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Discussion Starter #1
Just started noticing on my 2005 2.5i that the engine is sounding louder than normal once I get over 50mph then take my foot off of the pedal. It almost feels like I'm in 3rd gear. I've counted shifts and even manually shifted to 4th but the engine is still making a louder low whine and feels like I'm slowing down faster with no coasting as if it's a lower gear. I can get to highway speeds as usual but I'm worried that I may have a transmission problem. Currently 52000 on the odo with no prior problems
Any thoughts???
 

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Start by checking the tachometer -- when cruising on the highway at around 60-65 mph, the tach would be around 2500 rpm. (2.5, NA, with 4-speed AT with original factory size tires). Or at 50 mph, it would be around 2000 rpm.
 

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Discussion Starter #4
Checked Tach

I checked the tach. Still running regular RPM's under 3000 while cruising around 70mph and around 2200 at 55 to 60 mph. If the trans was struggling it would have an impact on the tach reading right? I now notice a low roar when coasting to a stop around 10 to 15 mph. The tach returns to 1000 or lower. The tires are in good shape. I have not checked the pressure yet. Engine temp is normal, engine and transmission oil is clean and at good levels. Thinking about taking it to the mechanic on Monday to see if he notices or if he can run a diagnostic. Any other ideas??
 

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Maybe have someone drive the car while you pace it at each corner - maybe you'll hear a crunhy wheel bearing or ??

any work done before this began? Sometimes the 'tabs' on the lower end of the intake filter box don't get into their slots correctly. But, that would probably make a whooshing/roaring or other noise even sitting still.
 

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Given that the engine isn't apparently overreving, as if the transmission isn't shifting to the higher gears, I guess we'd need a more detailed description of the sound, when it appears, and whether it always appears every time the car is driven. Unfortunately, there could be many possibilities and narrowing it down, without being there, is quite the challenge. But I will mention one common source of noise -- a vibrating/loose heat shield under the car, or a leak in the exhaust system.
 

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Discussion Starter #8
Thanks

Thanks, I'll check the exhaust and the wheel bearings. I don't notice any external noise, crunching, squealing, etc. No burning smell either. The best way to describe it would be the engine just sounds louder when I stop accelerating whether I'm at 70 mph or 15 Mph. Can't tell if there is any performance drop. The computer gas milage read out is consistant with what it has always been. Are rear wheel bearing failures typical for this model with only 50k on the odometer?
 

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I had a bad RW bearing at 42K on my 06 WRX. disappointing but, it happens I guess.


wait...


EDIT, yeah, there's a recall that you may need to investigate;

5/2/2008
Legacy, Outback, certain 2005 and early 2006 models Rear Wheel Bearings may, over time, develop a noise condition that causes the bearing to produce a whining sound Subaru. has initiated an Extended Warranty Program for Rear Wheel Bearings on certain 2005 and early 2006 model year Legacy and Outback models. Coverage will be extended to 8 years or 100,000 miles.
During a quality review, Subaru discovered that there is a possibility that one or both of an affected vehicle's Rear Wheel Bearings may, over time, develop a noise condition that causes the bearing to produce a whining sound. This sound does not pose a safety issue and does not adversely affect the normal operation of the bearing. However, if the vehicle experiences this condition, it should be corrected by replacing the affected bearing, which will eliminate the sound. As a result of this finding and in the interest of customer satisfaction, SOA is extending the Rear Wheel Bearing warranty coverage period for the affected vehicles to 8 years (96 months) or 100,000 miles, whichever occurs first.
Technical Service Bulletin number 03-58-08
 

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Discussion Starter #11
1 LuckyTexan and MRK610 were right. The noise kept getting louder and louder from the rear right side. Had a friend ride with me to make sure I was not going crazy. Took it to the local Subaru dealership and they agreed; doing the warranty work as we speak with no hassle. Thanks so much for your replies.
 
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