I an 2004 Audi A6 Quattro 4.2L. The check engine light is on hooked up my scanner and it said:Secondary air injection bank 1 & 2. Can you help solve this issue?
Country: United StatesMake: Jeep
Welcome to Just Answer!!Yes we can help you out here, am sure the vehicle is still running correctly since here are just secondary air issue . There is a vacuum hose that goes from each comni valve located on the back of the cylinder heads have these been checked yet ??
No. What do you want me to check
Check the vacuum hoses for the secondary air system that go to the comni valves make sure there are no broken vacuum hoses this is the first step that needs to be take because you are leaking air somewhere and the computer is seeing not enough air flow in the system . I hope this helpsFeedback and bonuses are appreciated thank you !!
Do you have a diagram of the valve and where it is located. I forgot to tell you last week I replaced two vaccum diaframs because the plastic arms were broken. These are on the front of the engine and attach to two arms that pivot and they are on the intake. FYI those arms on the intake are very hard to move.
Under the arm you replaced in front of the engine there is some solenoids there for the secondary air make sure these are not unplugged when you replaced the other parts and make sure you have no broken or pinched vacuum hoses there.The valves are locate on the backside of each cylinder head one for each bank .Cant find a good picture for you .Feedback and bonuses are appreciated thank you !!
Everything looks fine there. Are the runners supposed to be really stiff to move?
Yes that is correct .
Are you done. We still need to figure out why the check engine light is on
Are you able to continue helping me or do I need to move on?
Have you checked what I mentioned on the comni valves ?
Yes the vacuum lines are hooked up
In the valves in the back of the cylinder head ?? have you followed the lines to make they are not torn??
Yes, I even used a hand vacuum pump and the lines held vacuum
Ok thats good is your scan tool able to do a output test to make sure the secondary air pump is working ??