The timing chain may come into contact with the timing cover, causing noise in the engine. Replacement of worn timing chain components will be necessary to correct this concern.Google+
Car Problem Reports
Saturn SC2 Timing Chain May Come Into Contact With Timing Cover and Make Noise
Saturn SC2 Problem
Engine Affected: 1.9L 4 Cylinder DOHC
Average Mileage: 144,250 mi (98,000 mi - 219,000 mi)
Visitor, 2002 Saturn SC2, 138,000 mi
I keep hearing a rattling noise from my car and I was told it was my timing chain.