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Welcome to JustAnswer!!! My name is*****'m a 19 Yr Jeep dealership technician and I will be helping you with your question today...
If the new pump is making a whining noise then I would get it warrantied for a new pump. If it's an aftermarket pump I would suggest getting a OEM pump to eliminate any issues with aftermarket low quality pumps.. There is nothing else in the tank that would make that noise besides a bad pump.
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