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Whats It mean when you start your car and It.

Tiny
ANONYMOUS
  • MEMBER
  • 2002 PONTIAC SUNFIRE
Whats It mean when you start your car and It starts to warm up and It starts surging really high and acts Like you have the foot on the gas pedal and you don't?
Monday, January 28th, 2013 AT 3:51 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,772 POSTS
Check for vacuum leaks and the IAC (idle air control valve)
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Monday, January 28th, 2013 AT 4:03 AM
Tiny
EYEBALLSDEEP
  • MEMBER
  • 12 POSTS
Idle air control valve. Also check the valve cover hose that goes to the air cleaner box. (Resinator duct) The nipple might have broken off, causing a vacuum leak. Is that an echo tech engine? My buddy has a cavalier same problem I solved it in 5 minutes. By threading in a 1/2" piece of pipe and reconnecting the hose. He said the car never ran that good and gets way better gas mileage. It was probably like that when he bought it. Lol
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Monday, January 28th, 2013 AT 4:45 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
The hose that goes from the valve cover to the air box is the crank case breather there is no vacuum coming off that hose to cause a high idle.
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Monday, January 28th, 2013 AT 4:23 PM

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