IS300 Acceleration Issue

[Gebo]

My 01 IS300 has started to act funny. It won't move unless I press the accelerator pedal passed half way. Then it will move but not fast.
This is more than a throttle body cleaning. Someone said something about a wire on the back of the accelerator pedal??? Where to start?

 

[Bud_One]

Is this a drive by wire system or a does it have a physical throttle cable ?

Sounds like a throttle pedal position sensor issue if it's a drive by wire set up.

 

[Gebo]

Is this a drive by wire system or a does it have a physical throttle cable ?

Sounds like a throttle pedal position sensor issue if it's a drive by wire set up.

Couldn’t tell you. P1211 code

 

[6.7 CTD]

It has a throttle cable. Based on that code you’re headed in the right direction in terms of the accelerator pedal. Possibly a bad accelerator pedal position sensor?

 

[mk378]

To check the cable have someone press the gas pedal (engine off) while you are under the hood to look at how far the throttle plate moves. It is not a complicated system and the most likely problem is the cable itself.

 

[Gebo]

Couldn’t tell you. P1211 code

oops it's p1121

 

[BC1]

The car will not move or the engine will not rev up? If it will not move, I would start by looking at the tranny dipstick.

 

[Gebo]

The car will not move or the engine will not rev up? If it will not move, I would start by looking at the tranny dipstick.

The car will not move or the engine will not rev up? If it will not move, I would start by looking at the tranny dipstick.

The car will move. You just gotta get the accelerator past half way. I would describe it as “limp mode”. I fixed it temporarily by disconnecting the battery. But I’m about 30 miles if came back.

I’m thinking it’s…

 

[BC1]

Seems some people are resoldering cracked joints on those.

 

[Gebo]

Seems some people are resoldering cracked joints on those.

Thank you. I just can’t go that way. LOL.

 

[GR_CoB]

Seems some people are resoldering cracked joints on those.

This is the solution. I had to do it on four 2JZ powered vehicles.

 

[Marcozi]

The intertubes seem to point to a coolant flow issue.

 

[Gebo]

It was that part. Man, I had to take off so much stuff get to it. It’s fixed.