I have a Lexus es300 2001. I have a problem

Question edited for full 'year make model'.
Question moved to sub category.

If it is idling, the injectors are working fine and spraying fuel. Did you check for DTC trouble codes? You need the dealership, or a good auto-electrician with a $5,000 scan tool computer.

A video and some ideas.

https://www.google.com/search?q=Lexus+2008+LS+460.+It+starts+and+idles%2C+but+dies+as+soon+as+I+press+throttle

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Test battery with load tester. Check for electrical short.

you should first have the alternator tested. any auto parts store will test your alternator and battery for free. Also you should remove the battery cables and clean them with a battery terminal cleaner. sometimes a loose or dirty connection at the cables will cause the battery not to charge properly.

Can be loose battery connection,or weak starter motor/solenoid.Sometimes new battery even comes weak/faulty.Get the battery bench tested at local car garage.

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It can be the issue with weak battery or faulty battery or if battery is ok,then its faulty starter causing the issue.

From start to end troubleshooting these problem i suggest you to click the link below and follow its procedure:-----

What to Do When Car Turns Over But Won't Start?

http://technoanswers.blogspot.com/2012/11/what-to-do-when-car-turns-over-but-wont.html

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Car starting issues?

http://technoanswers.blogspot.in/2012/02/car-starting-issues.html

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Car Starting Problems

http://whoisbyme.blogspot.in/2012/06/car-starting-problems.html

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1991 Toyota Trecel: Engine Starts fine but dies when gets Warm?

http://whatisbyme.blogspot.in/2012/05/1991-toyota-trecel-engine-starts-fine.html

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1994 Toyota Pickup: Starts fine but dies in few seconds?

http://howtobyme.blogspot.in/2012/05/1994-toyota-pickup-starts-fine-but-dies.html

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1999 Chrysler Cirrus: 8 IGN Fuel Starter Fuse Blows?

http://whatisbyme.blogspot.in/2012/06/1999-chrysler-cirrus-8-ign-fuel-starter.html

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2001 Toyota Camry: No start After replacing Battery?

http://whatisbyme.blogspot.in/2012/05/2001-toyota-camry-no-start-after.html

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1989 Toyota Pickup Truck: Turns over but not start?

http://whatisbyme.blogspot.in/2012/05/1989-toyota-pickup-truck-turns-over-but.html

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Car dead and will not Start?

http://whatisbyme.blogspot.in/2012/05/car-dead-and-will-not-start.html

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1995 Lexus LS400: Running Hot?

http://whatisbyme.blogspot.in/2012/05/1995-lexus-ls400-running-hot.html

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2001 Toyota Prius will not start?

http://whatisbyme.blogspot.in/2012/05/2001-toyota-prius-will-not-start.html

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1996 Jeep Grand Cherokee: Engine will not start?

http://repairhelpcenter.blogspot.in/2012/06/1996-jeep-grand-cherokee-engine-will.html

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Mitsubishi will not start

http://www.howtorepairguide.com

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These will help.

Thanks.

i had same problem. it was the starter.

Check your Intake air sensor.

Dirty or lose conection on the starter or altinator.Remove them clean and replace.Hope that was helpfull

There is another post that I answered that is the same thing. You need to clean your IACV. See other post for details!

This is a bad alternator, if u are very skilled then u should have no problem, u just need common hand tools, remember to disconnect Battery before staring working, take a picture before u start work of bolts and wiring to alt..