Turbo Pressure Check
- Ensure intake air hoses are connected. Install hose, "T" fitting and pressure gauge between intake manifold and turbocharging pressure sensor. See Figure and Figure .
- Drive vehicle with engine at 2800 RPM or more with throttle fully open and transaxle 3rd gear (MR2), and note turbo pressure. Turbo pressure should be within specification. See TURBO PRESSURE SPECIFICATIONS table.
- If turbo pressure is less than specification, check intake air and exhaust systems for leaks. If no leaks exist, replace turbocharger. If turbo pressure exceeds specification, check actuator hose for leaks or cracks. If no leaks or cracks exist, replace turbocharger. Remove test equipment.
NOTE:
Ensure turbocharging pressure sensor and vacuum switching valve are okay. For testing procedures, see ENGINE SENSORS & SWITCHES.
TURBO PRESSURE SPECIFICATIONS
| Application | psi (kg/cm2 ) |
|---|---|
| MR2 | 7.1-11.8 (.50-.83) |