Whining Noise From Water Pump?

[Unicorn Rider]

hey guys,

I saw a post by DaveB, from last September, on a similar noise but mine happens on different situations, so I'm posting it anyway:

I got this, very annoying, whining sound on the first half-hour to an hour after I start the car.

Anytime. Morning, afternoon, on a hot day or not. I took it to Nissan (I live in Japan) and the guys concluded that it is from the water pump.

Starts a few minutes, or even seconds, after I start the engine and it stops if I hit the brakes, put it in neutral and release the breaks (clutch?). It also stops after driving for more than an hour.

So, could it really be some dust/dirt inside the water pump (Nissan's guys idea) or could it be some clutch related stuff (hope not , I love this car)?

By the way, it is a 97'Stagea 25XFour, with 86.000 under its belt. Last complete service was at 55K (yep, I'm delaying it a bit... just got a babe and was kind of short on cash )

[Race__24]

Could be timing belt related also. After I put on a Gates racing belt I had a whine when the car was at idol, turns out some of the paint had come off the belt and stuck to the tensioner - idler bearings. Cleaned them off, loostened the belt a touch(after it had been run in for a reasonable amount of time) and the noise went away.

[Unicorn Rider]

Could be timing belt related also. After I put on a Gates racing belt I had a whine when the car was at idol, turns out some of the paint had come off the belt and stuck to the tensioner - idler bearings. Cleaned them off, loostened the belt a touch(after it had been run in for a reasonable amount of time) and the noise went away.

will take a look, thanks!

Its kind of weird, cause it happens only if I take the foot of the gas... but can be with a gear engaged or on idle (it is AT)... the only thing that makes it stop anytime is accelerating. Also, if I floor-it for a moment ( and put a big smile on my own ugly face), it usually goes away completely... until the next time I start it, after leaving it parked for some hours .

Guess I'll take it to Nissan again and ask them to check the timing belt too.

Anybody has another guess?