Hi,
I assume you mean you have replaced the serpentine drive belt before? When your belt comes off, it is not operating your water pump and alternator or power steering pump, giving you the overheat and dead battery. Shouldnt make power steering fluid leak though. Does the power steering fluid leak all the time, or just when the belt comes off? If it leaks all the time from the pump area, you could have a bad seal and bearing in the pump causing the pulley to wobble and that makes the belt walk off. First, locate the belt routing diagram on the engine cowl (front of vehicle under the hood) or make a drawing of how the belt is routed for re-assembly use. Loosen belt tension at tensioner and take belt loose from a pulley that is easily accessed. Use your hands to wiggle all your pulleys and feel for excessive play in any of them or the components themselves. (water pump, power steering pump,A/C compressor and alternator.) If component play, you could have loose bolts causing wobble. If pulley play, could be bad bearing in component which would need replaced. Pay special attention to excess movement in the tensioner pulley itself. Also visually check for sideways alignment of pulleys. If pulleys are not aligned correctly, it will make the belt walk off also. That is usually a bracket misaligned or bolt holes in bracket worn out. If all checks good, I would suspect a worn out belt or belt tensioner that is not holding enough / proper tesion on belt allowing it to walk off. It will take you about an hour to check these things, repair costs depend on what you discover as a potential problem,as components can be costly.
Let us know what you find......Thanks, Mike
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