So I recently (two weeks ago) purchased a 2002 A4 1.8t 56,000 miles. After 6 days CEL light came on (P0411 seconday air incorrect flow)...I'm sure this will co$t me.Now wheneverI back outfrom reverse and begin to turn the wheel i fill a click/grind in the gas pedal. It only does this after making a tight turn from park either drive or reverse (no other times)and I can feel it distinctly in the pedal. Any thoughts for the newbie?

Thanks!

 

There is no cable on the pedal, it's just a adjustable resistor.

I can't for the life of me understand any feedback in the pedal, unless the resister is starting to fail, that should throw a code.

 

check your floor mat, & make sure it's not getting under the pedals, or that something else hasn't become lodged under there.

 

I thought secondary air injection occurs during cold start. Air is pumpedinto the exhaust
manifold while the engine is running rich. This keeps the CAT working properly.

 

i belive secondary air is mostly on cold startups, but I think it can occur from time to time if egt drops below a certain degree

 

it is secondary air injection problem and I would suggest checking if all the hoses are good and clamps

 

Not sure on the air flow, but if this is your first all wheel drive car you might be hearing and or feeling the clutch packs on the axles. As you turn the wheel hard and give the car gas the outter wheel of the turn has totravel further than the inside. As the power is sent to both front wheels the inner clutch pack dumps the power instead of sending it to the wheel which would make the tire jump. The result is a clicking / knocking noise from the front wheels.

 

I have to agree. It sounds like the feeling in the pedal is coming from a cv joint possibly.
In regards to the sec. air fault, there are a couple hoses that do have a tendency to either brake or come loose. The pump is also held together by rivits which sometimes brake and cause that code.