Quote Originally Posted by Fordubishi View Post
worst comes to worse you "might" have to machine the crank and put new bearings in. If the did a quick and dirty rebuild then they only polished the crank and went back to the original size bearings. This will also cause low oil pressure as the oil is leaking between the crank and bearings, which will not push enough oil up to the lifters and cam's at idle. As Lush said try the pressure switch first. The engine should be under warrenty with only 9K on it. They should cover it for 1-2 years and 20K unless they are a fly by night operation.I have all my machining done out of house but even I cover my rebuilds for a year.
Which I already know all of that. But I mic'd the new crank myself, it was with in spec for standard sized bearings, and it was already polished. Even then, motor runs absolutely fine, no knocks. EVEN if the crank was under spec, and standard sized bearings were used, the oil light would have started coming on a lot sooner, the low pressure symptoms didn't start until after I diagnosed the rear seal was leaking oil.