No it didnt fluctuate it was steady was talking about idle. So i need to have it plugged in too? or just bolted to the engine?
Actually, you can test for short without the IACV installed. Touch one meter probe to one plug terminal and the other to the metal surface of the IACV. Then do the same test on the other plug terminal. If you read 100 Ohms resistance or less, then there is a short.
If the recent replacement IACV does not have a short, then once again put your finger over the FITV or IACV port in the throttle body to see whether blocking the port affects the idle speed. Post the results. These tests are done with the engine fully warmed up when the idle problem is happening.
When you installed the replacement IACV, did you inspect the rubber gasket? Is it possible that the gasket is bad and leaking?
Have you ever removed the throttle body or intake manifold? Have you carefully checked for leaking vacuum hoses?