autmatic transmission life expectancy? - Defender Source
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  #1  
Old March 21st, 2012, 11:06 PM
KYRover
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autmatic transmission life expectancy?

Pardon my spelling. *automatic*

How far do the auto's in the NAS D-90's usually go before needing a rebuild? I did a search and didn't find many answers.
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  #2  
Old March 21st, 2012, 11:37 PM
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They usually last about 30 seconds shorter than when you say "oh fuck".

Kidding aside I don't think you will get a straight answer on this but good luck.
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Old March 21st, 2012, 11:48 PM
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Seems like discos get 150k out of them pretty easy. I bet it would be prett close to that. New rebuilt Ashcroft units from lucky8 are like 1300 I think. I'm not too worried about mine. Kind of excited to get an Ashcroft when the day comes.
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Old March 22nd, 2012, 08:59 AM
KYRover
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So it doesn't sound like the automatic transmission is a common source of problems in Defenders?
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  #5  
Old March 22nd, 2012, 09:01 AM
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David Marchand
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No more than the manual.
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  #6  
Old March 22nd, 2012, 09:08 AM
KYRover
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Thanks for the replies.


Quote:
Originally Posted by dmarchand View Post
No more than the manual.
That pretty much answers my question.
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  #7  
Old March 22nd, 2012, 09:22 AM
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Your only real problem will be when you can't get it out of park because your brake switch has gone - no brake lights means not getting it out of park.
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  #8  
Old March 22nd, 2012, 09:45 AM
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200k easily
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  #9  
Old March 22nd, 2012, 10:52 AM
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If you change the fluid every 30k and drive the truck fairly regularly they will last forever.
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  #10  
Old March 22nd, 2012, 11:11 AM
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I have an '85 BMW with 225,000+ on a Zf 4hp22, change ATF every 60K still runs like day 1. The Zf has exactly the same gear ratios as the units in the Rovers.
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  #11  
Old March 25th, 2012, 02:18 AM
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Quote:
Originally Posted by rijosho View Post
Your only real problem will be when you can't get it out of park because your brake switch has gone - no brake lights means not getting it out of park.
But you don't need to hook that up if you convert your manual to an auto. So you do get rid of that pesky issue if you preform a swap. All I have is the neutral safety switch to the starter solenoid relay.
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  #12  
Old March 25th, 2012, 09:32 PM
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That ZF Box is probably the most reliable thing on a Defender. Bullet proof if you change the fluid occasionally.
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