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OFFICIAL 2nd gen 4x4 front differential bearing vibration thread

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Old 07-21-2013, 07:32 PM   #1201
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^^^ Well, now you are vested in it and are going to have to keep it for a long time. Don't feel to bad about having done those other things. The front diff. is a POS and you would likely be in there doing the bushing before long anyway. Looking at your parts replacement list I don't see any unnecessary fixes given its history IMHO. And think of the attention you have given it.
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Old 07-23-2013, 07:50 AM   #1202
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***I have a 1st Gen*** ECGS now has the bearing for the 1st gens too. I purchased and installed it this past weekend. No more vibration. Thanks ECGS.
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Old 07-24-2013, 08:27 AM   #1203
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Smile Toyota Corporate Responses ?

Hi all, I traded my 95 Taco with 290K Mi, running great for an 08 4 Dr. to have room for my rapidly growing grand kid. I bought the 08 last year with about 80K Mi. on it all was well until about 88 K Mi. now I have the "growl" . Toyota dealer I.D. ed the problem as drive shaft and estimated $1,500 to replace it. I replaced the center carrier and "U" joint myself with no improvement, all joints really appear and feel good and are well lubed.
After reading this forum I am convinced that there is a basic design/fabrication fault and that Toyota must know about it? Does any one here know ???

Thanks, bob
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Old 07-26-2013, 07:59 AM   #1204
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Ok, now on to the next problem... I hear a rattling noise like a chain sound for lack of a better description when I let up on the gas at around 55 mph. coming from the drive shaft or rear diff or maybe the transfer case sometimes. I noticed it with the rear off the ground and running the back wheels but thought it may have been due to no load on the wheels . Anybody know what this might be?
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Old 07-26-2013, 08:05 AM   #1205
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Quote:
Originally Posted by tr1957 View Post
Ok, now on to the next problem... I hear a rattling noise like a chain sound for lack of a better description when I let up on the gas at around 55 mph. coming from the drive shaft or rear diff or maybe the transfer case sometimes. I noticed it with the rear off the ground and running the back wheels but thought it may have been due to no load on the wheels . Anybody know what this might be?
Exhaust shield?
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Old 07-26-2013, 08:34 AM   #1206
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Quote:
Originally Posted by tr1957 View Post
Ok, now on to the next problem... I hear a rattling noise like a chain sound for lack of a better description when I let up on the gas at around 55 mph. coming from the drive shaft or rear diff or maybe the transfer case sometimes. I noticed it with the rear off the ground and running the back wheels but thought it may have been due to no load on the wheels . Anybody know what this might be?
There is a current thread going here on TW about possible transfer case chain rattles and vibrations. There is also one on Toyota Nation that dates back a couple of years about the same. The issue surrounds whether or not the transfer case chain actually turns, albeit slowly, when in 2WD. Might want to take a look these.
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Old 07-26-2013, 09:02 AM   #1207
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Thanks, I will check it out , I don't think it is the exhaust shield but will check this weekend.
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Old 08-08-2013, 07:30 AM   #1208
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discovered another issue ,won't go into 4 wheel lo.
The light flashes and beeps but nothing happens.
any ideas?
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Old 08-08-2013, 09:01 AM   #1209
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Quote:
Originally Posted by tr1957 View Post
discovered another issue ,won't go into 4 wheel lo.
The light flashes and beeps but nothing happens.
any ideas?
^^^ This is a really well-known problem and falls into one of three catagories:

1. Follow the instructions exactly. On mine I must be fully at a stop, in neutral, plant the clutch to the fire wall, push in the 4WD switch, and slowly turn it.

2. Even though it is a 4lo problem, the front ADD has a feedback mechanism to the 4WD ECU that can affect this.

3. Us it or lose it. The 4WD actuator on the transfer case itself is known to be a bad part on early vehicles and there was actually a part change about 2008 as I recall. A lot of the problems were because it was not being used and would stick or water would get in there and gum it up. Don't even try to take it apart without first reading the write-ups.

I can't link it for you now because I am traveling and the only thing I have is dial-up, but do a search and there is an entire thread about this on Toyota Nation and other Tacoma technical sites. In other words, there is a bunch of info.

I had the best luck using Google starting the search with the word "Tacoma" followed by "will not go into 4lo" or other such variants. The Toyota Nation thread is a good one because it gives diagnostics. As I remember the title of it begins something like "My Turn for Help with....". Maybe if 05Moose is reading this he can jump in and give the TN link. Otherwise try a PM to him here or over there.

Good luck.
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Old 08-08-2013, 10:49 AM   #1210
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Sure, put me on the spot. :lol:

I think this is the thread you remember (RTFM is good with electrical troubleshooting steps).

http://www.toyotanation.com/forum/61...oing-4low.html
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Old 08-08-2013, 10:56 AM   #1211
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thanks

Thanks , I knew you guys would have some info.
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Old 08-08-2013, 07:27 PM   #1212
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it was the clutch switch, I have been using the clutch start cancel switch on the dash because the floor switch under the clutch did not work . I don't see what is wrong with the floor switch so I used a rubber stick on thing on the clutch pedal to push the switch in. now it goes right into 4 wheel low. Thanks again for the help.
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Old 09-04-2013, 02:28 PM   #1213
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Differential problem? or?

Hi All, First off wanted to say that I'm a new member that greatly appreciates the Tacoma Tech Forum. My truck is a 2008 Tacoma TRD 4x4 Sport, access cab w/tow package. I have read thru hours of threads on different subjects that have been very helpful. However, I still have a problem (of course). I have a low frequency growl coming from the front end on the passenger side. I know for sure it is the passenger side because everyone that rides with me can plainly hear it. It starts around 25 mph and is pretty loud all the way to 55 mph before it slowly fades. I cannot find the problem. Wheel bearing was the first thing I checked and it appeared to be fine, but due to lack of any other symptoms I went ahead and replaced the bearing with the help of your threads on the subject. No change to the growl unfortunately. The cv axle appears to be in good condition. I have a stock truck with no lift mods ever installed. I bought it new and have 62,000 on the odometer, so no warranty due to mileage and year. My question is, has the passenger side differential bearing ever been a problem on any 2nd generation Tacoma's? EastCoastGear Supply has told me that their bushing is only for the driver's side, and that the passenger side bearing does not fail because it does not support the passenger side cv axle the way the drivers side does. They also stated that the passenger side differential cannot be serviced without removing the differential from the vehicle. Can someone verify that what they say is correct? If so, I would appreciate any help with finding the cause. One more thing, the noise is steady on straight aways and left turns, but subsides momentarily on right hand turns. Thanks
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Old 09-04-2013, 03:05 PM   #1214
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Well now that your familiar with the bearing situation, go ahead and take a look at the driver side. I had this exact problem. Took both bearings off checked them and gave them the all clear. Waited about 2 weeks and checked them again. Turned out it was the opposite side I swear I heard it on and the bearing was about to seize this time around.
Just sayin.
As for any other vibration sounds, maybe check to see that your tires are still balanced and your brakes are in good condition.
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Old 09-04-2013, 03:35 PM   #1215
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Quote:
Originally Posted by crocket49 View Post
Hi All, First off wanted to say that I'm a new member that greatly appreciates the Tacoma Tech Forum. My truck is a 2008 Tacoma TRD 4x4 Sport, access cab w/tow package. I have read thru hours of threads on different subjects that have been very helpful. However, I still have a problem (of course). I have a low frequency growl coming from the front end on the passenger side. I know for sure it is the passenger side because everyone that rides with me can plainly hear it. It starts around 25 mph and is pretty loud all the way to 55 mph before it slowly fades. I cannot find the problem. Wheel bearing was the first thing I checked and it appeared to be fine, but due to lack of any other symptoms I went ahead and replaced the bearing with the help of your threads on the subject. No change to the growl unfortunately. The cv axle appears to be in good condition. I have a stock truck with no lift mods ever installed. I bought it new and have 62,000 on the odometer, so no warranty due to mileage and year. My question is, has the passenger side differential bearing ever been a problem on any 2nd generation Tacoma's? EastCoastGear Supply has told me that their bushing is only for the driver's side, and that the passenger side bearing does not fail because it does not support the passenger side cv axle the way the drivers side does. They also stated that the passenger side differential cannot be serviced without removing the differential from the vehicle. Can someone verify that what they say is correct? If so, I would appreciate any help with finding the cause. One more thing, the noise is steady on straight aways and left turns, but subsides momentarily on right hand turns. Thanks
Quote:
Originally Posted by IgnorantlyAlberta View Post
Well now that your familiar with the bearing situation, go ahead and take a look at the driver side. I had this exact problem. Took both bearings off checked them and gave them the all clear. Waited about 2 weeks and checked them again. Turned out it was the opposite side I swear I heard it on and the bearing was about to seize this time around.
Just sayin.
As for any other vibration sounds, maybe check to see that your tires are still balanced and your brakes are in good condition.
^^^^^THIS^^^^^

double check the opposite side, the noise can resonate through the drive train & sound like it's the opposite side.. I've ran into that plenty of times.

Also, grab the CV @ the differential & give it a good wiggle up & down taking note of the play. My truck had a noise between 55 & 65 which turned out to be a worn roller bearing, fixed it with the bushing from ECGS.
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Old 09-04-2013, 05:39 PM   #1216
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Quote:
Originally Posted by crocket49 View Post
Hi All, First off wanted to say that I'm a new member that greatly appreciates the Tacoma Tech Forum. My truck is a 2008 Tacoma TRD 4x4 Sport, access cab w/tow package. I have read thru hours of threads on different subjects that have been very helpful. However, I still have a problem (of course). I have a low frequency growl coming from the front end on the passenger side. I know for sure it is the passenger side because everyone that rides with me can plainly hear it. It starts around 25 mph and is pretty loud all the way to 55 mph before it slowly fades. I cannot find the problem. Wheel bearing was the first thing I checked and it appeared to be fine, but due to lack of any other symptoms I went ahead and replaced the bearing with the help of your threads on the subject. No change to the growl unfortunately. The cv axle appears to be in good condition. I have a stock truck with no lift mods ever installed. I bought it new and have 62,000 on the odometer, so no warranty due to mileage and year. My question is, has the passenger side differential bearing ever been a problem on any 2nd generation Tacoma's? EastCoastGear Supply has told me that their bushing is only for the driver's side, and that the passenger side bearing does not fail because it does not support the passenger side cv axle the way the drivers side does. They also stated that the passenger side differential cannot be serviced without removing the differential from the vehicle. Can someone verify that what they say is correct? If so, I would appreciate any help with finding the cause. One more thing, the noise is steady on straight aways and left turns, but subsides momentarily on right hand turns. Thanks
^^^ My money is on the wheel bearing or the ball bearing on the right side where the RH CV shaft enters the ADD tube. Too many new wheel bearings are messed up during the pressing process by not following the exact instructions only to find out soon after it was replaced that they have a mystery noise appear but the wheel bearing is dismissed out of hand because "it was just replaced."

As far as the front diff goes there is a second and exact type of needle bearing on the right side of the diff a well as on the left in essentially the same location. What is different though is the right CV shaft feeds into a ball bearing, not a needle bearing. The ball bearing on mine exceeded the factory slop specs. and it led me to keep digging. The ADD tube separates the ball bearing and needle bearing by a goodly distance.

But.............. a short stub shaft feeds into the right side just just like the left. Mine was all torn up by the needle bearing on the right side so I had to replace the stub shaft, pull the factory needle bearing, and put another ECGS bushing on the right side too. Chase at ECGS is well aware of the situation with my right side that I encountered.

Mine was probably a fluke or just a total POS differential that gave me so many problems on both sides. I don't believe that needle bearing on the right actually produces many problems in reality, so I would generally put it low on the list of suspects.

Get the thing elevated and find a helper. Start pinpointing the noise while the drive train is spinning.
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Old 09-04-2013, 05:57 PM   #1217
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Funny that this thread was bumped today. I was on a freshly paved road and the noise I always attributed to my BFG A/T's was actually the needle bearing. Just for the piece of mind, I kicked my 4H on and the noise went away. Turned it back to 2H and let off the gas, then got back on it....noise returned.

When I got home, got under the rig and wiggled the driver's side CV shaft, lots o' slop up and down and in and out. I only have 28.5K on mine. Hope it holds out until after December when I can get my Christmas money. May as well do some 5100's all the way around while I'm at it, too.
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Old 09-05-2013, 05:34 AM   #1218
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Thanks for the reply. I'll try to pinpoint where it is coming from with a helper. One thing I forgot to mention is that the noise does not go away when I'm in 4 wheel drive. The noise is always present between 25-55. The wheel bearing was purchased with the hub assay included as a complete unit, so I'm hoping it was done correctly, but mistakes do happen. Will let you know how it goes.
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Old 09-07-2013, 03:30 PM   #1219
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Ok guys, I have a new problem that im feeling and maybe you can help me with advice.

Background:

-2010 Toyota Tacoma 4wd Sport Access Cab with 52k miles
-Replaced the diff fluids at 10k miles with mobil 1
-I grease the drive shaft every 5k with Mobil 1 synthetic grease
-I just replaced the shocks with 5100's set at 0.85" and added a top plate 1/4" spacer
-Shortly after the shocks I replaced the tires with Michelin LTX MS2's and had it aligned to the following specs:
Front Caster- Left @ 1.8 Right @ 2.2
Front Camber- Left @ 0.4 Right @ 0.4
Toe- Left @ 0.05 Right @ 0.05

The Problem:

After installing the shocks, the truck felt like there was rolling resistance and I felt a slight binding/growling from the front. It appears to be coming from the left. I thought it was because the alignment was far out from the shock replacement. When I finally got it on the alignment rack I saw that it wasn't that far off and after the alignment the feeling was still there. My thought is that the wheel bearing is going bad.

Started to do research and it sounds like my problem could be Carrier Bearing Angle, Wheel Bearing or front Diff Bearing. Since the feeling is coming from the front, I dont think its the CB. Im going to try to flip on the 4wd and see if the feeling goes away.

If it is the front diff then what are my best options for repair? I have the extended warranty from Toyota so should I have them diagnose it and possibly replace the front diff? Is there any damage in the front diff or is the needle bearing the only issue? My goal is long term reliability.
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Old 09-07-2013, 04:46 PM   #1220
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Quote:
Originally Posted by Nixinus View Post
Ok guys, I have a new problem that im feeling and maybe you can help me with advice.

Background:

-2010 Toyota Tacoma 4wd Sport Access Cab with 52k miles
-Replaced the diff fluids at 10k miles with mobil 1
-I grease the drive shaft every 5k with Mobil 1 synthetic grease
-I just replaced the shocks with 5100's set at 0.85" and added a top plate 1/4" spacer
-Shortly after the shocks I replaced the tires with Michelin LTX MS2's and had it aligned to the following specs:
Front Caster- Left @ 1.8 Right @ 2.2
Front Camber- Left @ 0.4 Right @ 0.4
Toe- Left @ 0.05 Right @ 0.05

The Problem:

After installing the shocks, the truck felt like there was rolling resistance and I felt a slight binding/growling from the front. It appears to be coming from the left. I thought it was because the alignment was far out from the shock replacement. When I finally got it on the alignment rack I saw that it wasn't that far off and after the alignment the feeling was still there. My thought is that the wheel bearing is going bad.

Started to do research and it sounds like my problem could be Carrier Bearing Angle, Wheel Bearing or front Diff Bearing. Since the feeling is coming from the front, I dont think its the CB. Im going to try to flip on the 4wd and see if the feeling goes away.

If it is the front diff then what are my best options for repair? I have the extended warranty from Toyota so should I have them diagnose it and possibly replace the front diff? Is there any damage in the front diff or is the needle bearing the only issue? My goal is long term reliability.

If it goes away in 4wd, then you will need to change out the driver side diff bearing. This is a better alternative to a bearing http://eastcoastgearsupply.com/i-853...l-bushing.html and it has worked for me for close to 50k miles so far.
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