AOD Ford tranny (lost fourth gear) - Hot Rod Forum : Hotrodders Bulletin Board
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Old 04-09-2002, 02:52 PM
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Question AOD Ford tranny (lost fourth gear)

85 crown vic with a AOD tranny 4 speed when i first got it it worked just fine i took the motor out and put it back in but when i put it back in something went wrong it slams every gear the only time it doesnt slam the gears when shifting is when i have it floored and it revs too high too before it shifts and i dont have fourth gear either until im doin at least 60 mph or more then if i hit the gas again it jumps down to third and screams what went wrong and im gonna have a lot of fun with this car should i put the indestructable C6 in it so i dont break another AOD i do want the fourth gear but i heard that they suck please give me your opinions

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Old 04-09-2002, 06:53 PM
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Hook up vacume to modulater and it should shift correctly
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Old 04-09-2002, 07:09 PM
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I don't have a lot of experience with the AOD trans but I believe their is a cable (in place of what used to be a kickdown lever) but I forget its name. It needs to be adjusted correctly or it will screw up your shifts and burn up the trans. I will check at work tommorrow with some of our trans guys. I can't remember offhand if that cable is on the AOD or the AODE trans.

[ April 09, 2002: Message edited by: dmorris1200 ]</p>
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Old 04-10-2002, 04:41 PM
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Well I checked at work and the AOD uses what Ford calls a tv (throttle valve) cable on most AOD transmissions. The cable regulates line pressures. This way the transmission line pressures remain low while out of gear and are increased according to demand. If it is not adjusted correctly or not working properly (linkage damage in trans, bushing damage to cable) it can wipe out your trans. There's a special tool used to set the cable but you should be able to makeshift a tool to work. If you want let me know I can try to copy and e-mail you some of the illustrations and directions from a service manual. If this cable isn't set correctly you could be shifting with too much or too little line pressure.

[ April 10, 2002: Message edited by: dmorris1200 ]</p>
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Old 04-10-2002, 08:31 PM
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dmorris would u please? im goin to be the stupid one and tear out the tranny to have it completely rebuilt for nothing
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Old 04-11-2002, 02:33 PM
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I'm going to make some copies and send what I can to the e-mail address you have listed.
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Old 10-11-2002, 05:17 PM
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oh my gosh!!!
I have exactly the same problem....and round here nobody knows about the AOD's...;-(
....i have a cobra replica with a lot of problems...;-(
...but now THIS is important to me !!!....I want my 4th gear back...*fg
...can anyone send pictures or so to sholin-flow@t-online.de THNX!!!
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Old 10-11-2002, 05:39 PM
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The '85 TOWNCAR had a TV (Throttle Valve) Lever. The cable didn't come in until the next year of production. Make sure you get him the correct section (FORD-MERC-LINCOLN) for proper adjustment. It may require a pressure gauge to set it correctly.

There is also a grommet (Basic No. 7F330) where the lever/cable connects to the throttle body. These break easily and will not retain the proper pressure on the lever/cable.

If you are using a AOD retrofit on an earlier engine (carb), companies such as WINDSOR-FOX make adaptor kits that take the guesswork out of it.

AOD is a fine transmission.
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Old 10-13-2002, 01:48 PM
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My 88 towncar has an AOD and it fine (after 2 rebuilds), and the cable you are talking about in the "tv cable" and an AOD DOESN'T HAVE A MODULATOR!!!!! anyways, if you want performance get it rebuilt with the "4r70w" gears (new stang gears), shift kit, and a trans cooler. The AOD is real bad about overheating. I got the things listed above done to my trans and I cango from 0-60 in about 9.8 seconds and can bark the tires hitting second even at full throtle hitting about 45 mph. have fun with your ford
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