Caius Theory

Now with even more cowbell…

BMW 328i crankshaft sensor issue

My 1996 e36 BMW 328i Convertible was having trouble starting, and it's always broken up slightly at idle since I took ownership of the car. On a couple of hot days last summer it also stalled during idle, then started doing it again recently (even though the ambient temperature was much colder.)

The main sympton at the point I took notice was it struggling to start, then hunting at idle until warm, then promptly stalling when warm and idling. It would also cut out when coming to a stop at junctions.

Reading the codes showed one related to the crankshaft sensor:

53 Crankshaft Sensor

(Codes can also show up in hex, which would be "83 Crankshaft Sensor".)

I duly replaced both the Crankshaft Sensor (Part # 12141703277) and the Camshaft Sensor (Part # 12141703221), but it was still throwing the crankshaft sensor code.

Upon closer inspection, the sensor wire in the plug for the crankshaft sensor wasn't pushed fully into the socket under the intake manifold. This lead to the ECU not being able to get a signal from the sensor, so it quite correctly threw a code and didn't run correctly.

Made sure all the pins were seated in the plug correctly, and reconnected the plug under the intake manifold and she started up perfectly. Drives much better, and the engine pulls more smoothly all the way up the rev range.

Nissan Almera Self Diagnostic Menu

Here's how to access the self diagnostic / configuration menu on a Nissan Almera 2003 SVE (N16):

  1. Start the engine
  2. Turn the radio on
  3. Turn the radio off
  4. Hold the info button in then:
  5. Turn the volume knob up (clockwise) until:
  6. Diagnostic menu appears

From here you can do various things: run self-diagnostics; reset/change the main service counter; various other tests for the climate control, sat nav system, etc.