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tranny diode issue

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Old Sep 19, 2007 | 02:52 AM
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kevin.ford-trucks's Avatar
kevin.ford-trucks
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tranny diode issue
Is there any way to tell if a tranny is likely to have the diode issue? or might eventually? I'm looking at a 00 model and my understanding is that it was prone to this problem. If there's no way to predict, what percentage had the problem?
 
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Old Sep 19, 2007 | 07:55 AM
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Mark Kovalsky
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The mechanical diode was introduced at the start of the 2001 model year. It was removed from production in March, 2001.

That 2000 model truck does not ahve a mechanical diode.
 
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Old Oct 29, 2007 | 12:29 PM
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ryanfrommn
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I have a 2001 f250 diesel with a 4r100 tranny...

the truck's production date was on 09/00.

do I have a diode tranny?

How can I tell if that is not enough information?


THANK YOU
 
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Old Oct 29, 2007 | 08:20 PM
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You have a mechanical diode in your trans. All the automatic transmissions attached to diesels built from July, 2000, through March, 2001 have a mechanical diode. Gas engine trucks DO NOT have the mechanical diode.
 
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Old Oct 31, 2007 | 01:01 AM
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Originally Posted by Mark Kovalsky
Gas engine trucks DO NOT have the mechanical diode.
Any one else confirm this? I've asked a bit about this topic before and this is the first time I've heard this.
 
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