Torque converter shutter with 05 tundra

[02s4audi]

I just recently purchased a 2005 Toyota Tundra. It has 170k miles on it and runs like a top. About 3 weeks after purchasing it, I felt a shudder one day. Then started to feel it more and more. It was violent at times and felt like driving over rumble strips. Would only happen when in overdrive going up a slight incline. If the truck down shifted then it would go right away. I had Toyota do a transmission service which was only a fluid exchange, no filter as most Toyota dealers won’t do the filter as it “doesn’t have one” (but it does) and it claims they changed 10 quarts (that’s what they charged me for). Dry fill for this transmission is 11.5. Upon driving home from the dealer I noticed nothing on the 40 minute highway trip. But when I got in town and went up and over a bridge it happened again and more aggressive then before. I drove to the store and bought some lubegard instant shudder fix. Threw that in and it has greatly improved. I cannot get the truck to shudder like it did. I’ve tried and tried. I still feel like there’s a slight shake/vibration when going up inclines in overdrive. What else can I do to alleviate this? I assume Toyota used WS fluid. Are the friction modifiers in that oil stout and robust? Is there another fluid that would be better? Maxlife? Add more additives to my current fluid? Another shudder fix bottle? Lucas trans additive? At the moment it’s minimal if at all. But everything is fairly fresh. I don’t want the fluid to break down soon and cause it to come back.

 

[Astro14]

Three reason for shudder come to mind, wrong fluid, wrong fluid level, or worn out converter clutch.

So, start with the simple/cheap. They probably used the correct fluid at the dealer. Checking the level isn’t hard, it involves removing a plug with the engine idling, level ground, and the proper transmission temp. Do that first. No dipstick, by the way, so follow the Toyota directions.

Changing fluid on this transmission isn’t too hard, you might consider another fluid change. Do that next.

If the lubeguard helped, that’s good news. A Google search will turn up directions on how to change the fluid and filter in this. You’ll need about 14 quarts of fresh fluid, a filter, a pan gasket, and both drain plug sealing rings.

 

[Delta]

The A750 is notorious for this issue. Sometimes a fluid exchange will work, sometimes not. The Lubeguard Shudder Fix is a very common additive that alot of people have success with. Be careful with a full "flush" at higher mileage. I have the same transmission in my Tacoma and had the BG fluid exchange service done at the dealer around 140K (assuming first ever service). While initially everything was great 5K miles later the "honeymoon" is over and is shifting quite poor.

 

[02s4audi]

The A750 is notorious for this issue. Sometimes a fluid exchange will work, sometimes not. The Lubeguard Shudder Fix is a very common additive that alot of people have success with. Be careful with a full "flush" at higher mileage. I have the same transmission in my Tacoma and had the BG fluid exchange service done at the dealer around 140K (assuming first ever service). While initially everything was great 5K miles later the "honeymoon" is over and is shifting quite poor.

I’ve definitely come across a lot of shuttering issues on the forums on all sorts of Toyota’s (not sure how much use the a750f). Some are only on acceleration, are only moderate etc. mine at one point was very rough. Now with the new fluid and lubegard it’s tamed down. I feel like it still vibrates/shakes ever so slightly in overdrive going up an incline. I’m extremely conscious about it now though and it’s possible I would’ve never felt it if I didn’t know it was a problem. I’m also on oversized tires which probably cause a little more strain and probably make the shutter more susceptible. I’m thinking of doing a second bottle of lubegard instant fix, I didn’t quite get 1 whole bottle in anyway with the awkward side fill port in the 05+ Tundras, or possibly some Lucas additive, or even the lubegard atf alternative fluid they offer.

 

[RedSpider]

I don't hang out on the Toyota forums much anymore because my Sequoia has been absolutely boringly reliable (knock on wood) but if I remember right there were a good number of people getting shuddering that thought they had transmission issues where it really ended up being bad bearings in the differentials.

 

[meep]

these are really good trucks, congrats on your purchase. The 2006 called for Toyota WS, their thinner fluid. i switched mine over to amsoil, BUT, I think they changed transmissions in 2006. Is yours a 4 speed or 5?

if you’ve got vibration under load, crawl up under there and inspect the u-joints and the center bearing on the split driveshaft. My center bearing started to rot around 135,000 miles and the u-joints started getting sloppy around then too.