rjpdwin

Hi All; My car is 97 ES300. In the process of cleaning the IAC valve, I disassembled the electronic coil part from the IAC body, when reassemble, I noticed the valve window (opening) has changed (larger), and the initial engine startup idle raise to 1500-2000 (cool engine). When it warned up, engine idle at 900 instead of 700. I have bleech out air in cooling system and driven the car a few days but the idle still high. I know the ECM was programmed to control/set idle to 700, therefore no manual idle adjust on the throtle body. My question is, 1. How to reset the IAC valve window? (My IAC window now open 0.050"). 2. On the IAC body, there is a small screw that was sealed up and can be turned with a small allen wrench. Is this the IAC window adjust screw? If so, how to reset the window? Thank you for helping.

If you go to Lexus.com and register they will send you one for free. It is the one that originally comes with the vehicle, and the maintenance guide also if you want it. I don't know how they do it, but you can order one a month if you want to. It takes about 2 weeks from the time you order until you get it in the mail. ← He's talking about the service manual, not owners manual book that comes with the car. I too need the Factory service manual for my 98LS. I bought the Mitchell’s, and let me forewarn you, your better off without it in most cases, other then mechanical. ← Thank you for your responses (all). I found service manual CDs on Ebay but don't believe they are any good. There are factory CDs out there... I would appreciated if someone can share it. Thanks

Does anyone has a factory service manual CD for year 2000 LS400 for sale ?