Auto Transmission - Normal operation ?? -
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post #1 of 2 Old 03-03-2013, 09:10 AM Thread Starter
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2007 JK Wrangler 
Join Date: Jul 2009
Location: franklin, tn
Posts: 5
Auto Transmission - Normal operation ??

I have a 2007 JKUR, with 92,000. The auto transmission has developed a 'hard downshift' during deceleration. It doesn't happen all the time, but more than not. Seems only to happen after I have come up to speed and shifted into 4th/od. Then as I begin deceleration, I feel the hard downshifts. If I turn off the overdrive, it doesn't seem to happen. Upshifts are smooth.

I took it the a local transmission shop, and they ran diagnostics, and didn't find any trouble with the unit, at least nothing turned up on their scan tool. They said everything looks good, and suggested a 'reboot'.

The next day, I went to the dealer for my $16 coupon oil change, and talked to the service manager about the problem. He also indicated to try a 'reboot', and told me exactly how to do it(disconnect the battery, touch the cables together to dissipate the capacitors). I tried this but still no luck.

Before I take it back to the dealer, or any where else, for a thorough check, I was curious if any one else was experiencing this issue ?



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post #2 of 2 Old 03-03-2013, 10:10 AM
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2009 JK Wrangler 
Join Date: Dec 2005
Location: Montgomery, AL
Posts: 3,243
Did you change transmission fluid and filter change at 60,000 miles? Try that first. Make sure the fluid is ATF-4 synthetic. Suggest Valvoline.

2009 JK Rubicon
Shrockworks Mid-width, Warn 9.5Ti; Skid Row Engine Skid, LCA & Evaporator Skid; Rock Hard Gas Tank Skid; Warn Stainless Steel Diff Skids, 11,000# Pull-Pal. Uniden 520XL CB; 1" Front & 1/2" Coil Spacer Rear; Aeroforce Interceptor, Valentine 1.
Moab - TJ-4/2006, TJ-5/2008, 4/2009, 5/2011, 4/2013, 5/2016, 4/2017
Ouray - TJ-8/2007
Rubicon - TJ-9/2008

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