Mercedes-Benz CLK430 Problem Report
Mercedes-Benz CLK430 Rattle From Beneath Vehicle
When the engine is running, but the vehicle is not moving, a rattle heard from beneath the vehicle could indicate that one of the exhaust catalytic converters has failed. The substrate (the internal part of the catalyst that reduces emissions) can loosen and bounce around inside the canister section of the converter—the defective unit will need to be replaced. If this problem is ignored, the substrate can break down and reduce to a size that plugs the outlet pipe, which will cause a sudden loss in power.
rattle under car, took it to a local muffler shop and said back passenager side cat is bad. - Visitor
I STILL THE PROBLEM. DOES ANYONE KNOW HOW MUCH THE REPAIR WOULD COST? - Visitor
rattle on deceleration. replaced converters. - chetzema
Still have not fixed it. There is an EPA warranty on this, depending on the mileage, but they wouldn't cover it because my vehicle (which I purchased used) came in through Canada. - Visitor
One of the rear cats is rattling and requires replacement. - Jpest
Cables in the convertible top tend to break. If the convertible top stops operating prior to re...
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The bearing and pulley sheared off of my 1999 4.3 liter clk 430. And I need to find and install...