97 D-90 Auto Transmission Shifting at Higher RPM - Defender Source
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  #1  
Old October 15th, 2006, 02:54 PM
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Susan C. Daniero
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97 D-90 Auto Transmission Shifting at Higher RPM

We have a 97 Defender 90 that is shifting at higher rpm points than normal. When it is shifting it is a little rougher than normal. Has anyone had this problem? Any suggestions before I have a mechanic look at it?
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  #2  
Old October 15th, 2006, 02:57 PM
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Johnathan Tisdale
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have you adjusted the kickdown cable?
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Old October 15th, 2006, 02:58 PM
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First things I would check are the level and condition of the fluid. If those are good, I'd look for broken or rotted vacuum lines leading to the transmission as well as on top of the engine. Then I'd have a tranny shop do any band adjustments and check the pressure modulator. Doesn't sound yet like it's worn bands or clutchpacks, but then again I'm not a tranny guy.

-Hans
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Old October 15th, 2006, 03:04 PM
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Susan C. Daniero
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We haven't run any diagnostics on it yet. I just noticed it yesterday. We will take a closer look @ it tomorrow. Thanks for the suggestions, hope its nothing major!
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Old October 15th, 2006, 03:09 PM
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Is it on the '94 on your website? My guess then is probably just needs adjustment, conversions sometimes don't get all the bugs worked out fully if they are done at home and dealerships usually don't look at transmission adjustments unless you specify that you want them done. I'd maybe go through the full adjustment process straight from the manual to make sure everything is done to the proper specs.

-Hans
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Old October 15th, 2006, 03:22 PM
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could also be a vacuum hose problem. Check all hoses..
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Old October 15th, 2006, 03:46 PM
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Susan C. Daniero
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No, its not the 94 on our website. It is a 1997 that we bought from Northern Califonia. It's not ready for sale yet, until we check it out thoroughly. The 94 is an automatic conversion, when we received it we had new breather tubes installed & replaced the internal oil pump in the transmission. That one shifts great, that's why I know this one needs some type of adjustment or repair.
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Old October 30th, 2006, 05:35 PM
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Susan C. Daniero
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Smile Kickdown Cable

Thanks for the suggestions! They really helped my mechanic diagnose & repair the problem. Jonathan you are the winner! The kickdown cable needed adjustment. It shifts great & with such a simple repair.
Thanks
Susan
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