aod transmission issues?
Thread Starter
|
New User
Joined: Sep 2013
Posts: 20
Likes: 0
From: Phoenix, Arizona
aod transmission issues?
hello, I have an 87 bronco xlt 5.0 with an AOD transmission. Recently when I shift into reverse it feels like its binding up. Before it would take a few seconds to shift into reverse and"pops into gear and now its a smooth shift and feels like it is binding up and shaking. Any help??
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
Have you checked fluid level while parked on a level surface with the transmission hot? How long has it been since the fluid and filter were replaced?
Assuming the answers to the above questions are "Fluid level is correct" and "Replaced at the last recommended interval" then its time to check other things. The AOD uses a TV Throttle Valve) cable to deal with shift points but it should have no bearing on reverse as I recall. Driveline slop including u-joints and slip-shaft should be checked as well. Check backlash at the differentials as well.
Assuming the answers to the above questions are "Fluid level is correct" and "Replaced at the last recommended interval" then its time to check other things. The AOD uses a TV Throttle Valve) cable to deal with shift points but it should have no bearing on reverse as I recall. Driveline slop including u-joints and slip-shaft should be checked as well. Check backlash at the differentials as well.
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
yea drop the pan and see whats up. i believe that tranny will use Mercon III fluid but double check. the wrong type of fluid will burn it up.
Trending Topics
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
As for a cause for the filter to drop: The filter is typically sealed to the sump tube in the bottom of the transmission by a simple rubber grommet that gets pushed up over the end of the tube. The weight of the filter may be supported additionally by a bolt or two or some odd clips. Either way, incessant vibrations that come from just the engine running are enough to let bolts back out or clips slip and the filter is too heavy once filled with fluid, for the grommet to hold it up alone. Given the relatively long intervals between fluid/filter changes in automatic transmissions, and the fact that all of these parts are internal (above the pan), there is no way to inspect for these types of failures without dropping the pan. If you are going that far, you might as well replace the things that can be replaced while you have it apart.
With all that said DO NOT over-tighten any hardware during installation!
With all that said DO NOT over-tighten any hardware during installation!
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Fords to Drive Before You Die
Joe Kucinski
3 Best / Worst Features Of The 2025+ Ford Expedition
Brett Foote
10 Ways Ford is LOSING to the Competition
Joe Kucinski
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
Thread Starter
|
New User
Joined: Sep 2013
Posts: 20
Likes: 0
From: Phoenix, Arizona
I replaced the filter and gasket, seemed like the old filter was gummed up. Still getting a whining noise and a ticking from the trans. But as far as the reverse issue, it doesn't shake when I turn my tires slightly.
Thread
Thread Starter
Forum
Replies
Last Post
ovalhead72
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
0
Jul 18, 2016 06:23 PM
tempest411
1987 - 1996 F150 & Larger F-Series Trucks
3
Apr 9, 2014 06:17 PM
aiminforthesky
Clutch, Transmission, Differential, Axle & Transfer Case
1
Nov 1, 2004 09:28 PM
MetallicaFan39
Clutch, Transmission, Differential, Axle & Transfer Case
5
Apr 21, 2004 11:06 PM