Gs46046

A major throttle hesitation has developed in this car,that is so bad,sometimes when you put the pedal to the floor it doesnt want to accelerate at all. Feels like the car has a bout 25% power,it seems to shift very weird also,its like the car is trying to keep the rpms very low. Im not positive but it seems to occur mostly when the car is first started and still cold,or on very wet or humid days?it feels like the car is activating the traction control and the throttle plate is not opening all the way at wot?

Notice: already change spark plugs + A/T oil + filter

isfdude

iTrader: (11)

Check the air filter and also the mas air flow sensor.

Gs46046

Thanks for reply..
I changed the air filter + cleaning the MAF sensor.Stil the same.

ibidu1

iTrader: (1)

Any check engine light?

Have you tried removing the throttle body and cleaned it real good? Also a seafoam/top engine clean?

Gs46046

No check engine light..
I will try to clean the throttle body.
Thanks.

TRD_Power

Sounds almost like a throttle position sensor issue to me. I had something similar with my SC400 a while back. You check the fuel filter? Long stretch, but it very well could be something with the fuel delivery, and the filter is a good place to start with that. Best of luck. Keep us posted.

tcr101

iTrader: (2)

Who did the trans fluid? It sounds to me like the tranny fluid is low.

Gs46046

The problem solved finally by using lexus injector cleaner.
Thanks for all.

TRD_Power

Great to hear

ibidu1

iTrader: (1)

Glad you figured it out! Crap gas, you may want to replace your fuel filter aswell

isfdude

iTrader: (11)

Glad you fixed the problem. It seems that bottle works well on our cars.

mnjeepmale

Where is the fuel filter located on the GS460?

burny

under the back seat on Drivers side I believe

sha4000

iTrader: (1)

Magic in a bottle, hmmmm.....

Lukas99GS

I've never even seen that Lexus brand cleaner, did you buy that at the dealership?