11 people reported this problem
Power steering "growling", leaks around P/S pump and white smoke when car is first started in morning. on Lexus LS400
If your power steering pump is making noises or leaking, get it fixed ASAP or you will likely be replacing your alternator too. The alternator is located right below the P/S pump and if fluid drips into it it will short out the alternator, this has been occured many times. Also, if you get a puff of white smoke in the morning it may be a bad speed sensitive steering solenoid, which screws into the power steering pump and has a vacuum line running to it. Either order and replace the solenoid/switch (about $100 online) or it can be plugged with no loss of function in the steering also. *DO THIS AT YOUR OWN RISK*, I just plugged mine after others online reported it would work OK and it seems to steer fine.
1994 Lexus LS400 135,607 mi, Visitor
Power steering pump is using fluid daily and no leaks white smoke when crank up
It doesn't so much growl as it does whine. happens only in the winter and is the loudest thing on my car. No clue how to fix it and I don't want to keep replacing both my PS pump and ALT
1993 Lexus LS400 180,000 mi, Visitor
I actually had to replace the alternator about 2-months ago. Now I know, because the mechanic advised to replace the steering pump about 18 months earlier, but I didn't fix it. I normally don't write reviews or post anything, but seems the guys here know what they're talking about. I respect you.. Thanks for the good, and honest advice.
1994 Lexus LS400 131,000 mi, Visitor
Power stering making noise and smokes like hell on start up
1991 Lexus LS400 144,000 mi, Visitor
Still waiting (and saving)
Air control valve leaking