Is this a water pump problem? on 2000 Chevrolet Venture

My minivan started a rattling noise under the hood on Feb. 13.I haven't driven it but twice since and it is still making the noise. I also smelled something like rubber burning at first, but not the second two times that I drove it. I don't see any leaks under my van.

Asked by for the 2000 Chevrolet Venture
also, the belt tensioner is a common failure with these engines. have it checked out soon before it lets you down.

2 more answers
Check with belt(s) off for any pulley alignment problems and seizing. Tensioner sounds like culprit.
sounds like your belt is out of alignment due to a pulley failing , look under the hood with the engine running the belt should be straight .