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

speedometer doesnt read correctly ?

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Old 02-05-2010, 11:19 AM
diesel addiction's Avatar
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Default speedometer doesnt read correctly ?

Hi everyone im just getting started on here but i have an account on 1stgen.org. ok heres my senario,Thanks in advance for any help !

When i am driving at highway speed in my 92 dually with 4:10 axle ratios the speedo say im going 45 0r 50 and i know that its reading wrong but the trouble is when the speedometer says it is going 30 (in traffic mostly) it will kick out of overdrive and i have a potintometer from dnr customs and it worked great until my speedometer quit reading correctly i cant stand it kicking out of overdrive when i have to be going on at least 50 or 55 miles per hour.
is it a sensor or a bound a speedo cable?
 
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Old 02-05-2010, 11:37 AM
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...try posting your question here in1st Generation Dodge Cummins 89-93 - Diesel Bombers welcome to db
 
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