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High idle then shut off?

Tiny
KKNGMCOG
  • MEMBER
  • 2002 OLDSMOBILE ALERO
  • 2.3L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 222,000 MILES
I noticed that my security light and battery light came on at the same time. I took the car home. I went to leave a few hours later. When I started the car up the idle went straight up to 4,000 RPMs for about 30 seconds and then it started to sputter and then it died. Now it won't start. The battery is now dead from trying to get it to start. Please help me as my job is on the line!
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Thursday, June 13th, 2024 AT 3:45 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 45,347 POSTS
First you need to charge the battery back up, here is a guide to help:

https://www.2carpros.com/articles/how-to-charge-your-car-battery

After that try to start the engine by holding your foot on the gas pedal slightly, if the engine starts it sounds like the IAC valve needs to be replaced. I would service the throttle bore at the same time.

This guide can help:

https://www.2carpros.com/articles/throttle-actuator-service

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Thursday, June 13th, 2024 AT 8:22 AM

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