Idle revving from 1k to 2k rpm at startup

[jb92563]

My idle is also acting up after my AOS incident last week.

It has not been right since then even though I have a new AOS installed.

I get the P0507 code which says its the Idle Air Control located on the Throttle body.

So your fix was to replace it?

I will try cleaning my TB first and if that does not help then it could be a vacuum leak or the Idle Air Control.

I'm wondering what is the best way to check for a vacuum leak?

Any tricks, soap bubbles, smoke, stethoscope or something like that.

I use a mechanics stethoscope and you would be amazed at what you can hear with it. Noisy bearings, etc and is a great way to diagnose and frequently dismiss non-issues. Just not so good on air leaks as the sensor rod is solid for conducting heavier lower amplitude vibrations rather than sound waves of hissing air.

That mechanic nicely identified himself as someone to avoid at all costs as his intentions are clearly not in the owners best interests.