Here's what I did this morning.
1. Checked coolant and topped off
2. Checked the ecu fuse was good.
3. Started engine, idle still high so
I disconnected PVC line checked for vacuum, was good
Disconnected fuel pressure regulator line, vac good there
Checked booster vacuum, good
visually checked the vacuum lines on Purge valve solenoid, all connections good, and disconnected power to the valve.
4. Shut engine off. At this time the only connector not connected in the engine compartment was the purge valve solenoid.
5. Started engine, still high, connected solenoid valve plug, let run for about 1 minute, then shut off engine.
6. Restarted engine and idle returned to normal. Run A/C, Shifted transmission from park through selection ranges, still normal idle, back shift back to park, and idle still normal.
My synopsis is that when I had the bad PCV line to the solenoid, after a bit of time the solenoid stuck in the open position because of vacuum failure (would that be a correct guess?) By resetting the solenoid, the operation of the part went back to normal operations. What I thought was a vacuum leak was not, I wanted to find out if there was an issue of vacuum and the Evap service line did not give me any indication of a leak there either even with the engine running. I will let you know if anything else happens, but for now all seems well.
Monday, October 1st, 2012 AT 12:31 PM