HellooMcFly

Hi all, well I had the cel code thrown about a month ago after cold starts so after rebuilding my secondary air pump which was indeed leaking and had a few broken rivets i thought the problem would be solved, but after a couple days the cel is back, so now im trying to find the relay to see what condition it is in, but i don't know where it is! i found a diagram that shows it is in the W-Box but I have no idea where that is any help would be appreciated, thanks!

HellooMcFly

NVM I found the W Box I will post again if this does not resolve the CEL, Thanks

DumpTTruck

I'd try and put 12v directly to the pump connector and see what it sounds like.

HellooMcFly

I still hear the jet sound but no shrieking like i use to hear before i changed the rivets with bolts.

I did not remove the pump when i changed the bolts i just rotated it in place and removed the rivets, is it possible to actually open it and look inside of it?

I tried to separate it while it was still in, but even with all the rivets off it would come apart easily so i didn't see inside.

HellooMcFly

<img src="http://lh5.ggpht.com/_2s9Y1tiYerk/STMk0zeyoVI/AAAAAAAAASA/FFAEg3PDJQg/IMAG0329.jpg">
<img src="http://lh3.ggpht.com/_2s9Y1tiYerk/STMk-__wflI/AAAAAAAAASI/2QA80GFE5P4/s640/IMAG0330.jpg">
<img src="http://lh6.ggpht.com/_2s9Y1tiYerk/STMk_mmgECI/AAAAAAAAASQ/-Y-XMT3alzk/s640/IMAG0332.jpg">
<img src="http://lh4.ggpht.com/_2s9Y1tiYerk/STMlAtHa1jI/AAAAAAAAASY/yEMCIqszkeY/s640/IMAG0333.jpg">

HellooMcFly

3.9% idle value
2.3% part throttel value

joe@vwvortex

not opening. Just went through this. It's probably why the pump failed in the first place.

jhoeppel

They should be +/- 10%... but won't actually throw a CEL until they approach something like +/-25%.

~john

HellooMcFly

do you know of a way to test this part?, i think they cost around $150 correct? thanks.

HellooMcFly

<ul><li><a href="http://www.partsgeek.com/catalog/2001/audi/tt_quattro/air_intake/egr_vacuum_solenoid.html">Secondary AIR Solenoid AKA EGR Vacuum Solenoid</a></li></ul>