Question about 1991 Lexus LS 400
Posted by Anonymous on
Try changing the fuel filter? I would also try reading any codes that may have set. Parts stores like Autozone will do that for you for free.
Posted on May 12, 2017
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Posted on Jan 02, 2017
The Idle Air Control (IAC) valve is clogged. This part feeds air to the engine at start-up and idle when the throttle bodies are closed. I removed the throttle body assembly from my 2001 RX300 and separated it from the IAC. After a good cleaning with throttle body cleaner the IAC was good as new. I later decided to replace it during routine maintenance. You can pick up a brand new IAC on eBay (genuine Lexus/Toyota part). The dealer will want upwards of $400.00 for a 45 minute job (all you need are basis hand tools).
Posted on Mar 23, 2009
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