My car was running fine it was just leaking oil. I took it to a shop to get the seals on the motor replaced. They did that but when I got my car back it wasn't running as good as it was before. They said it was spark plugs r wires. So I replaced my spark plugs, wires, rotor cap distributor cap. Still was running bad. Took it to another shop they said they coulndt tell but my catylitic converter was bad so I replaced that. Car still not running rite. I mean loss of power not wanting to shift stalling out wen I turns corner. Sounds like a v6 r smaller car not like a 4.9 v8. Any suggestions