Much of the interior West is also forecast to see temperatures above August averages. The far eastern and western states will act as bookends to the central warmth with temperatures expected to be a bit cooler-than-average in these areas.
EVAP Canister Purge Valve. When energized, the evaporative canister purge valve allows the fuel vapor to flow from the EVAP canister to the engine. The normally closed valve is pulse width modulated by the PCM in order to precisely control the vapor flow.VAP Vent Valve. The evaporative canister vent valve not only allows the fresh outside air to the EVAP canister during the purge modes, but also allows the diagnostic to pull a vacuum on the fuel tank by closing the vent valve.
Evaporative Emission (EVAP) control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly. This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum.