think it is just the undercarriage coming loose but not sure
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2001 Mitsubishi Eclipse Question: My eclipse makes a funny noise when i turn or when i get up to up to like 40 mph
Answer #1Bret Bodas from RepairPal Test Shop, July 14, 2009, 09:44Master
Many things can cause this and without driving the vehicle and visually inspecting it, it is almost impossible to know for sure what is happening. Some of these problems can be dangerous, so you should have it checked out soon by a professional shop.