RiggerParish Posted December 30, 2021 Share Posted December 30, 2021 Hello gang, I've been driving around all year with zero issues, just with what I thought was a typical power steering whine. I found the time to investigate with a stethoscope and then by removing the drive belt. With the belt off, the noise is still there. When I place the stethoscope just behind the balancer on the block, that is where the noise seems to be emanating from. Any mechanically inclined members know what is making this buzzing noise? Could it be the harmonic balancer itself or something more sinister inside? Thanks all, RP Link to comment Share on other sites More sharing options...
rogold99 Posted December 31, 2021 Share Posted December 31, 2021 (edited) Maybe the balancer is seperated from the rubber and is now rubbing on the bracket in front of it or the crankshaft senor bracket. Or maybe the timing chain tensioner or guide is bad causing the chain to rub on the timing cover. Edited December 31, 2021 by rogold99 (see edit history) 1 Link to comment Share on other sites More sharing options...
2seater Posted December 31, 2021 Share Posted December 31, 2021 It doesn't sound unusual to me, but hard to gauge the actual volume without electronic capture. The chain damper rides against the back of a segmented chain, the chain runs over sprockets and the oil pump is a gear within a gear type, a gerotor. All would likely produce some sound and while it sounds familiar, I cannot judge what it might be. How many miles?? Link to comment Share on other sites More sharing options...
RiggerParish Posted December 31, 2021 Author Share Posted December 31, 2021 Interesting. You are right, 2seater. With the volume it is hard to tell. Its at its loudest when I start the car from cold and it much quieter when warmed up after a drive. I have a receipt from the previous owner for a new instrument panel so I cannot be sure about the mileage. I would guess that it is over 100k based on its appearance. Link to comment Share on other sites More sharing options...
dship Posted December 31, 2021 Share Posted December 31, 2021 The engine doesn't sound unusual to me either, but I would put on a new belt just 'cause. Also, the IPC only displays mileage, not store it. The vehicle's BCM EEPROM stores mileage along with you car's VIN number. 1 Link to comment Share on other sites More sharing options...
B Jake Moran Posted December 31, 2021 Share Posted December 31, 2021 Harmonic balancer. Link to comment Share on other sites More sharing options...
dship Posted December 31, 2021 Share Posted December 31, 2021 53 minutes ago, B Jake Moran said: Harmonic balancer. Yes, it is a possibility. Link to comment Share on other sites More sharing options...
2seater Posted December 31, 2021 Share Posted December 31, 2021 I thought about this later. How about downloading a decibel app? Lots of them online for free. It isn’t so much for the sound level in this case but it also indicates the frequency of the sound. Maybe can derive a hint from that? Link to comment Share on other sites More sharing options...
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