Date: Tue, 11 May 2004 12:30:56 -0600 From: "Zon" <johnnospamy-to-group.please> Subject: Re: Where to buy BPC-valve / APC -valve?
"Fred W." <Fred.Willsnospampam myrealbox.com> wrote in message news:_fmdnT_Gl66kiTzdRVn-ggnospamphia.com... > > > There are some tests you can do to help determine if this is your problem > before you dish out the moolah for a new one. Check out the diagnostic info > here. It does not apply directly to your model year car, but the basics are > pretty much the same: > http://68.18.129.154/turbo_folder/baseboostdia.htm OK, thanks. I haven't checked knock sensor (do I have one? where?) nor pressure sensor. I guess I have to try to check those before I buy new BPC-valve. I haven't checked cruise boost limiting switch neither. > You can also try unplugging the electrical connection to the APC valve. It > should run at base boost. Note that level on the gauge. Is that where it > runs when the valve is plugged in? I have been warned that this may cause check-engine light to come up. Is that true? I haven't done it for this one reason. > Next unplug the hose labeled W. Be very careful when you drive it. It > should run like a bat outta' hell and boost up to the max and then the > overpressure safety switch will shut down the ignition. That's exactly what happens, and the reason that made me think it is BPC valve that is shot. > If the above two steps check out, your turbo is making good pressure and > your wastegate is functional. You would have to have some sort of control > problem to the APC valve or a bad APC. Ok, I guess I have to try to diagnose this pressure transducer. I just hope I knew where the knock sensor is... BR :Z
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