Juelz21

I have a 98 Ls400 and for a while its been leaking power steering fluid. I can smell it getting burned off sometimes aswell. My alternator hasnt had any issues so i dont think its dripping on to it. My question is does the 98 model of a Power Steering control valve? I know by reading the forums that thats usually the bad part but i am yet to read about it on the 98+ models, so i want to confirm its actually there before i buy it. Thanks for the help.

bradland

IIRC the Air Control Valve appeared circa 1994 so yes 98's def have it.

Scraape

yes, they have one. make sure it's tight or it'll **** ATF everywhere

you can delete it, or opt for the metal version (the plastic ones aren't as durable, ask me how i know.)

17630-16040 https://www.ebay.com/itm/Toyota-Lexu...M/152971694827

Sin1UZFE

What would you use to delete it

JonnyO78

To delete you use a basic M14-1.50 oil plug. I used this one from NAPA.

Sin1UZFE

Thanks, what did you do with the vacuum lines?

JonnyO78

Plug them on the plenum and intake. I have seen a few people route a hose from the plenum to the intake to increase the RPM slightly, but it's unnecessary, and there are better ways to adjust idle RPM if that's one's goal.

Sin1UZFE

I don't know what plenum is....

JonnyO78

The air box over the RH valve cover after the air sensor. This is from my 1994. The plenum, or air box, is circled. The yellow blob on the left (RH) is a screw I plugged the broken stem with. The yellow on the right is a short bit of the vacuum hose with a bolt stuck in it. And you've deleted your power steering air control valve.

Sin1UZFE

Sweet thanks, it looks very different from my 99 tho

bradland

Your 99 will look like this...
Follow the vacuum lines and plug where they terminate.

Sin1UZFE

Gotcha so basically this....

Tappy

This a link that will show you the diagram above. LINK VACUUM PIPING