The CEL on my 2000 1.8T came on a few weeks ago. Pulled P0411 (Secondary Air Injection Incorrect Upstream Flow Detected ) from the computer. Checked here and found that it could be the vacuum hose, combi-valve($$), and/or the pump($$$).
I replaced the hose, which looked suspect, cleared the code but it came back after a few days. I don't think the pump is coming on any more after a cold start (used to be quite noisy, IIRC). If the pump is not coming on any more, it would mean a dead pump or blown fuse, right?
Some questions:
1) Where is the air pump fuse?
2) If the pump is dead, what are the chances that the combi-valve is dead also?
I will check under the hood once the temperature warms up a bit (been -20C for days). Just preparing myself for the coming assult on my wallet...
Thanks
I replaced the hose, which looked suspect, cleared the code but it came back after a few days. I don't think the pump is coming on any more after a cold start (used to be quite noisy, IIRC). If the pump is not coming on any more, it would mean a dead pump or blown fuse, right?
Some questions:
1) Where is the air pump fuse?
2) If the pump is dead, what are the chances that the combi-valve is dead also?
I will check under the hood once the temperature warms up a bit (been -20C for days). Just preparing myself for the coming assult on my wallet...
Thanks