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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Crankshaft Sensor Replacement Difficulty



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      05-21-2010, 08:58 AM   #1
binaryagent
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Crankshaft Sensor Replacement Difficulty

Does anyone know how difficult it is to replace the crankshaft sensor on a 335i? I apparently need a new one and the dealer is charging me over $500. I can see that the part itself is $116 so he's got to be figuring a couple of technician hours for the labor.

Thanks for the help.
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      05-21-2010, 10:06 AM   #2
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Crankshaft looks very easy. Because it's on the lower part of the block you need to raise the car. Can probably be done with jackstands on the front, or ramps if you want to be really tight.

You just remove the mounting bolt , pull off the sensor, disconnect the wire harness, and put the new one in, plug in the wire harness, tighten the bolt (only 6ft lbs of torque). There may be a little oil that comes out, so be ready for it. Also use a new oring (might be supplied with the new part) and then lower the car and clear your codes with the BT tool.

It's located at the rear of the block below the starter. Order a Bentley Manual from Amazon for pictures (best $85 you can spend on DIY info)

Done!

* Looks like they are charging you 2.5-3 hours of labor for a 30 minute job...typical.
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Last edited by scottp999; 05-21-2010 at 10:12 AM.
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      05-24-2010, 08:17 PM   #3
binaryagent
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Great info. Thanks.
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      11-07-2011, 11:44 PM   #4
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Quote:
Originally Posted by binaryagent View Post
Great info. Thanks.
Was it as simple as reported? I think I need to replace mine as well.
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      11-08-2011, 06:13 AM   #5
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Quote:
Originally Posted by scottp999 View Post
Crankshaft looks very easy. Because it's on the lower part of the block you need to raise the car. Can probably be done with jackstands on the front, or ramps if you want to be really tight.

You just remove the mounting bolt , pull off the sensor, disconnect the wire harness, and put the new one in, plug in the wire harness, tighten the bolt (only 6ft lbs of torque). There may be a little oil that comes out, so be ready for it. Also use a new oring (might be supplied with the new part) and then lower the car and clear your codes with the BT tool.

It's located at the rear of the block below the starter. Order a Bentley Manual from Amazon for pictures (best $85 you can spend on DIY info)

Done!

* Looks like they are charging you 2.5-3 hours of labor for a 30 minute job...typical.
I'm not sure for this job, but for most sensor replacements, BMW recommends clearing the trouble codes FIRST before removing the old sensor.
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