Turbo not boosting 100% [Archive] - SaabCentral Forums

: Turbo not boosting 100%


jrs58
18-08-10, 11:34 AM
I have a 1992 9000CS turbo. Turbo boosts fine until the gauge goes about halfway. Then it stops. It still runs fine. Just stops boosting. Could that be the plugs? APC solenid? DI ignition?

Superaero
19-08-10, 08:05 PM
Probably just running at base boost. The APC solenoid (BPC on Trionic equipped cars, APC is the older pre-Trionic system) is not functioning but that may not be the solenoid itself. Check that the electrical connector to the BPC is secure and the vacuum/pressure hoses all intact.

Fullthrottle95
22-08-10, 04:02 PM
Probably just running at base boost. The APC solenoid (BPC on Trionic equipped cars, APC is the older pre-Trionic system) is not functioning but that may not be the solenoid itself. Check that the electrical connector to the BPC is secure and the vacuum/pressure hoses all intact.


Is this the part that all of the vacuum lines run into right behind the fans? My car will boost really well (needle goes into the red) up until it reaches a bit above mid temp and then it stops boosting like that. Could that be a sign of that part going bad?