Ove Posted March 17 Share Posted March 17 Hi guys. I need help to find out whats wrong. My 55 Century w dynaflow is acting strange when warm/hot. I'll start from the beginning.Trans is renovated 7-8 years ago,but havent driven more than 1000 miles per year since. End of last summer it suddenly started to slip when it got warm ,both in low and D .It works perfekt cold. Oil level good.Run type A for 15years ,worked good. Some guys say to put in a new cooler. Need your advice. Thanks. Ove Link to comment Share on other sites More sharing options...
Oldtech Posted March 18 Share Posted March 18 Cooler won't help. Suspect a torque converter issue if it is doing it in both L and D. Link to comment Share on other sites More sharing options...
Ove Posted March 18 Author Share Posted March 18 7 hours ago, Oldtech said: Cooler won't help. Suspect a torque converter issue if it is doing it in both L and D. Ok.but wouldnt it start slip earlier then? Its just when Ive been driven it a while.Like when I go to 20 min at 55 ,stop for a meal and when Im going home after 30 min then I notice it . Its like drive a manual with the couch half way down. Link to comment Share on other sites More sharing options...
Oldtech Posted March 18 Share Posted March 18 Well that is a bit puzzling. Post this down in the post war Buick forum, lots of Dyna experts there. I'm mostly going by what is common to both Lo and Drive, which on this transmission is the converter, but I'm not a pro on this box. Link to comment Share on other sites More sharing options...
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