Black_Avant
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Basically my partner owns a 57 plate
Audi A4 2.0l TFSI petrol.
It keeps firing up P0171 fault code
"Bank 1, System too lean at idle"
I've already changed the main pcv valve on the top of the rocker cover. Knowing there is 2 types I've made sure it is defiantly the correct one.
The oil cap has a lot of vacuum and is difficult to remove and also vacuum coming through the dip stick tube when removed which both create the engine to hunt and run crap at idle.
The N80 valve seems to be working as it clicks when the car is running but I still seem to have in my opinion way too much vacuum in the crank case.
What the hell can this be? Is there anything else I could have missed, maybe someone's had the same fault but I'm running out of ideas. Non of the pipes that I can get too seem blocked and when removed the car runs crap so they all seem to be doing what they should.
Any ideas?
Audi A4 2.0l TFSI petrol.
It keeps firing up P0171 fault code
"Bank 1, System too lean at idle"
I've already changed the main pcv valve on the top of the rocker cover. Knowing there is 2 types I've made sure it is defiantly the correct one.
The oil cap has a lot of vacuum and is difficult to remove and also vacuum coming through the dip stick tube when removed which both create the engine to hunt and run crap at idle.
The N80 valve seems to be working as it clicks when the car is running but I still seem to have in my opinion way too much vacuum in the crank case.
What the hell can this be? Is there anything else I could have missed, maybe someone's had the same fault but I'm running out of ideas. Non of the pipes that I can get too seem blocked and when removed the car runs crap so they all seem to be doing what they should.
Any ideas?