Gx470 Look Out

[lordzatez]

have seen 4 gx's that the fly by wire (t-body motor) that tells the gx to go when you step on the gas have not responded all the time (will still sit at idle) just a thing to watch for. Peace from the ninja

[Allen Ayson]

can you rephrase that ?

give me another example

not sure what that means that the fly by wire tells you to step onto the gas

still sit at idle ???

hmmm

please explain another way to help me

thanks

al

[SW03ES]

The GX, alsong with most Lexuses employs a throttle by wire system. That is, it doesn't have a throttle cable that connects it to the throttle body like a normal car. Instead is uses a series of electronic sensors to remotely tell the throttle body to open, which allows air into the combustion chamber and makes the car go. Whenever you push the gas, and the engine revs, the system has told the throttle body to open up because you want to go.

What he's saying is the GX is prone to failures of that system, so the vehicle would idle fine, but when you'd hit the gas, nothing would happen.

[lordzatez]

TY For the example for me I have been so busy in Lexus land that Its been awhile since I've been able to pop on lexus guy

[Allen Ayson]

so does this mean its possible that since the fuel system is sensorized, their could be problems faced, like me getting avg 15 mpg on the freeway ? And i don't have a led foot ....

What do you have for your mpg for city/fwy

thanks

al

[skywagon]

14-15 is about all these things are getting. I have owned other v-8 lexus and they were in the 23-27 catagory, my last RX300 V-6 would make 23 and it was also all wheel drive.

[veegee]

Can a problem with the sensors lead to an acceleration of the car even though you didn't step on the gas?

[SW03ES]

In theory, although I've never heard of that problem on the GX.

As for the fuel mileage, a big V8 heavy truck like the GX470, 15-16mpg is pretty par for the course.

Other Lexus V8s (The cars, GS, LS and SC) of course are not only lighter, but far more aerodynamic. You can't really compare the fuel mileage. You can compare it to the LX, which is about the same.