mercredi 7 janvier 2015

330 ci, electrical issue - troubleshooting

Hello



Found this great forum a few weeks ago.

I decided to join to discuss some issues.

I have a 2000 E46 330 ci with the M54B30 engine.

I am very happy with the car, BUT got some issues a while ago.

The engine starts with a long crank and has limited power and stalls at low revs, if I am not very careful when pulling off from first gear.



Also, the tachometer behaves slightly erratic - making jumps of a e few 100 RPM around 4-5 k RPM.



The DME reports code P0335 - crankshaft position sensor.



However, when I measured the crank sensor signal with a scope (using a breakout cable from the PCB of the DME) the signal looks solid. Voltage goes from zero to 5 V and there is no noise or other distortion of the signal.



I also checked the cam shaft sensors (inlet and exhaust) - they are working fine!



Right now I don***8217;t really know what to do.



Have you guys seen something similar in your cars?



Best regards/Gustaf




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