I find this thread completely amazing,, you have spent a bunch of money just replacing parts, On your own I have to assume ??In an attempt to correct the problem..Its time to call it quits..If you want to get your corrected,, its time to bring it to a qualified repair facility, this might be a very good Independant or a dealer.They should be able to tell you the problem within 1 hours labor time, do what the recommend and then have THEM perform the inspection. If it fails again, that means they were wrong and you dont have to pay for that repair. They will try again,, hopefully, you will get your car to pass for a lot less money then you already have thrown at it, trying to fix it your self or asking people on here for advise, when we cant see the the actual results of the test equiptment ???