Rpms not dropping

[RandallNeighbour]

The cracked oil filler tube is a common problem... And a pain to change out too.

I hope you figure out your problem. Sounds like you've discovered others along the way...

[uladzislau]

Originally Posted by RandallNeighbour

The cracked oil filler tube is a common problem... And a pain to change out too.

I hope you figure out your problem. Sounds like you've discovered others along the way...

I've got the new tube and tools for taking the spring loaded clamps. I read that it's PITA to change but will have to anyway. Better to find and fix it sooner than later ;-). Thanks for follow up and all the suggestions guys! The new idle control valve is on its way, I'll install it hopefully tomorrow or day after and will let you know.

[uladzislau]

Well it's not the idle control valve either. Dropped a new one yesterday and today I've got the same RPM issue on my way to work. This was my best bet. So the last thing to try is the AOS I guess. And the oil filling tube which is cracked in my case. Will keep working...

[uladzislau]

No I don't think this is AOS. AOS is connected after the throttle plate and bypass MAF. When I was logging MAF reading while driving I have seen that when the RPM get stuck the MAF sensor reports airflow (and the throttle position is closed at the same time). If somehow air would be leaking through AOS I should not see any MAF readings too. The ICV was my best bet but with the new one doing the same thing I don't know where to look next...