HRT

On my 2003 RX300 when I accelerate the rearend pulls to the left (Drivers side) as if I am fish tailing. not sure what is wrong, changed bushing on stabilizer bar, replaced stabalizer bar links. replaced control arms on Passger side last year and in process of replacing Driver's side now. What else could it be wrong?

daddykay24

I had a car that did this. Would you believe it was the tire pressure?

HRT

I thought that might be it, Just purchased brand new tires last week and issue is still going on.

salimshah

AWD or FWD?

Salim

HRT

it is an AWD

bgross88

Something else to consider, depending on your tires. I have an Altima (in addition to my Lexus) which needs unidirectional tires. My installer put one on backwards one time...it did the exact same thing you are describing until I took it back.

Just a thought

trhs75

Something with the stability system, maybe? Just a thought.

HRT

Replaced Stabilzer bar Bushings, Stabilizer link pins, control arms on both sides. Just running out of things to replace.

Z07

Did the alignment shop give you a printout of the final numbers after the four wheel alignment?

mshumack

I'm not up on the construction of the lexus AWD rear differential, but if it is designed like a conventional rear wheel drive car, you could have a broken or striped-spline on the axle shaft to the wheel. So when you accelerate all the power is going to one rear wheel instead of split between the two. If it where FWD only, the car wouldn't move, but with AWD you may be masking the problem.

Try jacking both rear wheel off the ground and then turn one wheel by hand (chock the front tires and put transmission in neutral). if you turn one wheel the other side should aslo turn (in opposite direction for "open" differential, or in same direction for "limited slip" differential).

Z07

2003 AWD is open diff. IIRC 2001 was the last year of the posi.

mshumack

Okay. rethinking this - it is not a broken shaft because if it was (with an open diff) the drive shaft would turn the yoke (pinion and ring gear) but the spider gears would just rotate inside the carrier instead of turning the axle shaft (remember the description of an open differential in the movie My Cousin Vinny - "one wheel spins and the other just sits there".) If you had a broken axle, that would be the shaft turning (one with least resistance) and the other wheel with the good shaft would just sit there.