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Discussion Starter · #1 ·

I have 2003 st220 bought car about half year ago and its have couple issues.

When car is on idle engine makes knock sound not bad but u can hear it. But when press throttle it disapears. Car sometimes give code p0430 catalysator thing.

Second problem is high revs when cruising. If i swith neutral on road revs goes up to 1.5k and stay but if i stop the car rev goes normal 800rpm.

Sorry for bad english.
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