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Old 01-31-2013, 09:17 PM   #1
klinebau
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Member#: 122383
Join Date: Aug 2006
Chapter/Region: MWSOC
Location: Troy, MI
Vehicle:
2006 WRX Wagon
Silver

Default Jerk and Squeal

I need help to determine what may have caused this incident below. I am a little bit worried about getting stuck somewhere or breaking something expensive. I looked over the rear end and checked the belts and don't see anything abnormal. Maybe you have other ideas of things I should check.

Here's what happened:
I drove my car after jump starting it (dead battery) and took it out of the subdivision to the main road. After I accelerated to about 50 MPH, the car suddenly jerked almost like someone attached a rope to the rear end. I turned off the main road to head back home and the car made a squealing noise around the turn. I then headed back into the subdivision to go home. The car acted normal the rest of the way home. I drove it a few hours later for a short trip, but it seems to be normal.

The squeal noise definitely felt like it came from the passenger rear of vehicle. The noise sounded like a squealing belt expect it was rhythmic with the wheels turning.

What's been done to the car recently:
  • My car had a dead battery because my daughter left the interior lights on and I was just taking it for a short drive to charge it up after jump starting.
  • I replaced all four struts and strut mounts about a month ago.
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Old 02-01-2013, 02:39 AM   #2
Aaron'z 2.5RS
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Location: Hickigan
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'00 RS/WRX Stg5
'98 RS Stock

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Have you looked at it?

Did the strut to knuckle bolts slip? Are you rockin mad camber on that corner? Rub marks? Tire/strut/wheel well?
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Old 02-01-2013, 10:44 AM   #3
klinebau
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Join Date: Aug 2006
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Location: Troy, MI
Vehicle:
2006 WRX Wagon
Silver

Default

As I mentioned previously, I have looked at the rear end including struts. None of the bolts have slipped and camber looks normal although I don't think camber is adjustable in the rear. The fronts look fine as well.

When the problem happened the car was not completely warmed up, but maybe 85% there. We also had unusual weather-- 50 degrees and rain and then 20 degrees and snow by the next day. The car was frozen and I had to forcefully open the door just to get in.
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Old 02-01-2013, 06:00 PM   #4
klinebau
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Join Date: Aug 2006
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Location: Troy, MI
Vehicle:
2006 WRX Wagon
Silver

Default

I drove the car to work and back today about a half hour each way with some expressway time. The car seems to drive fine. Now that I am looking for something wrong it seems like there is some whining in the transmission that wasn't there before... Could be that I am just hyper-sensitive now.

I think I will drain the trans fluid and rear diff fluid to see what I find. I am not sure what else to check since there is nothing visually wrong. I am convinced that the problem is in the driveline somewhere. The only thing I can think of that matches my original scenario is a separation of the snap ring on the center diff. Maybe it got caught in the transfer gears to cause the jerk I felt. I did replace the transfer gear bearings about three years ago.
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Old 02-01-2013, 06:12 PM   #5
trev762
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Location: southern ontario canada
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2011 sti sedan
plasma blue pearl

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Should be OK I think u might be over sensitive do to the fact It might have bin a stuck caliper from one extreme to the next. If I were u I would keep an eye on your situation for the next few days or week and go from there.
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Old 02-06-2013, 12:14 AM   #6
klinebau
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Join Date: Aug 2006
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Vehicle:
2006 WRX Wagon
Silver

Default

Unfortunately, there appears to be a real problem with the transmission.

There is a definite whine in all gears that is getting louder each day. Gears 2, 3, 4 make the most noise, although all the gears make some noise. The noise is even present when cruising in neutral, although it is not as loud.

When I am stopped or going really slow in traffic, I can smell gear oil. The smell goes away when I am moving. I put the car up on stands earlier and there are no visible fluid leaks and the level on the dipstick seems to be the same from when I last filled it. There is a very small amount of oil that is present on the outside of the dipstick tube. Perhaps it is weeping from there a bit. Although I didn't drain the fluid, I can see that the fluid is darker on the dipstick.

I also checked to make sure the axles didn't pop out. It really looks like I have an internal issue... probably a bearing somewhere. I'd really like to drop the transmission and fix it myself, but I have decided to take it in somewhere. This is my daily driver and I cannot afford to be without a vehicle for several weeks, which is what it would take for me to do it myself... assuming that I could even fix it in the end.

I've been searching for hours and my symptoms just don't seem to match any other threads. I'll post back what I find out.

Last edited by klinebau; 02-06-2013 at 12:18 AM. Reason: correct grammar mistakes
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Old 02-23-2013, 09:18 PM   #7
klinebau
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Join Date: Aug 2006
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Location: Troy, MI
Vehicle:
2006 WRX Wagon
Silver

Default

I got the car back from the shop on Wednesday.

The problem did turn out to be with the bearings in the transfer gears. the bearing that sits against the transfer case on the driven gear was ate itself. The shop says a piece of sealant blocked an oiling passage or channel. I can't visualize how this bearing gets oiled and can't find a detailed enough picture. In any case, the outer race of the bearing spun inside the transfer case. I ended up having 3 bearings replaced and a new transfer case. While they had the transmission out, I had them replace the clutch also.

The shop didn't seat one of the axles properly and the transmission leaked a bit of oil before I was able to discover. The level was only slightly below the low level on the dipstick so I don't think it will be problem. I reseated the axle earlier today and everything seems to be fine now. The transmission makes a little bit more gear noise than before this all started. I will give it a few days to see how it all shakes out.

In the end, I could have fixed all this myself, but I thought the problem was a lot worse than it really was. I also started a new job and really need my car now. That is why I panicked and took it in to the shop.
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Old 02-24-2013, 09:09 AM   #8
Aaron'z 2.5RS
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'98 RS Stock

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Here's hopin for the best...its a crappy road, ive bewn down it a few times...
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Old 03-16-2013, 03:17 PM   #9
klinebau
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Join Date: Aug 2006
Chapter/Region: MWSOC
Location: Troy, MI
Vehicle:
2006 WRX Wagon
Silver

Default

It turns out that the mechanic did not replace the transfer case section. Now the car has a really loud noise that is dependent on speed. I brought the car back to trans shop and they told me that they shimmed the bearing instead of replacing the case. I don't know yet if the bearing is failing again, but it is loud.

My thought is that the mechanic shimmed it too tight and that is why it is making so much noise. What are my options at this point?

I haven't looked at the transfer case, but I have the old bearing outer race and it is torn up on the circumference from spinning. I am assuming the case is bad. Should I replace the case section and then measure and shim properly or can I get away with just shimming the gears using my existing case.
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