Overdrive (formerly Electromatic clutch) freewheeling?

Posted by Icarus On 2022/10/20 15:21:26

Hello! So, today my cousin took the Packard (48 super eight LWB) for its first test drive. Happy to say it made it home safely, but there was some weirdness! Apparently, when they were trying to engine brake down a hill, the engine freewheeled instead of braking. The car has an electromatic clutch, and I'm wondering if this is normal behavior, or a failure state? Please and thanks in advance!

Edit note: the problem has been localized to the overdrive module, which is freewheeling but not engaging the actual overdrive gear itself.