2001 Grand Cherokee Fuel Pump

Old 05-12-14, 06:57 PM
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2001 Grand Cherokee Fuel Pump

I just change the fuel pump and filter. But the new one makes a loud buzzing.
I returned the new fuel pump to the store and they gave me another, but the problem continues. When I put the old fuel pump the buzzing disappear. I have no idea. Can somebody help me?
Old 05-12-14, 07:15 PM
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After market pump from a parts store? May have slight differences from stock.

My SUV pump would sometimes be audible (buzz or hum) but it wasn't an issue once moving on the road.
Old 05-12-14, 07:41 PM
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some electric pumps need a break in period berfore they quiet down. why did you replace it if your old worked?
Old 05-12-14, 07:45 PM
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Your old pump didn't work, right? The new one is. Most all aftermarkets are a little louder initially. I have a racing pump on my Cummins diesel. You "know" it is working

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