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Old 11-29-2001, 07:39 PM
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Help! Trying to replace cam position sensor on M104 engine

I had my independent tell me that I could order the part and easily replace it myself (old one was cracked in half). So I tried it for my '90 300CE. (The old sensor was staying engaged even though cracked.) But I have not been able to disengage the plug from the part of the old sensor into which it was plugged. The metal piece in the middle of the old sensor moves around, but I can't get the plastic piece surrounding it out of the plug. I even broke off a piece of the plug in an attempt to loosen it up. Anybody have any ideas? The old sensor pretty well disintegrated on the part of it that held together in the past, so I don't think I can drive the car. I have tried to tape it together so I can drive the car to the indie, but I am afraid to start it.

Thanks in advance for any help.

Mike Hartigan
Tucson, Arizona

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Old 11-30-2001, 11:55 PM
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Problem resolved

The indie told me that there was no problem starting the car with the cam sensor disengaged. So I drove the car to his shop, and he was able to dig out the broken piece of the old sensor from the plug, and put the plug into the new sensor. So all is taken care of. I wonder what the cam sensor actually does. Something about variable valve timing I think, but it didn't seem to make any difference at all driving the car with the sensor disengaged.

90 300CE, 140K
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Old 12-01-2001, 12:07 AM
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Join Date: Oct 2001
Location: Canada
Posts: 298
I guess Crankshaft position sensor actually provide the basic timing, camshaft position sensor is use to adjust valve timing, you won't feel difference unless you drive it hard.
99 BMW 540i 6-speed 110K Km
03 SAAB 9-5 wagon 80K Km
92 400E (Sold) 245K km
Still missing the days with the Benz, it kept me busy.
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Old 12-01-2001, 08:32 PM
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Thanks, Carman.

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