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 Post subject: diff
Posted: Wed Jan 24, 2007 8:38 pm 
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hi guys and girls just wondering if i can get some advice
i have a xf ute that revs quite high roughly 2200rpm at 80km/h and over 3000 at 100 i have jacked up the rear end and put it in drive and the drivers wheel after getting up some speed when it slows down it stops and statrs to go backwards even when the speedo still reads 30km/h it is a drum brake rear end no lsd any advice would be greatly appriciated
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Posted: Thu Jan 25, 2007 8:13 pm 
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So, what you wanna know? exactly.

 

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Posted: Thu Jan 25, 2007 9:50 pm 
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its a single spinner, guessing its sending the power to the wheel with the less resistance.

is it a 3 speed auto? if it is 3000rpm at 100 is probably about right.

 

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Posted: Thu Jan 25, 2007 9:53 pm 
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is my diff stuffed or is it something else eg gear box (auto)
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Posted: Thu Jan 25, 2007 10:09 pm 
Getting Side Ways
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Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

Is it auto? if its a manual, then it would have 3.50:1 diff gears.
If its auto, it may not be changing into drive, or it slips a lot.
A lot of XF utes at that time had 2.77 or 3.23 diff ratios.

 

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Posted: Thu Jan 25, 2007 10:22 pm 
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it changes into all the gears but does so very fast on a n average take off it will go into third b4 40-50 kph then the revs just keep getting higher and when i take my foot off the accelarator it slows its self down quickley
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Posted: Fri Jan 26, 2007 7:40 pm 
Getting Side Ways
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Age: 49

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Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

Sounds like the kick down cable might be broken, and theres some slipping as well. When the cable is broken, it changes up gears quickly.

 

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