Lexus Troubleshooting Questions? Ask a Lexus Expert
Hello, my name is Bobby. Thank you for the question. Most of the time this is either an air flow meter issue or more commonly the throttle position sensor. Most of the time it is the throttle sensor. If you have the right scan tool you can monitor this and other times you can do it with a digital multi meter. It can be many other things, but these are the most common. Please let me know if you need more help.
Here is the instructions to install it. The clearance should be .16" of an inch.
Does your scan tool read live engine data?