Quote:
Originally Posted by JZeke
Right, I have found the P1341 info before - hence why I was considering looking at a new solenoid to start. My understanding with the 986.2 is that with Variocam Plus (oil driven, infinitely variable adjustment) faulty actuators aren't the same as with a 986.1 and its DME-driven actuator. With a Plus engine, my understanding is the oil passage would have to be blocked (potentially with either green bits from a solenoid O-Ring or brown bits from chain guides - something I'm looking for next oil change.)
What I am asking though is if the circumstances that caused these initially haven't been repeated, why would they come back? Could a misfire duration of less than 10 minutes from a poorly seated plug cause cat failure? Just seems odd that 2 specific situations that haven't repeated would result in these conditions.
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Blindly swapping parts without actually knowing where the fault lies is waste of time and money. You don't know if it is the unit itself, or a problem with the wiring, which is very common.
The Vario Cam plus system can be test and activated with the appropriate diagnostic tool while still in the running engine, and the unit can actually also be removed and bench tested with a 9 volt battery. As for the oil passages, again, proper diagnostics will show you if that is the case; more than once, we have "saved" a Vario Cam actuator by simply pulling it out cleaning it out, testing it, and then cleaning it out. And these things ain't cheap.
Cats fail for all sorts of reasons, sometimes another fault simply pushes it over the edge, but again, proper diagnostics can tell you if it is bad or not.
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