High Frequency Test
WARNING: This page is about a different car, the 1997 GMC Savana, 1997 Chevrolet Chevy Van, and 1997 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
- Engine is running.
- Engine run time is at least 0.4 second.
- System voltage is at least 8 volts.
- Throttle position is less than 89.8 percent.
- MAF sensor is at least 10.44 Hz.
- Conditions are present for zero seconds.