Fuel System Operation: Notes

This vehicles primary fuel source is compressed natural gas (CNG). The vehicle will only switch-over to gasoline operation if one of the following conditions is present:

• The fuel tank pressure sensor indicates CNG fuel pressure is below 1,379 kPa (200 psi).
• Every 100th start the vehicle will start and run briefly on gasoline. After this, a switch-over to CNG will occur during the first decel condition.
• A system fault is detected by the PCM.
• The engine cranks for 8 seconds and fails to start on CNG.