M50 glitch/fault/problem - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 10-24-2008, 01:28 AM
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M50 glitch/fault/problem

Hi BMW owners, I have now my first BMW e34 M50 ( no vanos) and it decided to give me some grief. Hitting the net and reading a lot of faults with this model, I have followed all the quick checks I can. Fuel side is fine with every thing in the chain working, relays, pump, pressure. I did the fuid spray in the intake and still no start. (turns over but will not fire). Took off a coil pack and did the screwdriver test, no spark. Following common advice on the the net I changed the CPS out with no result. Put both CPS units on the multi meter and get a reading of 520 ohm. I have full electrics on the car but between this system and the plugs theres a problem. I can only point the finger at the ECU (0 261 200 403). If I reset the computer and still have this problem am I on the right path?
Regards to those that can help. Here it is unburnt, but soon maybe...


Ric

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#2 (permalink) Old 10-24-2008, 01:56 PM
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Crankshaft sensor or camshaft sensor

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#3 (permalink) Old 10-24-2008, 02:29 PM
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Download the Bentley service manual pinned at the top of the 5 series subforum. It's a great troubleshooting tool.

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#4 (permalink) Old 10-25-2008, 03:42 AM
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Quote:
Originally Posted by Torque View Post
Download the Bentley service manual pinned at the top of the 5 series subforum. It's a great troubleshooting tool.
Hi Torque, Did that a few days ago and yes it's a good guide. Still have my problem. info not going into the ECU or ECU not letting it out. Have fitted a new Crank sensor with no result. New battery, new starter motor, new fuel lines, new plugs, new relay's, new hoses, new rad core, new "steel" water pump.. Will battle on.....
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#5 (permalink) Old 10-25-2008, 09:30 AM
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Question

If anyone knows, the Bentley refers to testing the crank sensor and getting 540 ohms for the m20/m30 sensor. The sensor supllied by the dealer gives this reading as the old one does as well. Bentley states for the m50 is much higher, is this critical?
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