Humming Sound?
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Car: 1989 Formula Firebird
Engine: 305 TPI
Transmission: 5-speed
Axle/Gears: 3:45
Humming Sound?
I have a 1987 firebird 5-speed v6 recently started making a humming noise that seems to get louder the faster I go. Just replaced both axle seals and axle bearings and new back brakes. The noise is still there. The car drives fine with no problems just the humming sound. Anyone have any ideas of what this could be?
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Car: 1991 Camaro RS
Engine: BBC 509 Merlin ii 9.6:1 pump gas
Transmission: ATI pro th350 sfi case. TSI 5500 st
Axle/Gears: Strange S60 4:10s
Re: Humming Sound?
wheres it humming from. Front or rear?
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Car: 1989 Formula Firebird
Engine: 305 TPI
Transmission: 5-speed
Axle/Gears: 3:45
Re: Humming Sound?
At first I thought is was coming from the rear but its hard to tell, could be the front.
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Re: Humming Sound?
Rear-- Check // change differential gear lube.
Dash area-- Speedo cable may need a bit of lube ( IDK what to use, if that's where its coming from, ** may need** have to remove gauge panel. )
Some one with experience could point you how if its the Speedo cable.
Dash area-- Speedo cable may need a bit of lube ( IDK what to use, if that's where its coming from, ** may need** have to remove gauge panel. )
Some one with experience could point you how if its the Speedo cable.
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Humming Sound?
check the rear diff to be sure its got gear oil in it.
check the transission for fluid as well
can also be a u joint on the drive shaft going bad
does it only make noise when u are pressing or off the clutch peddle, if so it could be the throw out bearing
if its in the front u could have an accesory pully bearing starting to go and or u could have a wheel bearing starting to go bad
check the transission for fluid as well
can also be a u joint on the drive shaft going bad
does it only make noise when u are pressing or off the clutch peddle, if so it could be the throw out bearing
if its in the front u could have an accesory pully bearing starting to go and or u could have a wheel bearing starting to go bad
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Car: 1989 Formula Firebird
Engine: 305 TPI
Transmission: 5-speed
Axle/Gears: 3:45
Re: Humming Sound?
thanks for all the advice! differential fluid was just changed, I was thinking it could be a wheel bearing on the front. if it is a wheel bearing is it safe to drive and how long can it be driven like this? thanks
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Humming Sound?
if its a wheel bearing it is not safe to drive, eventually the wheel bearing will seize up and lock up the tire or worse it may come off.
if the bearing does seize it usually welds itself to the spindle ruining it. so its alot cheaper to replace it before it fails
iirc the inner/outer wheel bearings set is around 20 bucks
if the bearing does seize it usually welds itself to the spindle ruining it. so its alot cheaper to replace it before it fails
iirc the inner/outer wheel bearings set is around 20 bucks
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Car: 1989 Formula Firebird
Engine: 305 TPI
Transmission: 5-speed
Axle/Gears: 3:45
Re: Humming Sound?
Turns out it was bad wheel bearings in the front both sides were bad. Thanks everyone for the advice!
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