APC Guage does not move at all...

It probably means the gauge is disconnected. When you say stuck in the white area, do you mean at the point just between white and yellow?

'opportunity'

Nope...There is a long whit bit then a gap then a really short white bit, then a gap then the yellow starts etc....The pointer is stuck in the gap bit between the whites (even when the engine is turned off it never moves)

There is a pipe that goes from the rear of the gauge to something under the passengers dashboard and it all appears to be connected etc...but it cramped in there so I may have missed something.

Great. 8 valve? I had one of those...

If 'it rocks', the turbo probably IS working, if you floor it. But... The APC gauge is connected with a rubber vacuum hose to a pressure transducer and on to the inlet manifold. If the turbo pressure is too high (in the red zone) the pressure transducer will send a signal to the APC computer and that will switch off the fuel pump or open the solenoid valve to actuate the wastegate.

If you feel that the turbo IS working, then my guess is that the rubber hose from the guage to the pressure transducer is torn or disconnected, and the guage only indicates atmospheric pressure. Then also there will be a vacuum/pressure leak and the pressure transducer may never kick in. You may also hear hissing sounds coming from under the dashboard.

If you disconnect the rubber hose from the inlet manifold and suck/blow on it, the guage sould move. If you can blow/suck right through the hose without much resistance, it is disconnected somewhere. The guage is a very simple thing, so not much can go wrong with it. If you take out the speaker grille in the dashboard (driver side - either left or right) you should be able to see/feel if the hose connection on the back of the APC/ instrument cluster is OK. IIRC the pressure transducer is behind the kickpanel under the dashboard.

See also the turbo category at

That means the gauge is disconnected, or stuck (unlikely).

That pipe comes out through the firewall (bulkhead) and hooks up with the rest of the vacuum tubing near the throttle. You need to locate that end.

With the engine off, that's where it is supposed to be. With the engine accelerating it should move to the left (into the white). On deceleration it should move way to the left (further into the white), both indicating a vacuum situation (manifold pressure below atmospheric). If the turbo comes on, manifold pressure should be above atmospheric and the APC guage should move into the orange.

That would be the pressure transducer/switch. Is it really a pipe, or a rubber hose?

Your passenger side is not my passenger side... let's not confuse things, just name it 'left' or 'right'.

'opportunity'

Thanks for the info and the link.....I now also have to replace my Crank Pulley...Sigh. Well at least that explains the noise that comes from time to time when the engine is cold, at night, and the lights are turned on.

Will track the vacuum hose through the system. There must be a leak somewhere...

Even if the turbo isn't working the guage will still move, it just won't go out of the white area.