Hello,

I have a 2002 Saturn SL2 (82,000 miles) Couple weeks ago, I've been hearing mteal clunking noise when I step on the gas. After much observation, this is what I happens:

- The clunking noise appears when I step on the gas
- It usually happens after driving my car for 3 hours
- The clunking noise goes on for an hour or two and disappears
- The clunking noise appears around 5-40MPH
- When clunking noise appears, the clunking noise increases as I step on the gas
- The clunking noise dissappears when car acclerates over 40-50MPH
- There is no clunking noise when I step on the gas in netural
- Recently, as clunking noise appeared as I pushed the gas, my rpm rapidly moved up and down from 1,800 - 2,000RPM

From this observation, could it be my throttle body or something else?

 

So it pretty much happens at random times.

Check your motor/transmission mounts. My guess is that the top motor mount is bad.