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Thread: Rebuilt A340F Transmission with the dreaded "P0770" code
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Old 12-30-2022, 11:24 PM
Traxx Traxx is offline
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Join Date: Nov 2021
Location: Fayetteville
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Traxx is on a distinguished road
Traxx Traxx is offline
Junior Member
 
Join Date: Nov 2021
Location: Fayetteville
Posts: 3
Traxx is on a distinguished road
Is the TC releasing when it needs to come out of lock up? You can test it by getting up to 55 mph. Keep your right foot on the throttle maintaining speed, tap the brake pedal with your left foot and watch the tach. It should jump up 200 or so rpm. If it usually occurs climbing a hill try to hit the OD button to drop down into 3rd and see if it will still throw the code.
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