Land Cruiser Not Maintaining Speed (1 Viewer)

[filer5000]

Hi guys,

I bought my Land Cruiser last year and ever since its had the issue of slowing down whenever my foot isn't on the accelerator. Itll slowly loose speed to the point where its annoying, but it isn't unsafe.

Im pretty sure it isn't a brake issue (they arent overly hot after driving). Ive also changed my front/rear diff fluid, engine oil, and transfer case fluid within the past 3k miles. Ive also tried spinning each wheel while in neutral and there seems to be a similar amount of resistance for all 4 wheels.

204k miles, 2007 Toyota LC 2UZFE

Any suggestions on why this might be happening?

 

[Trunk Monkey]

E-brakes dragging? Check the bell cranks? Slowly loosing speed is normal if it's in gear, just simple deceleration.

 

[filer5000]

E-brakes dragging? Check the bell cranks? Slowly loosing speed is normal if it's in gear, just simple deceleration.

E brake is already loose - it doesn't hold the car if I pull it all the way up. Ill look into the bell cranks.

While I agree, I can go down a smaller sized hill and maintain the same speed (or continue to gain speed)

 

[OEMGUY0720]

Could be:
• F/R wheel bearings
• pads to rotors clearance
• brake calipers piston stuck and not able to fully retract
• TCase bearings
• 3rd member bearing/s

 

[filer5000]

Could be:
• F/R wheel bearings
• pads to rotors clearance
• brake calipers piston stuck and not able to fully retract
• TCase bearings
• 3rd member bearing/s

Definitely could be wheel bearings... i fail state inspection for them last year, it wouldnt be surprising if the rest of them need doing.

As far as the transfer case bearings, what is the process of repairing those like?

 

[BamaHoo]

Are you saying the truck slows down if you take your foot off the accelerator pedal? That’s normal. Maybe I’m not understanding the question.

 

[OEMGUY0720]

Definitely could be wheel bearings... i fail state inspection for them last year, it wouldnt be surprising if the rest of them need doing.

As far as the transfer case bearings, what is the process of repairing those like?

TCase bearings replacement requires full pulldown. Try lifting the whole vehicle wheels up in the air, put the tcase shifter to Neutral (N) and your AT shift in Neutral as well and rotate the F&R drive shaft and see if the resistance is still too much. Factory spec will allow you to be able to spin the f/r tires when you turn the drive shafts.

 

[Import Driver]

Sounds normal to me. I feel like mine decelerates more than other vehicles when I lift off the skinny pedal.

I think the question I would ask at this point is - what is your fuel economy?

 

[filer5000]

Are you saying the truck slows down if you take your foot off the accelerator pedal? That’s normal. Maybe I’m not understanding the question.

Yeah, almost like a slight braking force. As I said to another user, I can go down a smaller sized hill and still not gain speed.

 

[MongooseGA]

Put the whole truck jack stands and turn the wheels one at a time.

 

[BamaHoo]

I second the question concerning mpg, and offer the observation that my 2000 LC seems to have more engine and drivetrain drag than other vehicles I drive, maybe it’s the full time 4WD and gearing. I drove my wife’s anemic Buick Enclave yesterday and it felt positively peppy compared to my 100 series. I tried to get a sense of it this morning but I’m dealing with a high idle now after some work this weekend so it wasn’t a good test. When I was idling in the 650-700 range (in drive) before this weekend I would describe it as having a pretty sluggish “coast” if that makes sense.

 

[filer5000]

Sounds normal to me. I feel like mine decelerates more than other vehicles when I lift off the skinny pedal.

I think the question I would ask at this point is - what is your fuel economy?

It definitely got rougher during the winter. There were some weeks where is would go between 8 and 10 MPG. As it starts to warm up, ive been getting pretty consistent 12.7MPG. I typically avoid idling my car for long periods of times since it makes my MPG go down.

My commute isn't very long, like 3 miles. Max speed is maybe 45-50.

 

[filer5000]

Put the whole truck jack stands and turn the wheels one at a time.

I said in my original post "Ive also tried spinning each wheel while in neutral and there seems to be a similar amount of resistance for all 4 wheels." Nothing seemed out of the ordinary.

 

[MongooseGA]

I said in my original post "Ive also tried spinning each wheel while in neutral and there seems to be a similar amount of resistance for all 4 wheels." Nothing seemed out of the ordinary.

Apologies, I must have glanced over it.

 

[filer5000]

Apologies, I must have glanced over it.

Yeah no worries. There was some resistance, they didnt spin forever but I didn't think it was super unusual.

 

[baltistyle]

It definitely got rougher during the winter. There were some weeks where is would go between 8 and 10 MPG. As it starts to warm up, ive been getting pretty consistent 12.7MPG. I typically avoid idling my car for long periods of times since it makes my MPG go down.

My commute isn't very long, like 3 miles. Max speed is maybe 45-50.

Driving in the cold for 3 miles likely didn’t even get your drivetrain warm. It’s my experience that these trucks drivetrains are very luggy when cold. These short trips are also the reason why your mile per gallon seems terrible. I happen to always use the engine for its engine breaking power. I’ve been driving V8 for a while and the bigger engines. Definitely help in acceleration without using the brake brakes. And as mentioned here all wheel-drive does add some resistance.