Aux water pump hose, running to water pump, 'jumps' every 4 seconds, or so. Has done this for several years. Never having had a car with an aux water pump, before, I want to believe this may be abnormal. I changed water pump in 2020 with a Sachs from FCPEURO, noted the jump, but, it wasn't worrisome, then. It is weighing on my mind, having just replaced the upper radiator hose, 12/29/22, and I would like to prevent a future breakage of the hose/s, or somesuch.
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