well well, gotta new noise goin on this evening under the hood.. seems to be a combo chirp/clicking consistent with foot on the pedal.. push pedal get noise.. let off, noise stops almost immediately, altho i think i can hear it faintly just a bit. it is most pronounced between 2-3500rpm or so.. anything higher and it becomes so rapid you dont really hear it as much.. seems to be coming from the drivers side.. any takers? thanks..

Hydraulic tappets... i dunno. Get a screwdriver and put the pointy end where you think the noise is coming from (eg. cam housing) and put the other end to your ear. Rev the engine and move the screwdriver around until you can find it (the noise). Then come back with the results... could be anything, someone else might have an opinion.

 

p.s. waterpump might be a really good place to start. They're pretty cheap too.