2004 V8 US model
What are the most likely suspects?
New VW Gas Cap
Small vacuum hoses under hood look good. No cracks and tight fit on all ends I can easily get to.
Has not had VW Gas Tank Recall done, but did get new fuel pumps a couple of years back.
(I didn't do them, so can't say how good a job sealing the system)
I have read a lot about the N80 purge valve on other Audi/VW systems. Is this the valve at the back-top on the left side of the intake?
If so, can I run known good a hose from it to a generic vacuum canister as a test? (Are there sensors or valves in the vacuum canisters that I need to be concerned with?
Can I close off the vacuum line running back to the tank as a test?
Where does it measure the tank vacuum to trip the error?
I have also on occasion received a P0442/16826 code. (This was the code with the old gas cap)
Does this help track down the problem.
What are the most likely suspects?
New VW Gas Cap
Small vacuum hoses under hood look good. No cracks and tight fit on all ends I can easily get to.
Has not had VW Gas Tank Recall done, but did get new fuel pumps a couple of years back.
(I didn't do them, so can't say how good a job sealing the system)
I have read a lot about the N80 purge valve on other Audi/VW systems. Is this the valve at the back-top on the left side of the intake?
If so, can I run known good a hose from it to a generic vacuum canister as a test? (Are there sensors or valves in the vacuum canisters that I need to be concerned with?
Can I close off the vacuum line running back to the tank as a test?
Where does it measure the tank vacuum to trip the error?
I have also on occasion received a P0442/16826 code. (This was the code with the old gas cap)
Does this help track down the problem.
