BPA Valve
- Remove BPA valve hose from throttle body. Blow air through port "A". See Fig 1 . Ensure air flows when valve is cold. If air does not flow, replace ISC/BPA valve.
- Measure resistance of Idle Speed Control (ISC) Valve at 2 wire connector of BPA valve. Resistance should be between 5-20 ohms, at normal operating temperature. If not, replace BPA valve.