what is wrong when i have a rattling sound whenever i press on the gas?
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1999 Dodge Dakota Question: rattling sound
patrick mannion from Greg Solow's Engine Room, May 19, 2009, 21:39Master
If you hear a rattling sound under your truck or in the area of the engine compartment when you press the accelerator pedal I suspect the exhaust system may have a problem, either a heat shield or muffler that has deteriorated, or a catalytic converter that is breaking up internally bu this should set a P0420 trouble code.
I hope your rattling sound is not internally in the engine, check the engine oil level and get a mechanic to give there opinion. Get it looked at as soon as possible to save possibly doing more serious damage.
Answer #2Visitor, September 26, 2010, 10:07
sounds like the catalytic converter....I had the same prob...more noticeable when first starting and would go away once warm.