Idle problems after throttle body cleaning

[Dave2001S]

Yes, its called the throttle body seal gasket. It has a small tab on one side. And I agree, omitting it could explain a vacuum leak. However, I just simply couldn't get the intake tube back on with that thing in place. I wonder, should this gasket fit snugly onto the slot of the throttle body, sorta like a rubber band? The one I ordered fits loosely and therefore gets tweaked and pushed out of the way when I slide the air intake tube back.

[Dave2001S]

I meant to mention also, I have looked at several videos on YouTube showing the process of removing and replacing the throttle body, and in no case have I noticed one of those gasket seals in-place. I remain mystified as to the functionality of this gasket, although I would understand if it fit better and allowed the air intake tube to reattach.

[Aphotodog]

I never found an 'O' ring as you described when dismantling mine, but I'm like the 4th owner. However, mine is running well now but the CEL has popped on again. I'm gonna have the code diagnosed again. If it is O2 sensor related again, I'm gonna pull them and soak them overnight in gas, dry them out and reinstall. If there was an O ring involved in mine when new, it's not in the game anymore.

[Dave2001S]

Thanks, appreciate knowing that. Odd that our problem seems identical, and I'm not getting the CEL whereas you are.

[Dave2001S]

A bit of a delayed follow-up here but I hope you can help me. I'm still having persistent stalling problems with my boxster. I am wondering about the idle control valve, but I am a bit confused. Does the throttle body on my 2001S even have one of those? Or is it electronic?