external oil pump on the 3.8L March 09, 2005, 11:14:44 PM Ok,, im looking for someone how knows about the proportioning valve in the timing cover on the 3.8L v6 and its likelyhood of sticking or getting in a bind.it is held in place by a freeze plug floowed by a spring and a proportioning valve that regulates oil flow from the external pump gears.who has had problems with this device sticking? Quote Selected