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Old Jun 1, 2003 | 08:31 PM
  #1  
wls's Avatar
wls
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From: Mid-Mich
tach

My 92 f-250 diesel, has a tach that only will work for a couple seconds if and only when I accerate heavy, like I said just for a few seconds it will go to say 3000 and then back down. What does the tach run from, could this be a easy fix? loose wire or something like that? thanks
 
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Old Jun 2, 2003 | 01:01 AM
  #2  
RCrawler's Avatar
RCrawler
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From: Southern Oregon USA
tach

The sensor is on the top of the front cover to the right of the injection pump. It is a magnetic sensor that takes pulses from a toothed ring on the pump drive gear.

Jason
 
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Old Jun 2, 2003 | 08:23 AM
  #3  
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argve
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From: Fort Wayne, IN. USA
tach

You can try to clean the sensor but if this works it seems that most fail again in a short period time, then most guys just replace it and never look back.
 
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Old Jun 2, 2003 | 09:13 PM
  #4  
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wls
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tach

If I can find it, I'll try cleaning it. Thanks
 
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Old Jun 2, 2003 | 11:01 PM
  #5  
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argve
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tach

It's located just behind and slightly to the right of the oil filler cap. It has two wires coming from a "BIG NUT" sits at about a 60 degree angle.
 
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Old Jun 3, 2003 | 06:11 AM
  #6  
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wls
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From: Mid-Mich
tach

Originally posted by argve
It's located just behind and slightly to the right of the oil filler cap. It has two wires coming from a "BIG NUT" sits at about a 60 degree angle.
Thanks should be able to find it, thanks again
 
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