2000 Throttle Body Question

[matchinthebox]

I recently bought a 2000 Land Cruiser and have been working through some required maintenance on "the tank". Right now I'm doing the timing belt and a deeper inspection of the engine.

I came across something I've never seen, but then again my normal engine experience is with carbureted and/or early 90's engines.

On the throttle body of my 2000, I see a few things
1.) The cable has some slack in it.
2.) The throttle body itself doesn't seem to go to WOT when I fully press on the pedal, or manually turn the mechanism.
3.) When I manually open the throttle door, it makes a metallic sound.

Here is a video to help understand what I'm seeing....

Is all this normal?

Thank you for the help!
Matt

 

[ton504]

I don't know much about it but I think the throttle cable turns a position sensor. Then the ecu tells the motor on the right(when facing the engine) to open the throttle body.

If that motor takes a s***, that small crack when wot is your failsafe.

Since you moved the throttle plate, I would clean the opening and plate. Also disconnect the battey to reset memory(idle) also.

 

[AimCOtaco]

The plate is driven by a motor with clutch normally. I would avoid moving it by hand when powered up. There are at least 3 different codes you can get for the assembly; APPS, TPS, or Motor/Clutch. All can fail but a failure of one can cause one of the related codes to pop.

I would clean it all up and run it and see if it produces any error codes. There are many threads here about TB related problems.

 

[matchinthebox]

Thanks guys. Appreciate the help!

 

[OregonLC]

Through at least MY 2000, the 100 has an almost fully redundant throttle system. Primary is APPS/TPS where the APPS senses input and electronically drives the TB. Should the electronics fail, the cable can modulate throttle all by itself mechanically, although only in the last third or so of pedal travel. If you have a code reader (or something like Torque or TechStream) where you can easily reset codes, try it yourself. Unplug both APPS and TPS and try to drive it around. When you press the throttle it will feel like nothing is happening and you'll hit a soft stop somewhere past 1/2 pedal travel. Keep pushing and you'll overcome the spring and manually open the TB. It's a little tricky to modulate but you can definitely get around, even on hills. It's one advantage of the older 100's; you can't be stranded by failed TBW.

 

[YardPig]

Great info. Who would have thought that full throttle in a 100 could help you.