Acceleration Low Rattling Noise -Check Engine Light On on 2001 Volkswagen Beetle

After water pump and timer replacement, coolant leak fixed, I get a low rattling noise when accelerating. Check engine light came on. Has 109k miles. What we can do about it? Great site!

Asked by for the 2001 Volkswagen Beetle
change the spark plugs & wires .. if that doesnt work... you have to change the distributor
1 more answer
I had same problem. The cause was the catalytic