I have a 96 Intrepid with the 3.5. I bought this car with a bad engine to replace the motor as the body and interior is perfect and only gave 250 for the car. I got the salvage yard motor in and besides the injectors clicking a lot it runs great. Tons of power and smoot. I noticed a few days ago that just after I start it up if I rev the engine a little it gets a rattle just as the rpms start to drop back down. It seems to be coming form the lower rear of passenger side of the motor. When I was backing into my parking spot at work esterday the car died. Fired right back up but would barely stay running when it was in D or R. After work I started it up and it was running fine again. 'Normally' after driving for 10 or so miles it won't "rattle" again until after it has been sitting for a while. Is this somethign internal to the engine? A rod, Bearings, or is it trans related? Need urgent help as the engine is only under warranty for another 5 or 6 days.