When you here a rattling noise from the engine at idle.
Never. The Saturn S series vehicles used a timing chain instead of a timing belt. And the chain is inside the engine, bathed in oil to keep it lubricated. The timing chain should be replaced whenever you rebuild the engine.
You are correct that the SL2 uses a timing chain. However, since it uses a timing chain it does not need to be replaced as does the timing BELT. In general, a timing chain should last the life of the engine.
Depends on miles on the engine - I traded in a 95 SL1 with 206,000 miles with the original timing chain still on the engine. My impression is that under normal circumstances, you should get at least 175,000 miles on a Saturn timing chain.
The Saturn sl2 does not have a timing belt, it has a timing chain. And under most conditions it does not need replacing.
A timing chain should last the life of the engine. Timing chains are INSIDE the engine and as such are constantly oiled. By the time the timing chain and/or tensioning mechanism is worn out, it's about time to rebuild the engine.
Removal of the timing chain cover, timing chain, and head are needed
The S series Saturn does not use a timing belt; all four cylinder Saturn's use a timing chain.
It has a chain that should last the life of the engine.
Timing chain
chain97 Saturn sc2 has a timing chain,its a pain to change though because there is not much clearance....but it can be done!
how do i change timing chain on 95 saturnsc1 1.9 sohc
All of the Saturn 4 cylinder engines used a timing chain. The V6 Saturn's used a timing belt.