M42 won't rev pass 3500???? Bogs.

[fiftytakedowns]

Bumping for justice.

[fiftytakedowns]

you get anywhere with this?

[ziggysmoov]

Just curious if this was ever resolved?

[Nairb]

Here's a video I posted years ago.. hope it helps some people. It turned out to be my CRANKSHAFT Position Sensor.

https://www.youtube.com/watch?v=bPNIZQ5kn3w

[ziggysmoov]

It looks like previous owner for my car replaced the crank sensor already. I did however purchase a replacement one from eBay. Brand new Bosch and issue still persisted. If anything made it worse because I couldn’t get the car to stay on after cranking over until I twisted the crank sensor away a bit. The Allen bolt that holds it down isn’t even lined up with the hole but at least keeps the car running.

Did you replace your crank sensor with the OEM BMW sensor that is like $240+?




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[ziggysmoov]

Update:

So I replaced the crank sensor with a Bmw OEM crank sensor. On the catalog it is listed as pulse generator. Now the car has power through the gears and no longer bogs when cold. Steer clear from Bosch crank shaft sensors as the OHM readings are out of spec!

The previous owner of my 318i replaced the crank sensor with a Bosch one, I did not realize it until removing it to replace it with another Bosch one. Save yourself the trouble and don’t use aftermarket sensors for the M42 as the car seems to not like it very much!


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[Nairb]

Has your problem been solved with new CPS?