AdventureSubaru Posted November 7, 2012 Share Posted November 7, 2012 97 Impreza Outback 2.2 with 5 speed. 264,000 miles Started small but is getting louder. When I first get going in the morning and go in reverse I usually get a pretty loud clunk from the rear. (You can feel it through the floor/seat) This doesn't happen as I shift the trans but as the car starts moving. doesn't matter when the car is given gas, or rolls back (I often park on a hill.) Also, there is a rubbing/grinding noise coming from the back. As per usual, the faster you go, the louder it gets. I assume they are related. I suspected possible diff issues, axle or caliper. I have an auto yard 5 miles away with a few imprezas in it and a day off. Any suggestions to diagnose it? Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted November 7, 2012 Share Posted November 7, 2012 is there an opportunity to have someone move the car while you listen outside? At least you may be able to determine if the sound is central or L/R. have you inspected the brakes or other components? certainly carrier bearing/u-joints would be suspect if the sound is central. Link to comment Share on other sites More sharing options...
AdventureSubaru Posted November 7, 2012 Author Share Posted November 7, 2012 Took a ride in the trunk of the car. Sounds like a light rubbing on the driver side rear. Gets pretty loud around 50 mph and up. Doesn't sound like any bearing noise I've heard. Sticky caliper maybe? Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted November 7, 2012 Share Posted November 7, 2012 (edited) Took a ride in the trunk of the car. Sounds like a light rubbing on the driver side rear. Gets pretty loud around 50 mph and up. Doesn't sound like any bearing noise I've heard. Sticky caliper maybe? that side would likely be hotter than the other if either pads, or the parking brake shooes inside the 'hat', were dragging. Feel or try to measure (with an infrred remote therm) the temps - one side then the other. Some say, and I have suggested in the past, that if a bearing is going out, the same test will work, but i tested that recently on my car when I had a known bad bearing (when on jacks, left rear wheel would move about 2mm) and there was no temp difference. I'd say, feel for temp differences, inspect the brakes, but prepare for it to be the bearing. Though a clunk seems more like a pad or caliper problem. longshot might be tire rubbing on the spring perch - but you'd likely see the tire 'leaning' or the car leaning oddly. Even broken springs can LOOK ok when their loaded. at that mileage - some people would have already changed bearings 2-3 times! (my WRX got a rear bearing at just 42K !) Edited November 7, 2012 by 1 Lucky Texan Link to comment Share on other sites More sharing options...
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