Question about 2003 Lexus RX 300

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RX300 Engine Stalls when I take foot off the gas pedal.

The car starts and runs fine as long as I keep my foot on the gas pedal. As soon as I my foot off the gas, the engine immediately dies. I tried letting the car sit for awhile and tried to start again over the past few hours, still the same result.

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  • Jack Iaria
    Jack Iaria May 11, 2010

    Can you drive it?

    Is it low on gas?

    Do you drive it till it's almost empty on gas?

  • paul white May 30, 2013

    no it's always full belongs to my mother in Law, very well maintained.

  • Anonymous Mar 14, 2014

    the engine will start and run as long as you keep foot on the gas pedal. what could be causing it to not continue running

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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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I went to Toyota to get my car inspected & a oil change.
The next day when I start my car it is blowing out thick white smoke and it also was hesitating when I started out driving it. It never did that before I took it to them. a week or so later my oil light comes on, I call them and tell them my oil light is on and I just got a oil change. I take it to them and they say they had to break down the engine to find out what the problem is. I let them do it now they say it is oil sludge. I have 58,000 miles and I only had the car for 4 years.

Posted on Apr 19, 2011

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