Cam Sensor Isolation Wire
Thread Starter
Junior Member
Joined: May 2021
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GL450
Cam Sensor Isolation Wire
I've found several numbers for the isolation wire, but they all say discontinued. Somebody have a current part number. I have a 2013 GL450, but I don't think it makes a difference.
Correct me if I'm wrong, but the leaking through the sensor, while irritating, isn't the big problem. The problem is what it does to the ECM. If you have minor leaking the isolation wire should be all you need?
Correct me if I'm wrong, but the leaking through the sensor, while irritating, isn't the big problem. The problem is what it does to the ECM. If you have minor leaking the isolation wire should be all you need?
Out Of Control!!
Joined: Sep 2018
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From: unbegrenzt
2017 GLE350 4MATIC
In principle, yes to the question of the function of the isolation jumper (pigtail).
Oil insulates the signal between sensor and ECU and can create intermittent contact. Intermittent contact can create an error in the ECU resulting in misfire and CEL. Over enough time and enough oil in the harness, other pins at the ECU end could become contaminated, beyond the offending leak source which are the cam position sensors and, apparently to a smaller degree, the cam magnets.
Oil insulates the signal between sensor and ECU and can create intermittent contact. Intermittent contact can create an error in the ECU resulting in misfire and CEL. Over enough time and enough oil in the harness, other pins at the ECU end could become contaminated, beyond the offending leak source which are the cam position sensors and, apparently to a smaller degree, the cam magnets.
