Hi all. My car is fine for about half hour then it makes a growl sound when revving only. Which drives me mad as I'm sure everyone I'm driving past can hear the noise too. I have a slight water loss and can see the red coolant drips from under the pump so I'll be doing that. Belt. Tensioners. What I'd like to know is do I have 2 separate problems which ain't related to the pump and tensioners the noise is deff drivers side where the belts are. Would a worn tensioner pulley make a growl sound if the bearings are knackered. Any info would be great. Cheers