Car won't stay on if we aren't pressing he gas pedal.

2003 TOYOTA AVALON
119,000 MILES
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ANNETH
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  • 3 POSTS
My mom has a Toyota Avalon and it has problems staying on. It will turn on when I turn the key but it turns off the moment I let go of the gas pedal. Before, we used to warm up the car by holding the gas pedal for a few minutes till the car would warm up, and then when we let go of the gas pedal it would start. But this time it will not stay on if I let go of the gas pedal. If it does happen to stay on, the moment I use the brake to slow down, the car turns off. The radio and electric things stay on but not the engine. Thank you for you time.Anneth
Apr 21, 2012 at 12:00 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,990 POSTS
IAC valve is first thing to check/replace.
Apr 21, 2012 at 12:07 PM
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ANNETH
  • MEMBER
  • 3 POSTS
Thank you. I know nothing about cars, do you know how I should check this or if it costs a lot to get checked?
Apr 21, 2012 at 12:12 PM
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RASMATAZ
  • ✓Experienced Mechanic
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The IACV is on the throttle body assembly- dunno the cost of repair due to it varies with location-try having it clean out and see what happens-Is the check engine light coming on?
Apr 21, 2012 at 12:19 PM
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ANNETH
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The check engine light is on, the vcs/vsc light and another light. But those lights have been on since my dad took a loan out of the car. They put some sort of device on it while it's on loan.
Apr 21, 2012 at 12:31 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Have the computer scanned for codes-start here
Apr 21, 2012 at 12:48 PM
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