Car is DEAD WTFFFFFFFFFFFFFF

anybody have an idea on what the hell my problem is???

If I knew anything about the 07s, I would be all over this, but I have no clue. I will say this, I have never heard of a W203 car, that just dies, and then can be brought back with a bad idle. When they die, it is the crank positions sensor, but then, it won't restart. Usually things develop with time. Symptons show, like poor mileage, bad accelerations, hiccups in performance.
Please do let us know the diagnosis.
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if you experience rough idle, it could be the fuel pump. If the fuel pump fails, no fuel delivered = engine shut off. failing pump doesn't mean you can't start the car, but it may not be working properly at full capacity.
happened easter sunday morning rpm started jumping up to 3k down to 800 over and over... put it into drive... didnt move... gave it some gas ... didnt move... just kept rough and " unstable " idle... died... turned it back on... worked fine... CEL came on and now its at the dealer.
i will get it back sometime tomorrow or on friday i guess... ill let you know what the prob is when i find out.
We tried to jump the car, but the engine would just keep turning and turning and wouldn't start.
After getting it to a shop, it turns out the alternator was shot. As a precaution, check your battery and make sure it is filled with water.
Also, did you tell the dealer is was SI Tuned? If not, not sure how they would even know. Should be fairly transparent to them.





- what kind of exhaust do you have?


