I have a 96 Sable that has been bucking at 40-45mph. My ignition coil pack keeps burning out, and when it does i feel that same exact bucking at all speeds and while idol. Makes me think its an engine miss of sorts. but even when i change my pack all other speeds go back to normal. Except 40-45...
My spree worked fine last year, I worked on it all summer getting it in tip top shape... My dad moved it in his van never tipping it... Tried to run it at its new location and now it wont turn over! Its not the battery... I have ruled that out... the relay makes a click when I try to start it...