Quote:
Originally Posted by midnightghost
car gave out one day while driving changed my crankshaft position sensor both my cam shaft sensors my throttle body put a new alternator battery and power distribution box checked all my ground wires too car starts all my lights are on but I have no power at all car won't drive but starts fine I try too connect my mhd and it won’t read but when I connect a cheap obd scanner it tells me no dtc definition found took the car too bmw and 3 other mechanics and they couldn’t figure out what was wrong so car starts but has no power at all and my rpm gauge jumps around any help ?
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No DTC definition found could mean the code is BMW proprietary. Thus
Baron95's advice to get a BMW specific scan tool is spot on.
RPM gauge jumping around casts suspicion on the crankshaft sensor or signal transmitted to the ECU.
Assuming you checked the new sensor was correctly installed with the right amount of space between the sensor and the reluctor disc? Also, you need to confirm the disc is not loose (or damaged, cracked).
If everything at the sensor end is ok then the connector and wiring from the connector to the ECU is suspect.
But I'd get the BMW scan tool and arm yourself with as much error code and error code detail as you can before proceeding.