failure to idle

2001 LEXUS IS 300
120,000 MILES • 6 CYL • FWD • AUTOMATIC
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KELVIN FOX
  • MEMBER
  • 1 POST
the car is hard to start and it has intermittent idling, and it also some times does not idle.
Apr 26, 2017 at 12:19 PM
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STRAILER
  • ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
Hello,

This sounds like classic vacuum leak which will cause the problems you ave described.

Please check out this guide.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please run this test and get back to us so we can continue helping you.

Cheers, Ken

Apr 29, 2017 at 2:49 PM
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