Quote:
Originally Posted by Homeoboxter
Just hypothetically, if the O-rings inside the variocam are worn out/broken and they no longer can hold the pressure as they are supposed to, they can leak more when the oil is hotter and thus thinner, leading to more frequent triggering of the CEL. So it does not work better in a cooler motor, just it`s more likely to fail when it`s at normal operating temperature. Assuming this to be correct, thicker oil would give you even less frequent CEL.
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Yes, that was my theory as well. I went to a 40wt oil but didn’t really notice much difference.
Any idea why the CEL would be clearing on its own? Is it documented anywhere what the 1341 CEL algorithm might be? What sets it off? How many degrees off, at normal engine temp, and maybe the number of times it has to happen? Over a period of time maybe?
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