Center contact (on a spring) was worn flat to a nub. The remains of it contaminated the dist posts & car almost quit running.
Is there a cause for this that should concern me? Cap was installed 1yr ago by Firestone. Very cheap cap by the way. I have never seen this before.
I pulled the throttle body & cleaned well, put back on & car at least idled, but poorly & only starts when given gas.
Removed again & now looking at how to test the IAC valve or to clean it or replace it
Through help on here I have focused on the IAC valve.
PS: Car should idle 750-800. In drive it idles 400, have to put in D or N to idle at 850