HELP ME!!, whining after water pump install Options

[MrNate]

Hey Everyone, I am new here but not new to celicas. I recently (a month ago) bought my celica from my friend. He had it overhauled 5K miles ago and it runs great.

My issue is this: the engine builder did not replace the water pump during the engine build, why? who knows. If you ask me that was stupid not to do. Anyway, I drove the car about 1K miles since I bought it and it runs excellent. Then I noticed the weep hole was wet with coolant so water pump needed replacement.

This is when I found out that the mechanic never replaced it because it was still the factory one! I also noticed that the t-belt was angled a bit from the failed water pump but it had no apparent damage and I checked it quite thoroughly (new belt).

Well I proceeded with the water pump replacement and it's all assembled. I checked the timing and it's perfect. Well the issue is this: the engine whines now and it didn't before. It kinda sounds like a weak supercharger. When I rev the engine the whine increases so it's timed with the t-belt I think. I then backed off the tension of the belt just a teeny little bit, the whine stopped but now it raps against the timing belt cover. I then tightened it again to make it stop rapping the t-belt cover. It whines again.

What is going on???? It runs great, I have full power, quick start up, no pinging under load, it runs perfect, just whines like a bastard.

[MrNate]

Do you know if the idler bearings are something they would replace for a rebuild automatically or is it more by owner choice?

Makes sense why the water pump is lighter then.

Lee's pretty damn close to the NY border so I'm way out from the east coast but my buddy lives in NH so I am there sometimes. You guys ever meet up and just hang out?

That's a nice Celica man, you rally it or something?? Looks all hopped up too. You pushing forced induction though it?