Just came back from my garage. I did a small movie for you! I had to wake up the Porsche from hibernation but I was happy to see it!!! The camera was really close from the engine, may be the noise is a bit louder but listen to the movement of the valve.....


http://www.youtube.com/watch?v=yt_6E...ature=youtu.be

 

I also found a brand new valve in my stock (yes I am mental and suffer from hypochondria after becoming member of 6speed ) and I took some pictures for you so you can see the clip that hold it to the air pump mounting bracket....Lift up and it should come out!

 

This is fantastic! Thousand thanks for posting this. Without a reference point it would have been very difficult for me to figure out what's going on...

Mine sounds 100% different from that! So, this is a very good clue for me to hunt down from...

Given the cost, I'm going to just order the valve, install and go from there...

I'm new around these parts, and I'm incredible impressed and grateful for the help from the community. Thank you.

I look forward to getting my dream car running flawlessly.

 

Welcome, keep us inform of your progression!

 

I will update as I progress along. Should have the part next Wednesday.

Btw, does anyone here have a good explanation on how this particular valve fits into the whole operation of the engine? I found some great reading on how the N75 works to regulate the wastegate actuation, but I couldn't figure out what this particular valve is actually regulating.

 

UPDATE:

I've swapped the change over valve and could immediately tell that it was now sounding different (during Durametric actuation, the new valve is now "clicking" as it is in the video above--previously it hardly made a sound.) I don't have enough miles since resetting the codes to know if that's solved it for good. Will update again with more miles.

 

Fingers crossed!!!

 

UPDATE:
It's now been a two tanks of gas, and no new codes have been thrown. So from best I can tell, replacing the valve discussed above appears to have resolved the issue.

Thanks again for all the help. I hope my experience will give hints for others' troubleshooting in the future.

 

Another happy ending, Congratulations!!!

 

I just got these Cells. Thanks for the great information in this thread fellas.

 

Just wanted to reiterate much of what I have read about the CEL codes 0492 and 0491; just spent about $3k on this problem, my 2001 TT with 26k miles; first the Secondary Air pump not working, that was a $1200 fix, then the secondary air valve was stuck and the hose was pinched, fixed that, and finally one of the diverter valves not working, replaced both.
Also had to repair the display panel (nothing to do with CEL problem)

 

damn that seems like alot to me. a SAI pump is 300 bones, the valve is 20 is 20 and diverter valves are 300 or less for fancy ones.

 

the Bosch Sec Air Pump cost me $750 + 500 labor; the diverter valves I replaced both total cost $480 + labor

 

I replaced one (sia) with this bosch part https://goo.gl/o9zfWB and it took me about 45 minutes with simple hand tools. It just seems like alot to me, but i guess prices are all over the place for parts and labor these days.

 

Hey guys,

So I'm having a similar issue with my SAI and O2 being in not ready status.
A little background about my car.
2006 Boxster S 3.2L
FVD Exhaust system
GMS Headers with 200 cell cats - has all 4 O2 sensors attached.
996 throttle body and distribution hose
ECU Tuning Group tune.

I had the car up in BC Canada since 2009 (although it is a US car) and had no problems passing the sniffer and obdII tests - both before and after all the mods except for the ECU tune. This is the first time I am taking the test with the tune on the car.
I went to get my emissions testing done last week in Texas and failed due to the 2 systems being in not-ready status. I figured it might have to do with the cat delete configured in the tune. I sent my ECU back to ETG in California and had them re-flash my ECU in order to re-enable the O2 sensors.
I cleared all codes and figured I would start fresh. I drove the car about 50 miles and attempted to follow the drive cycle mentioned in other posts but it was really tough with the roads out here. Anyway, everything is in ready status now except for the Evap System (Which I know will turn on after some more driving), the SAI, and the O2 sensor. I can manually start the SAI using the Durametric system so I'm fairly positive the system is not bad; however, I'm not sure that I"m hearing the SAI start up when I cold start the engine.
I've attached a picture of the ready-status' from my DashCommand IOS app as well as another screen showing N/A for catalysts and O2 sensor - which i don't get. I would expect to see live results there.
I have also included a short video of a test I ran with the durametric system. If anyone can help interpret the video results and/or suggest I run any other tests, I would appreciate that.
Thanks!