Purge Control Valve Problem
The "Purge Control Solenoid Valve" is the "Purge Control Valve".
idle is a typical symptom of something amiss with the purge control
portion of the evaporative emissions system. It could be the valve
itself is not operating correctly, the evap canister (vapor canister)
may be leaking, or full of raw gas instead of vapor, or maybe even the
purge control valve is getting a faulty signal from the ECU.
soleniod is checked by applying a voltage to it and checking to see if
it closes, or opens (I'm not sure if its un-energized state is normally
open, or normally closed). If the valve is bad it is a no-brainer to
The vapor canister can be removed and checked to see if
it is full of raw gas (not supposed to be), but checking it for leaks is
a bit involved, and probably requires equipmet not normally owned by a
home mechanic. Vapor canister failure on cars
with a lot of
miles is common. Replacement is the fix.
Of course if the ECU is
not sending a purge signal to the valve correctly, figuring out why may
proove difficult, and possibilities could even include a faulty ECU. I
expect this is unlikely though.
It's a $20 part. I first would change pcv valve because it can give same error if it's plugged up. You can always remove it and shake it. It should rattle around real easy. If not, it should be repalced