Idle the engine at the normal operating temperature. Command the solenoid to 50 percent using the scan tool. Does the solenoid operate when commanded? -- Go to Step 3. Go to Step 5. 3. Turn OFF the ignition. Disconnect the PCM connector C1 located on the opposite side of the manufacturers logo. Search: Evap Rough Idle.
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Nov 24, 2015. #11. PRAVX II S said: Check my Blog out. FYI the Purge valve makes noise due to the solenoide acuating on & off. The higher the duty cycle the quicker the noise will sound the lower the Duty cycle the slower the nosie. The newer Purge valves from Holden dont make a ticking noise but a more attunated noise.
Part of the EVAP monitor for some Hondas is completed when the engine is idling. Under these conditions, the fuel pump is pulling fuel from the tank. If the purge valve and canister valve are closed, there should be a vacuum in the tank. If the pressure sensor does not see an increase in vacuum pressure, a code will be set. The EVAP canister purge valve and the EVAP vent solenoid are turned on at the nick of time, allowing the engine to suck up a small vacuum on the entire EVAP system. After the requisite vacuum level has been obtained,.