Date: Tue, 06 Aug 2002 08:47:35 -0400
From: KeithG <noonenopsamspring.com>
Subject: Re: 94 9000 Aero boost problems


I do not think that the later style APC solenoid clicks like the early one.Boost oscillation under load may be the APC, Is it high frequency or low frequency oscillation? It could also be the DI cassette. It could be plugs. Are you using the proper NGK plugs? KeithG scaredofthedark wrote: > I'm hoping someone can give me some difinitive information here. > > I've got a 94 9000 Aero 5 spd. Under load the boost is oscillating in and > out of the red. I'm leaning toward a faulty APC Valve/Soleniod, but would > like to get some more info before I drop $200 on one. > > I was told that I can check the valve by checking continuity between the > center pin on the valve to either of the outside pins, and that I should > obtain a reading of 350 Ohms. Is this accurate? If so that's where the > problem lies since I am reading 3 Ohms. > > Should the valve click by setting the ingnition to run? > > If I wanted to funx check the valve with power applied, is the 12V on the > center and GND on the outsides or vice versa? > > Thanx in advance, > Chris > >

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