Did not change oil on time.
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2004 Dodge Ram 2500 Question: engine making knocking sound, what is wrong? Engine light came on.
Answer #1sinautoscan.com October 09, 2009, 18:52Master
I seen a truck like this before with low oil it seems as this is a common problem, check the oil level if it has no oil it will make a knocking sound, don't drive without checking the oil level, if the Engine Light is on i suggest you get a scantool and diagnose the problem Autozone does this for free