water pump noise or other
before the water pump was replaced there were few occasions this situation would occur (6 month - 10,000 miles)
maybe about 10 times and would say 4/10 was within a month less to its replacement
situation: would start car, drive some way (10-300 miles) without any bad noise , then come to a stop then a whirring sound would appear on the passenger right side
and then continue whirring upon acceleration with a slight knock sometimes at certain shift points , above 30mph sound not audible .
if quickly accelerated the knock would not appear, just the whirring.
would turn car off , wait a couple minutes, start car and it would go away
got the water pump(acdelco oem) replaced and after one thousand miles the sound had re-appeared after one hour of good driving.
then took it for a half hour drive without any bad noise then once again come to a stop and the whirring sound reappeared, whirring but also at one point a sound kinda rubbing grinding, -
came home , parked car, engine on, dont hear it
coolan level in reservoir is same, a slight wetness near thermostat housing , no overheating , dunno if its droping at the weep
steering wheel moves freely, no screeching
have i just gotten bad bearings on this new water pump ?
could it be some thing else that occurs inconsistent and makes a whirring noise and a slight knock at different points in acceleration and not audible at around 30mph?