How to set idle to 1500 temporarily for testing?
I have a 2006 Civic. The A/C service procedure requires running engine at 1500 RPM for 10 minutes with no one in car and simultaneously getting pressure readings under the hood. I assume there is a way to set it to idle at that speed for the test since manually holding it there would be impractical. Or do you just let it run at the normal idle speed (600 +/-) and ignore that part of the procedure? I feel like I am missing something simple.