2008 Prerunner Vibration

OK guys, I've searched and am having trouble finding a solution to my vibration.

2008 Tacoma Prerunner with 183,000 miles. I bought it new, my daily driver...mostly highway miles.

Recently it developed a vibration, kind of like the rumble strip. It only does it when the truck is cold and at very low speed. Either at takeoff, or just at slow speeds, 5mph or less. I especially notice it when the truck is cold and I am creeping in a drive through at lunch. Forward or reverse, doesn't matter.

Since it started, I had the transmission flushed at the dealer and tried to add some shudder fix, neither seemed to help at all.

Can anyone help?

Thanks

 

Lube your driveshaft zerks if you haven’t yet.

 

That is good advice above.

Also if you have aggressive tires particularly mud terrains you can get a noticeable vibration at low speeds.

 

If I remember right, it doesn't have zerks. I couldn't find any.

I have street or highway tires. It isn't as much of a vibration as it is a shudder. Much like rumble strips at low speed.

 

Carrier bearing

 

Check your u-joints,at your miles I would replace them for sure.

 

Replace them with ones that have zerks

 

Any other ideas??

 

I'm starting to think it is the LSD shuddering...maybe differential clutch packs. Should I add another bottle of friction modifier?

 

Dealership confirmed it is the differential clutch packs...and they only want $3,075 to fix it!

Has anyone replaced these before?

 

Put another bottle of friction modifier in,if that dont stop it,then have a driveline shop look at it and go from there,I would not trust the dealer.

 

Good advice^^^

Run from the dealer

 

Before I spend much money at all, I think I will try the extra bottle of friction modifier...couldn't hurt.

No squeaking noises and I believe I've narrowed it down to when I'm turning.

 

If it's only when you are turning then my money is on the LSD. Are you running synthetic or conventional gear oil?

 

Conventional...with a bottle of additive.

 

Had the shutter too. Bad Ujoint at 124K miles. Start there.

It is a lot cheaper than a differential service.

 

Put half a bottle of modifier in, about 90% better after just two days. I will keep an eye on it the rest of the week, if it doesn't get any better, I'll add the rest of the bottle.