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My 2001 SAAB 9.5 shuts down in the middle of driving….we have changed the alternator and battery because it did not want to start…and needed jumped all the time….now, if it feels like it, it will start, but after driving it for a while, all the dashboard lights turn on, and it just shuts off in the middle of driving….if it sits a couple hours, it will start back up again…sometimes when the key is turned, it just ticks, ticcks, ticks…..sometimes it will start…..HELP !!!! could the relay box be causing this problem?

My Riviera died about a week ago…had no acceleration, and then just quit…was told it was bad fuel pump, so we had it replaced.  We drove for about 3 days, and symptoms were happening again.  It bogs, then won’t go.  It will start right up, then die or run with barely any acceleration.  (It sort of like when you run out of gas). We found out after a week, that guy who did fuel pump never changed the fuel filter.  So, we did this.  Now it’s doing the same thing again

Any suggestions?  Could it be that we drove on old filter for a week that the new pump is now bad?  HELP!!