hey ethan, thanks for your response. Yes my car does have an OBD II slot for read in. My friend has a cheap one and it told me my AMM was the problem. So I went to my Euro Mechanic, and put it on his mercedes cert. computer, and I was told my AMM is gone. However, they never give me the codes, just tell me what parts are not functioning properly. This is the only information I have. My car's been idling roughly lately, and sometimes so low my car will shut off. Sometimes while I drive even. I've been told my AMM is not functioning properly and it will cure the problem. I hopet his is it, what you think? thanks