See pic, this car now at 188K looks the same. I inspect every Fall maintenance. If you see oil there, it is caused by the PCV not working right, or it is not OE part. The plunger is always open when not in a running engine. This IAC only passes filtered clean air. However is the PCV is not doing it's job, oil vapor can come back up the fresh air hose to the accordion. The accordion should also be clean and dry.Hi Jeff K (and kekaye56),
Sorry for the late post, but I just got back to this a couple days ago. As you suggested, I pulled off the IAC. It took a couple sprays, some soaking for a couple minutes, and some light brushing with soft solder flux brush (not used btw) to get the carbon/etc off.
Btw, I saw a "auto repair challenged" person on Youtube fill that plunger chamber up with carb cleaner and let is soak "for a while". I bet that solenoid is working much better (not) with carb cleaning inside of it now. Anyway . . .
My plunger is not fully seated, as seen here:
View attachment 215118
If you look closely under the plunger in the top chamber (as seen above), under the seal is a small silver/grey area in the center. That silver spot is actually the plunger shaft we see, because the seal is not yet fully seated.
We have not yet had a shopping day where we make multiple stops, so I don't know if the simple carb cleaner cleaning has fixed the sputtering hard-hot-start issue. Does anyone know if I'm supposed to see shaft under there, or is that plunger supposed to be seated in it's tapered seat?
Thanks again for sharing your experience.
Regards . . .
P.S. Nice that we can insert pics directly now with this new forum software : )
106.2 KB Views: 12