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Unread 01-01-2012   #1 (permalink)
89ponyboy is offline Apprentice


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Bartow   Florida
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Default 89 Mustang 2.3L with A4LD not shifting into overdrive

My A4LD tranny stopped shifting into overdrive after I adjusted My bands, Did I adjust them wrong? I snugged then backed them off 2 turns. 1,2,3 and R shift great if anything it maybe shifting to late which i kinda like but when it goes to shift into overdrive its like it goes to shift from 3rd to 4th but stays in 3rd it doesnt seem to be slipping I say this because it still accels and picks up speed but doesnt shift and im going like 70mph at 3500rpms when it sould be like 2500rpm. Ive had this car for 6 years and enjoy it very much and I know that this issue isnt normal. No codes on the eec were found the speed sensor and tc is new and i checked/cleaned the valve body. Someone please help!!
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Unread 01-06-2012   #2 (permalink)
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thanks everyone for all your help lol
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Unread 01-06-2012   #3 (permalink)
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Why did you adjust the bands to begin with? Were you having a shifting problem? Adjusting the bands is NOT part of routine maintenance. The bands are normally only adjusted at the time of rebuild. Was the transmission shifting normally BEFORE you adjusted the bands?

Everybody's "snug" is not the same. Try readjusting the OD band again. Tighten to 10 lb/ft, back off EXACTLY 2 turns, then WHILE HOLDING THE ADJUSTMENT BOLT TO PREVENT IT FROM TURNING, tighten the locking nut to about 35 to 40 lb/ft. (This one can just be good and snug with a medium sized wrench). Check to be sure that the modulator valve is NOT leaking. (No fluid in the vacuum line). Check to be sure that the vacuum line going to the modulator valve is in good condition and has a good vacuum on it. Also double check your shift linkage to be sure that it is adjusted correctly.

Last edited by davido30093; 01-06-2012 at 05:52 PM. Reason: Add info.
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