Hello everyone. I have a 1991 mustang gt that had several idle problems. Today I took it for a drive around 20 blocks. But I had the idle control valve disconnect. And the idle was good around 900 or 1000 .also it did not turned off on stop light also I pushed it hard that you can listen to the back tires peel out . On park the idle is around 1000 rpm.can eny one tell me way it ran better with the idle control valve disconnect. Thanks.