VSS first. Sometimes the VSS will become loose and loose its ground, and it'll be like a blinking switch....
 
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Old 05-23-2013, 11:48 AM
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1-Replace the speedo gears... DONE. ( did not solve the problem):
2-Check and/or replace the VVS. Will do this in the next few days..(didnt work)
3-
4-
5-

---AutoMerged DoublePost---

Btw.....If you have had speedometer issues and have fixed them, please post your problem, and how you fixed your issue,
 

Last edited by 1stgenSWB; 05-23-2013 at 11:48 AM. Reason: Automerged Doublepost
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