I thought I'd pass on some information that might help someone. In mid-December, I picked up my ordered 2005 SR5 AC V-8 Tundra. It is 2WD with a locking differential; an option combination that I'm told is very rare, at least around the Pacific Northwest region. Soon thereafter, I noticed, what was later described as a "harmonic vibration", that occurred around 25 mph. On my first trip to the dealership, they pronounced it a "normal" condition. I didn't accept that explanation, and took it in Jan. 6, and picked it up yesterday (one week) with the issue (and two others) resolved. Here's how the assessment went, with the involvement of a Toyota regional service representative.
They quickly determined that the problem was a drivetrain vibration somewhere from the transmission output shaft to the differential. First, they experimented with the angle of the transmission - just made it worse. Next, they moved the driveshaft center support to different positions - no change. Then they substituted another driveshaft - no change. They checked the balance of my driveshaft - just fine. They put their vibration sensors near the transmission and differential and determined that the transmission was ok; the problem was on the differential end. And finally, they experimented with the angle of the differential, using tapered shims between the leaf springs and the differential housing. They ended up tilting the differential downward 4 degrees, and it solved the problem - absolutely no vibration at any speed. One unexpected benefit was that they checked the wheels and tires during all this. Wheels were fine, and a roadforce balance showed three tires that needed further balancing. My ride is now silky smooth.
My first trip into the dealership was to replace one of the clear rock guards on the rear fender flare, fix the vibration, and adjust the driver door. If I had accepted the service department's original response, I would be driving with a very annoying drivetrain vibration, have a poorly installed rock guard (air bubbles), and a door that latched harder than it should (was told the door was normal also). It took almost a month, but all issues have been resolved satisfactorily. The lesson here is to be persistent when you know something is wrong.
I must say that when Toyota got involved, they were extremely interested in solving the vibration issue. That's encouraging for the future. I know this is long, but I hope this information may help someone.
Excellent-- though I'd quelled most of vibration by putting a load in the bed, effectively doing the same thing as a pinion angle adjustment I'd imagine.
There's another thread here wherein another owner solved his vibration problems the same way. Apparently Tundra rear suspensions are set up with the idea that no one will be running empty?
__________________
2005 Tundra Regular Cab, V8-- sold!
1958 Oldsmobile Dynamic 88, soon to be supercharged
2003 Yamaha YZF600R
I thought I'd pass on some information that might help someone. In mid-December, I picked up my ordered 2005 SR5 AC V-8 Tundra. It is 2WD with a locking differential; an option combination that I'm told is very rare, at least around the Pacific Northwest region. Soon thereafter, I noticed, what was later described as a "harmonic vibration", that occurred around 25 mph. On my first trip to the dealership, they pronounced it a "normal" condition. I didn't accept that explanation, and took it in Jan. 6, and picked it up yesterday (one week) with the issue (and two others) resolved. Here's how the assessment went, with the involvement of a Toyota regional service representative.
They quickly determined that the problem was a drivetrain vibration somewhere from the transmission output shaft to the differential. First, they experimented with the angle of the transmission - just made it worse. Next, they moved the driveshaft center support to different positions - no change. Then they substituted another driveshaft - no change. They checked the balance of my driveshaft - just fine. They put their vibration sensors near the transmission and differential and determined that the transmission was ok; the problem was on the differential end. And finally, they experimented with the angle of the differential, using tapered shims between the leaf springs and the differential housing. They ended up tilting the differential downward 4 degrees, and it solved the problem - absolutely no vibration at any speed. One unexpected benefit was that they checked the wheels and tires during all this. Wheels were fine, and a roadforce balance showed three tires that needed further balancing. My ride is now silky smooth.
My first trip into the dealership was to replace one of the clear rock guards on the rear fender flare, fix the vibration, and adjust the driver door. If I had accepted the service department's original response, I would be driving with a very annoying drivetrain vibration, have a poorly installed rock guard (air bubbles), and a door that latched harder than it should (was told the door was normal also). It took almost a month, but all issues have been resolved satisfactorily. The lesson here is to be persistent when you know something is wrong.
I must say that when Toyota got involved, they were extremely interested in solving the vibration issue. That's encouraging for the future. I know this is long, but I hope this information may help someone.
I also ordered and took delivery Nov 10 of an 05 SR5 V8 2wd made Oct 27.
This truck is silky smooth thank goodness. Feels like a Lexus (I've driven most Lexus models). I haven't found a single defect and I hope nothing goes wrong because I don't want anyone touching my Tundra at the dealership.
I also ordered and took delivery Nov 10 of an 05 SR5 V8 2wd made Oct 27.
This truck is silky smooth thank goodness. Feels like a Lexus (I've driven most Lexus models). I haven't found a single defect and I hope nothing goes wrong because I don't want anyone touching my Tundra at the dealership.
That's great. Do you have a locking differential? If not, that may have been the difference.
That's great. Do you have a locking differential? If not, that may have been the difference.
Is "locking differential" the same as limited slip differential? I do have that and I think it is standard equipment for all Tundra V8 trucks available in Canada.
I don't see anything about a locking diferential in my brochure.
Is "locking differential" the same as limited slip differential? I do have that and I think it is standard equipment for all Tundra V8 trucks available in Canada.
I don't see anything about a locking diferential in my brochure.
Sorry for the confusion. I don't know why I stated locking differential. I meant to say limited slip differential.
Drivetrain Vibration
Linear Mode
