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Unread 07-20-2009   #1 (permalink)
r1dncln is offline Rookie


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Default 1992 Mustang LX AOD Transmission Problem

Hey, thanks for your responses...

A few months ago, my OverDrive went out on my automatic transmission. My drive gear [D] still works great, however I do not get a 4th gear... So I pretty much just drive around in drive, and try not to exceed 3K RPMS in 3rd gear. Does this sound like the OD band went out? Does [D] Drive gear normally get 4th gear? or do they only get 3 gears in your cars as well? Any ideas of what the problem could be here? Thanks
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Unread 07-20-2009   #2 (permalink)
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My OD went out to, its a weak gear. If its in (D) its only 1st threw third and you can drive it that way, I have been doing it for a few months but my work is 5 miles from home.... When my (OD) went out I was on the interstate and heard a LOUD bang, and the rpms shot up like it was in nuetral, so I put it in nuetral and back into (OD) and it engaged for a min.. Then BANG... it slipped, so now I always drive around with it in (D). A rebuild will fix it.... I have had one rebuilt on a diff. mustang, an 89 and spent 850 with a shift kit and new stall converter (stock). and plan got qouted on the same price just recently to do the same and rebuild the 91.... Its fine to do though, its a little more wear and tear and a little gas but...... Nothing thats extreme unless you cruise the interstate all the time. Hope this helps
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91 GT convert. GT40P's, Off Road H-PIPE, Flowmasters, 4.10s, posi rear, welded subframes, 70mm TB, TFS Stage 1 cam, 155lph holley pump, Cobra intake mani, ford racing headers, Allum. Radiator, No smog, Freashly rebuilt......

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Unread 07-20-2009   #3 (permalink)
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OD servos are notorious in the AOD's for failing....problem may be as easy as replacing the OD servo with an A or A+ super servo...this wsa exactly my problem..I replaced it and shifts like new...and not too difficult to do. If you decide to go that route, PM me and Ill help. There is a very important step you must do before buttoning the tranny up or youll be taking everything apart again. Let me know.
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BBK Fender Cold Air, Ford E303, Cobra Intakes, Kirban Adj Fuel Reg, FRPP 65mm TB, 19# Explorer injectors, MAF Conversion, TF Valve Springs, BBK Equal Length Shorty's, KYB's all around, Magnaflow 2.5 high flow cats H pipe, American Thunder's, 3.73's, Speedo gear, AOD w/Performance Automatic street/strip valve body, Overdrive A+ Super Servo, 2-3 Accumulator upgrade, Urethane motor and tranny mounts, Smog, EGR and A/C delete
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Unread 07-20-2009   #4 (permalink)
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Hey MASSHOLE... Do you have any pics from when you did it ?
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"Nitrous Oxide is like a hot chick with an STD. You want to hit it but you are affraid of the consequences."

91 GT convert. GT40P's, Off Road H-PIPE, Flowmasters, 4.10s, posi rear, welded subframes, 70mm TB, TFS Stage 1 cam, 155lph holley pump, Cobra intake mani, ford racing headers, Allum. Radiator, No smog, Freashly rebuilt......

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Unread 07-21-2009   #5 (permalink)
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I bought a video that is very detailed on rebuilding the AOD. It looks straight forward. How to Rebuild the Ford AOD Automatic Over Drive Transmission DVD Video


You might be able to see all of it on You Tube for free.

Anyway good luck
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Unread 07-21-2009   #6 (permalink)
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I have had people suggest that before, is it really that easy to rebuild. Do I need any special tools. I have alot of tools and air tools but........? How did it turn out for you ?
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"Nitrous Oxide is like a hot chick with an STD. You want to hit it but you are affraid of the consequences."

91 GT convert. GT40P's, Off Road H-PIPE, Flowmasters, 4.10s, posi rear, welded subframes, 70mm TB, TFS Stage 1 cam, 155lph holley pump, Cobra intake mani, ford racing headers, Allum. Radiator, No smog, Freashly rebuilt......

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Unread 07-21-2009   #7 (permalink)
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If u choose to rebuild the entire tranny, I suggest you have someone close by with experience to help...and Jeff, to answer ur question, I have lots of pics...all in my head!!!
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1988 GT Vert 70K
BBK Fender Cold Air, Ford E303, Cobra Intakes, Kirban Adj Fuel Reg, FRPP 65mm TB, 19# Explorer injectors, MAF Conversion, TF Valve Springs, BBK Equal Length Shorty's, KYB's all around, Magnaflow 2.5 high flow cats H pipe, American Thunder's, 3.73's, Speedo gear, AOD w/Performance Automatic street/strip valve body, Overdrive A+ Super Servo, 2-3 Accumulator upgrade, Urethane motor and tranny mounts, Smog, EGR and A/C delete
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