I have a 92 P/A and I have hear a 'rattling noise' under the car when I start driving! My brother thought it was the convector shield was loose or broke. I check it and it was fine! Could that noise be the balancer? Maybe this is why I have been replacing the cam sensor, ICM and spark plug wires with no results! Autozone told me today that the SES code was a 'MAF' or electrical problem!