Chirping noise

[j_shand]

I have a 2000 Esteem. About 1 minute after start-up, I hear a "chirping" noise, which increases when accelerating up to about 60/kmh. After a few minutes of driving, the noise goes away when I press down on the clutch, but resumes when I'm on the gas pedal.

Any thoughts on what this may be?

Thanks

[Isuzuzuki man]

Two things come to my mind, one being serious, one being mostly a nuisance, first, is the tranny full of oil? reason I say that is that it goes away when you push in on the clutch, could be a coincidence.
Second, it could be an idler pulley or tensioner pulley on the acc belt, mine had a chirp like that, it starts when a pulley bearing is going out, that will likely take a while if it ever does anything at all.