Testing Turbocharger Charge Air Pressure With Engine Running (9-3)
- Start engine. Ensure engine is at operating temperature. Install pressure gauge to intake manifold. See Fig 1 . Drive vehicle. Accelerate at Wide Open Throttle (WOT), in 3rd gear, with engine speed at 1500 RPM or more. When engine speed approaches 3000 RPM, depress brake pedal while keeping accelerator panel at WOT. Turbocharger system pressure should be within specification. See TURBOCHARGER PRESSURE (9-3) table.
- If turbocharger pressure is not within specifications adjust basic charging pressure. See ON-VEHICLE ADJUSTMENTS article.
TURBOCHARGER PRESSURE (9-3)
| Engine Type | psi | |
|---|---|---|
| B205L | ||
| A/T | 5.8-9.1 | |
| M/T | 5.8-11.5 | |
| B235R | 6.5-14.5 | |