Engine will not stay running after replacing IAC

It is possible that something was not connected correctly but the more likely issue is the IAC was damaged and now requires replacement.

Not sure how you cleaned it but here is a guide that will show how to clean these:

https://www.2carpros.com/articles/idle-air-control-valve-service

If you cleaned the IAT as well then that may be damaged as they are normally not too happy with being cleaned using harsh chemicals. However, this is not likely to cause a start and stall event. That is more likely the IAC.

I am attaching the process below on how to replace this which is what I would do and then retest the operation. One way to help confirm this is to see if you can keep the engine running by opening the throttle but that is not always definitive because it is not the easiest thing to do.

However, I have replaced enough of these IACs over the years to know that this is the most likely cause of this at this point.

Let us know what you find with this, and we can go from there. Thanks

Could be both. It may have been beginning to fail and the cleaning pushed it over the edge or if you cleaned it with harsh chemicals, it could have damaged it.

Either way, cleaning them is worth the try but most of them end up needing to be replaced as they normally don't present an issue until they are too far gone. So, the cleaning is more of a maintenance item and not a correction when they fail.