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has anyone ever experienced any whining noises coming from the accessory drive on a caravan? our '06, if driven at highway speeds for an extended period of time (greater than an hour) develops a noticeable whine on the passengers side. it varies with engine speed, not road speed, and it is very noticable in the cabin, but barely audible outside of the vehicle.

vehicle has 47k miles on it, I replaced the idler pulley last winter about 8k ago thinking that was it. it seemed to go away for a while, but it's back now. it seems to be more pronounced in cold weather. I'm thinking either power steering or water pump, since they're on the rear of the engine.

any help is appreciated.





It needs the power steering resovior replaced and fluid flushed. There is a filter in the resovior and after you drive it for a while it is plugging the filter and starving the pump for fluid,after you shut it off the fluid drains back and cleans the filter back out untill you drive it again.