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  View original topic: Whine after new oil pump ?
Schuylersister Sat Aug 20, 2022 8:02 am

Well I know it’s hard to discern a noise without hearing it but I could use some insights. My 1990 2.1 WBX had the alternator and oil pump replaced recently. I notice a high whine when I drive it that increases with RPMs. It doesn’t sound like a belt. I know the exhaust was removed to do the oil pump with the engine in place. It seems to run fine. Could it be an exhaust sound? Should I be able to hear the oil pump? The V belt was too tight for sure and now I’m having the water pump replaced. Could it be the water pump? Thanks!

DanHoug Sat Aug 20, 2022 8:12 am

your alternator belt is still too tight!!

Schuylersister Sat Aug 20, 2022 8:59 am

Really! Still too tight? It's a high whine not a squeal? Could that sound be from the water pump or do you think it's the belt itself ? Guess I'll know a lot more after the water pump and belts are replaced next week. Apparently the wrong size belt was used for the alternator. Too small 1075 not 1100. Jesh!

DanHoug Sat Aug 20, 2022 12:09 pm

Schuylersister wrote: Really! Still too tight? It's a high whine not a squeal? Could that sound be from the water pump or do you think it's the belt itself ? Guess I'll know a lot more after the water pump and belts are replaced next week. Apparently the wrong size belt was used for the alternator. Too small 1075 not 1100. Jesh!

for the 5 minutes it takes to loosen the belt, i'd just try it. sounds like maybe you have a mechanic work on your van but this is a very useful DIY task that can save you some frustration. and most mechanics don't know squat about V belts nor how tight/loose they should be. everything they work on is serpentine.



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