08.09.2009 - 23:25
Thanks Veith for your reply. Yes, Thorsten gave nice fault finding tips, thats great. So far I did all the "simple" stuff. As an former owner of a Saab 900 with APC (MABC) I should know all the trics. So far, no improvents made.
I found a perfect discriprion of how the AMAL valve should work:
http://forums.audiworld.com/showthread.php?t=1476692
You can see the restriction in the C port. Audi, Saab, Ford, all use a restriction in the C port. This makes sense if one would try to understand the pneumatics. I think Maserati made a mistake here but for now I try to keep it stock.
If one could tap on the knock sensor (with a screwdriver or something) with the key in the "run" position then the AMAL valve should klick. Sadly, I can not see the knocksensor, only the cable going to it.
Well, I read the post you mentioned. Thats why I inspected my valve closely and found it in perfect shape. But then again, it goes wrong somewere in the electrics as I get a lot of boost when bypassing the valve.
Tomorrow I will do some test: Messure the boost pressure with a gauge and see the difference between a connected and disconnected AMAL valve.
Does anybody know the boost pressure with a disconnected valve? Should be around 0,7 bar I think.
I found a perfect discriprion of how the AMAL valve should work:
http://forums.audiworld.com/showthread.php?t=1476692
You can see the restriction in the C port. Audi, Saab, Ford, all use a restriction in the C port. This makes sense if one would try to understand the pneumatics. I think Maserati made a mistake here but for now I try to keep it stock.
If one could tap on the knock sensor (with a screwdriver or something) with the key in the "run" position then the AMAL valve should klick. Sadly, I can not see the knocksensor, only the cable going to it.
Well, I read the post you mentioned. Thats why I inspected my valve closely and found it in perfect shape. But then again, it goes wrong somewere in the electrics as I get a lot of boost when bypassing the valve.
Tomorrow I will do some test: Messure the boost pressure with a gauge and see the difference between a connected and disconnected AMAL valve.
Does anybody know the boost pressure with a disconnected valve? Should be around 0,7 bar I think.