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drivetrain noise, please help!
Posted: Mon Nov 28, 2016 2:29 am
by 93wagonship
hi guys,
my 1993 BF wagon 4wd have developed an annoying drivetrain noise most audible from 60 mph (100 km/h) and up.
the noise appears to come from the transmission and is not related to RPM
in the video below it is possible to hear (like a saw working in the wood shop)
when the clutch pedal is depressed, the noise becomes worst (did it several times by the end of the video - loud noise followed by clutch pedal squeaks)
the noise began soon after a head gasket and clutch job, but the mechanic say it's unrelated and wants to charge another $700 to open the transmission and inspect the bearings
please help!
cheers
https://youtu.be/_LuoOZz4oi8
Re: drivetrain noise, please help!
Posted: Mon Nov 28, 2016 2:41 am
by 93wagonship
just in case: what else is wrong with the car? not much
engine is running superb
got a rear rubber bushing 20251AA000 in need for replacement for some time now
axle seals leaking, but keep checking transmission/centre diff fluid
everything else is Ok
Re: drivetrain noise, please help!
Posted: Mon Nov 28, 2016 3:59 am
by rallyak
It sounds like the throw out bearing, was it replaced when the clutch was replaced?
(Edit)
I listened to it again and it sounds deeper than that, it is speed dependent like a shaft bearing, or diff bearing.
Re: drivetrain noise, please help!
Posted: Mon Nov 28, 2016 11:23 am
by 93wagonship
Thkx man, yep new tob (exedy clutch kit). And it doesn't seems to be the problem. Yes, it's speed related (from about 50 mph on).
Anyway to calm that noise down a little? Change the diff fluids or use mOs2 (like liquymoly)?
Depending on how much it wil set me back, I'm selling the car as is, unfortunately cannot diy.
Re: drivetrain noise, please help!
Posted: Mon Nov 28, 2016 2:20 pm
by marsh27
My old 93 did the same thing when I replaced the clutch. I knew it was the tob but I sold it before I billed the tranny back out
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Re: drivetrain noise, please help!
Posted: Mon Nov 28, 2016 2:42 pm
by 93wagonship
Hope deeply it's just the tob. Maybe the guy just didn't lube the shaft properly...
Re: drivetrain noise, please help!
Posted: Mon Nov 28, 2016 2:48 pm
by 93wagonship
Today I've managed to suck about a quarter of transmission/front diff excess oil. Now the dipstick read F again. Washed underneath to see if the leaking axles will stop leaking.
I was observing the job, the guy also inverted the heater hoses (upper / lower) which I've managed to undo. Also, he used RTV in the valve cover gasket, wtf? Well, I'm not going back there anyway.
Cheers
Re: drivetrain noise, please help!
Posted: Tue Jan 17, 2017 3:14 pm
by 93wagonship
Well I've had a professional to diagnose this and most likely bearings inside the transmission / differential. Will not fix it now though.