I've had to replace four belts in the last two years. They won't stay tight and yesterday by beloved 1997 D90 failed to proceed. My mechanic called just now and said he's found the problem and identified it as a "harmonic balancer" or "crankshaft pulley" problem. He also said the part has been discontinued and the only place he can find one is in Hong Kong through eBay. Wanting to get my boy back on the road, I authorized him to order the part. I checked Rover's North and couldn't find it on their website. So my question to you experts out there, can a serpentine belt cause battery failure/loss of power? It was so dead I couldn't even get my key out of the ignition. I had noticed a strange clicking sound in the week prior to this happening. It almost sounded like the turn signal was on, but it wasn't. Was that telling me I was loosing power? Thanks for any advice you can give as I sit and wait until Feb. 26th when the part should be arriving.