Hey everyone, pleased to say that 99.9% of my 500E, bad mechanic shop issues have been solved. I feel like I know this car so well at this point. I guess I’ll be keeping it for the rest of my life. 
Still having one issue. Read another post on here about a car that had hesitation, in the warm cycle between 1500 RMP and 3500 RPM. Again, only when the car is warm. Mine is doing the same thing. When the car is cold it has stunning power. But, once the car is warm it has the same slight hesitation. I do not have a rough idle however, but every now and again it might stumble. Though, that does not happen much. The loss in power is small-ish. Most would not notice, but like I said, I know this car pretty well. I’m not sure, if, when I replaced my crankshaft position sensor, I purchased an OEM or cheap sensor. As that solved the other posts issue I’m just going to buy an OEM and replace it.
I get no codes on MBStar, I did have a few registered codes on the DM they were as follows; the idle switch, throttle potentiometer, and last O2 sensor voltage high/low. All cleared and no codes present after clearing.
I was looking for an OEM crankshaft position sensor and noticed that there is a front crankshaft position sensor. I was unaware of that. Where is it? I guess if there is a front unit I should replace that too. No codes for crankshaft sensor issues, but the other post did not either. I might have a knock off sensor and need to get OEM.
Thanks again as always. You all are life savers for us newb wanna-be mechanics. I can never thank this site and the people that post enough. -Matt
Still having one issue. Read another post on here about a car that had hesitation, in the warm cycle between 1500 RMP and 3500 RPM. Again, only when the car is warm. Mine is doing the same thing. When the car is cold it has stunning power. But, once the car is warm it has the same slight hesitation. I do not have a rough idle however, but every now and again it might stumble. Though, that does not happen much. The loss in power is small-ish. Most would not notice, but like I said, I know this car pretty well. I’m not sure, if, when I replaced my crankshaft position sensor, I purchased an OEM or cheap sensor. As that solved the other posts issue I’m just going to buy an OEM and replace it. I get no codes on MBStar, I did have a few registered codes on the DM they were as follows; the idle switch, throttle potentiometer, and last O2 sensor voltage high/low. All cleared and no codes present after clearing.
I was looking for an OEM crankshaft position sensor and noticed that there is a front crankshaft position sensor. I was unaware of that. Where is it? I guess if there is a front unit I should replace that too. No codes for crankshaft sensor issues, but the other post did not either. I might have a knock off sensor and need to get OEM.
Thanks again as always. You all are life savers for us newb wanna-be mechanics. I can never thank this site and the people that post enough. -Matt
