|Originally posted by Saggy:|
When the engine is cold it idles high, from 3-4k rpm.
Once the engine has warmed up... it idles calmly at 1500.
Your engine is idling much too high when it's warm as well.
I suspect you've either got a large vacuum leak (which would include the idle stop screw being messed with)... and/or your tach is reading much too high.
Have you verified the RPM using something other than the dash tach?
[This message has been edited by Patrick (edited 09-07-2021).]