Help!!! Pressure washing fail?

[e30runner]

So I recently changed my oil pan gasket because it was leaking about half a quart every two weeks. After that I tested the car and it ran great with no more leaks so I got out the pressure washer to clean the bottom of the car and the engine as well. After the pressure wash I got a funny noise. When the car is cold (first3-5 min) every time you rev the engine, as the rpms fall from about 2k down to idle the engine gets a wuring(wuuurrrrr) sound. What could it be?

[Mr. Tasty]

wet starter? Idk.

[e30runner]

doesnt the starter disengage once its started? plus its only on a cold engine, if im running errands and constantly shutting it off and on then its fine.

[blocke]

Belts?

[Quinthirty]

Alternator bearing or probably your aircon compressor clutch.

[Mr. Tasty]

yea, I wasn't really thinking. Obviously something rpm related. Some sort of belt/pulley/bearing. Or maybe transmission.

[e30runner]

I don't know if this makes a difference or not but the sound remains the same with the a/c on or off.

[e30runner]

Ok so I tried listening in on the belts, alternator, a/c and power steering and the sound does not seem to be coming from any of them unless I am mistaken. I am at a loss now. Anybody got any tips or located near Sacramento, CA?

[Quinthirty]

If its the same sound with A/C on or off, then I'd go for the alternator bearings, or even the power steering pump. Check the P/S pump sound if you turn the wheel all the way to the left or right while at idle and listen if the sound changes.

[e30runner]

Checked it, the sound doesnt change upon steering left or right. The sound is only there on a cold start around 1500 rpms.

[2l2ltq]

Could be a bad idler pulley or something of that nature. Best bet would be to break out a pry bar and start listening to different points on the engine to narrow down where it is coming from.