Mine did that for about a week...then the belt chirpped one morning, the noise went away and it's been fine eversince. Idle egt's went down and the CEL is on P0404. Been like that for almost 2 years now...
Funny you should bring this up today...My to-do-list for to day is to "fix" the CEL with EFILive...
When you removed did you have any issues How about pcv being in pump. did you remove and plug lines. I have turned off egr system with efi and blocked valve Remains for decoration.