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Driveline squeal/scraping noise
Posted 21 March 2005 - 02:56 AM
Got a minor problem (I hope) with my '87 Subaru Standard Hatchback. Whenever the vehicle is moving, I hear a loud intermittent squeal/scraping noise coming from near the firewall under the hood or under the car in that area. It almost sounds like a bearing shrieking. It has progressively gotten louder and more frequent over the past few weeks. It now pretty much makes the noise all the time. It started out only making the noise when the car was in 4WD, but now it does it in 2WD too. I can shut off the engine while the car is rolling and it still makes the noise, so I know it is not from the engine or any engine accessories. I also checked the wheel bearings, which are fine. The sounds gets faster as the speed of the car increases, and doesn't change pitch with the speed of the engine or in different gears. It is steady with the speed of the car. It does it regardless of what gear it is in, also in neutral, and with the clutch pedal in or out. The ONLY gear it does not make the noise in is reverse. Any ideas on what this could be? A bad bearing in the transmission? The car has 147,000 miles on it and the clutch, transmission and everything is original. Thanks for your help.
Posted 21 March 2005 - 07:52 AM
Posted 21 March 2005 - 11:18 AM
also look at the driveshaft u joint, my car made a vibrating noise that sometimes would carry over to a whine near the tranny, it would chang4 between 2 and 4wd undill one day it got loud all of a sudden and failed on the highway. i thought the rear diff or axle exploded but the driveshaft u-joint busted, so i kept going till i tied the driveshaft with a coat hanger. got 1000 miles on it like this but im fixing it today
Posted 23 March 2005 - 02:44 AM
Checked the gear oil levels and they are all fine. Also checked for anything rubbing on the driveshaft, but found nothing. The sound seems to be coming more from under the hood than under the car, but I guess I could be wrong. It sounds like birds chirping, but like 50 times louder--like a cross between birds chirping and a loud squeal. It's driving me crazy and people look at me when I drive by. Somebody told me that since the noise is consistent with vehicle speed that it would have to be something to do with the output shaft of the trans or the front differential. Any ideas?
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