ANSWERS: 1
  • 19..?? Older cars have a vacuum system, that can be messed up. It can control things like vacuum advance http://www.highperformancepontiac.com/tech/vacuum_advance_tech/index.html. Some have vacuum also going to the transmission - depends on the age and make of the auto. With my 1977 truck it was all vacuum issues that lead to stalling and other stuff. I have to have all of the hoses and valves replaced. I would suggest you take the car to a mechanic and have them have a look see.

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