Can someone explain "faulty crankcase breather hose system" to me?
I had this problem last year and now, I'm assuming, again this year. The problem manifests itself as (very intermittent) loss of full power (almost always when stopped). That's not to say that all power is gone, but rather that only a limited amount of power is there when I put my foot down. Backing off and then putting my foot back down usually results in normal operation.
I understand the very basics of the crankcase breather system (i.e. why it exists: wiki) but I guess I don't understand well enough to see how a problem could result in these symptoms.
Are we possibly talking about a blockage here?
Last year I got this fixed under warranty but I don't know if I'll have to pay for it this year. Any ideas on how much this will cost?
hmm... well, here's the tech's writeup from last year
CAUSE: FAILED HOSE RRK
REPLACED BREATHER HOSE
TEST DROVE VEHICLE AND VERIFIED THE COMPLAINT. INSPECTED THE ENGINE BREATHER SYSTEM AND FOUND FAULTY CRANKCASE BREATHER HOSE SYSTEM. REMOVED AIR FILTER BOX, TURBO BI PIPE, SECONDARY AIR PUMP AND HOSES. REPLACED THE BREATHER SYSTEM AND INSTALLED ALL PARTS. TEST DROVE AFTER AND VERIFIED THE REPAIRS.
Both last time and this time, I pulled the following code (I even got a CEL a couple weeks ago after it happened once, but it went away):
Several people made different suggestions... but after I took it in and they did the above, I didn't experience the problem for a full 10 months. I was also unable to link it with any environmental factors (like temperature) or even driving style (like it only happening when I've been driving hard... usually, that's when it happens, but I have noticed it once or twice when just driving normally).
I read up on the valve in the past but maybe I don't have it quite straight... how could a stuck purge valve (either open or closed) cause this sort of behavior? The way I thought thing worked, the valve was just a way to purge fuel vapor from the gas tank / charcoal.