Funky Idle solved.

[nickyg]

I've been battling a strange idle for a few months now. It would jump up to a lil over 1k stay for a minute then back down to it's usual a taste over 500. I tried everything.
1.Cleaned the TB
2.Checked the TPS
3.Cleaned and replaced the Idle air valve.
4.I've replaced just about every inch of vacuum line.
5. Ran fuel cleaner and Premium fuel.
Nothing worked.. Until I changed this pvc elbow thing-a-mjig on the top rear of the valve cover...It was plugged up. I couldn't even blow thru it.
Now it purrs like a kitten again.
P.S I tried to clean it but destroyed it taking it off. I guess the plastic got a lil brittle after 17 years.