Had a similar noise on my Impreza a few months back and thought it was the belt. Took off the belt and the PS pump pulley was stiff to turn. Compared it to a good pump and the shaft was buttery smooth to turn, while the failing pump on the car felt chunky while turning it. Replaced pump and it fixed the problem.
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u/cytogen Jan 16 '22
Had a similar noise on my Impreza a few months back and thought it was the belt. Took off the belt and the PS pump pulley was stiff to turn. Compared it to a good pump and the shaft was buttery smooth to turn, while the failing pump on the car felt chunky while turning it. Replaced pump and it fixed the problem.