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Old Aug 14, 2010 | 08:35 PM
  #1  
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morimoto_87
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From: Omaha, NE
?Question?

I know its posted all over but cant find a post with the exact problem i have...my tach works when i rev my motor past 1000 RPM's but dropps to 0 when i let off, my OD light flashes when im under 40mph. Im almost possitive its my tach sensor but can someone tell me for sure. trans was pulled 3 weeks ago to replace flex plate, and it was doing it before and now after.
 
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Old Aug 14, 2010 | 09:25 PM
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FORDF250HDXLT
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From: Mi'kma'ki
your on the right track, with a tach sensor replacement morimoto.
 
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Old Aug 14, 2010 | 10:27 PM
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morimoto_87
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awesome, thanks!
 
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Old Aug 14, 2010 | 11:14 PM
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Festus Hagen
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I agree, Unfortunately it is a ford item only, E5TZ-17B384-A and last I heard was about $80!

-Enjoy
fh : )_~
 
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Old Aug 15, 2010 | 11:42 PM
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bduemig
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Originally Posted by morimoto_87
I know its posted all over but cant find a post with the exact problem i have...my tach works when i rev my motor past 1000 RPM's but dropps to 0 when i let off, my OD light flashes when im under 40mph. Im almost possitive its my tach sensor but can someone tell me for sure. trans was pulled 3 weeks ago to replace flex plate, and it was doing it before and now after.
I had the exact same problem. Tach worked above idle, od light flashed at idle, out when engine reved up. and engine fluxuated between 35 and 45 in ov erdrive.

Changed the tach sensor and everything went away!
 
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