Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Is my tach sensor the culprit?

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  #16  
Old 06-13-2009, 09:18 PM
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ill have to check my wires tomorrow
 
  #17  
Old 06-14-2009, 02:51 PM
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I have some brush on electrical tape I'll throw on for now.
 
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Old 06-14-2009, 03:01 PM
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Sounds good to me... As long as it's sealed again it should last.

-Enjoy
fh : )_~
 
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Old 06-14-2009, 03:32 PM
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Hope that works I'm thinking the same thing is happening internally why else would they always start loosing the insulation right at the sensor instead of anywhere else in the wiring.
 
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Old 06-14-2009, 03:39 PM
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That is the stress point on the wires.

All the motor vibes are shaking the bejesus out of them at that point, when the start to heat harden it just breaks away.

-Enjoy
fh : )_~
 
  #21  
Old 06-14-2009, 04:18 PM
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Yea I have thought of that but if the wires are not touching why would the sensor quit I just always thought maybe getting some internall heat as other wires hooked to the engine are not as prone to cracking near as bad. Hopefully your right it would slow the sale of the new sensors.
 
  #22  
Old 06-14-2009, 06:15 PM
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It gets moisture in it and fails.

-Enjoy
fh : )_~
 
  #23  
Old 06-14-2009, 06:55 PM
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Yea that makes sense too.
 
  #24  
Old 09-29-2009, 11:42 PM
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Originally Posted by 88f150302
ok i have a question my tach works when i am cranking it bouces but thats it when it starts it dosnt work at all could that be the sensor?
I am having this exact same problem with my Tach, did cleaning it help, or did you end up having to replace the sensor? Thx.

AB
 
  #25  
Old 11-08-2009, 03:00 PM
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i tested my sensor and got 2600 ohms........does this mean the sensor is good for sure???
 
  #26  
Old 11-08-2009, 08:27 PM
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i also have the same problem, would the bad sensor that bounces the tach all over would that cause the tranny to slip at all?
 
  #27  
Old 11-08-2009, 09:07 PM
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It i dont think it will make the tranny slip. It will make it shift funny tho.
 
  #28  
Old 11-08-2009, 09:43 PM
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thanks, i will have to check the filter to see if it fell off..
 
  #29  
Old 02-14-2010, 02:04 PM
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I finally replaced my tach sensor and it works perfectly now. Now I know what my cold idle speed is. It doesn't bounce with the turn signals anymore either. I love having a fully functioning guage cluster.
 
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