Inspect Air By-Pass Valve (Abv); Inspect Supercharger Pressure - Toyota MR2 1988 Repair Manual

SC-4 SUPERCHARGER SYSTEM - Supercharger
0016
3. INSPECT AIR BY-PASS VALVE (ABV)
While the engine running, disconnect the ABV vacuum
hose and check that there is normal operating noise in
ABV.
4.
(A/T vehicle)
INSPECT STALL TEST
(See page AT-8)
5. INSPECT SUPERCHARGER PRESSURE
(a) Install SST (turbocharger pressure gauge) between
the VSV and intake manifold with a three way.
SST 09992-00241
(b) (M/T vehicle)
While driving with the engine running at 1,500 rpm
on the fourth gear, fully open the throttle vale and
check the supercharger pressure with the engine rpm
at 2,000 rpm.
Standard pressure:
0.25
kg/cm 2 (3.6 psi,
25
kPa)
(c) (A/T vehicle)
Check the supercharger pressure with a stall test.
Standard pressure: 0.30 kg/cm2 (4.3 psi,
29
kPa)
If the pressure is less than that specified, inspect the
supercharger assembly.
If the pressure is above specification, inspect the ABV
system.