Any thoughts as to why my tranny feels like it is trying to shift at highway speeds while in Drive. Does not do it in Overdrive. It is a 700R4 with a vacuum line from the carb to a switch which has a wire and plug that goes to the tranny. Could the switch be bad or making a bad contact? Any thoughts. Here is a link showing the switch.
http://rides.webshots.com/photo/2516403700098853003mxxnyd?vhost=rides

Last edited by Jon D; 03/13/2010 3:08 AM.
1954 Chevy 5-Window FINISHED
1951 Chevy 1/2-ton pickup [b]FINISHED[/b]

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