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Old 08-21-2015, 03:16 PM   #1
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Default Bonneville no longer shifts up...

Hi guys, I have the following problem with my 1964 Pontiac Bonneville, We are about 60 miles down on the street, and stood at a traffic light , and were going on only in first gear .... the automatic transmission fluid is fine... I have no idea what could be the error....

please help me..
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Old 08-28-2015, 07:36 PM   #2
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Have you checked that the vaccum line to the shift modulator is intact and not leaking
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Old 08-29-2015, 03:19 AM   #3
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...there is no modulator on it.....
the transmission is a Super Hydra-Matic "315"





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Old 08-29-2015, 03:21 AM   #4
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the tansmisson is running good, i have clean this thing...






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