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Q:

My eclipse makes a funny noise when i turn or when i get up to up to like 40 mph on 2001 Mitsubishi Eclipse

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think it is just the undercarriage coming loose but not sure
(1) Answer
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.