On my 93 HDJ81 it will continue to idle after turning the ignition off. The amount of time it idles after ignition is off depends how long I have been driving. I ASSUMED this was a feature of a JDM VX Limited HDJ81, BUT after discovering an aftermarket remote start system (some can be programmed to perform a cool down idle) had been installed I'm not sure if the cool down idle is because of the aftermarket remote start or if it is a manufacture feature for this vehicle. Any insight would be appreciated.