Question about 2005 Saturn SC1

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Wont start when warm without pumpin gas, and engine revving to high

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A high rev problem is due to either carbon build up in the iac passage's not letting the iac close to normal idle or the iac is just bad and stuck in that position.

iac= idle air control solenoid

Inside the throttle body intake is a butterfly and just above that is a small opening that the iac uses to move air past the butterfly and this sometimes gets plugged with carbon build up so spray some carb cleaner down through the passage,and sometimes you have to remove the 4 bolts and take the throttle body off to clean them out.

Saturns are known for carbon problems,and they are hard on egr systems,I recommend using sea foam a couple times a year to help fight the carbon build up,just follow the direction and use it in the fuel and vaccum lines as directed but do it on a warm engine and let sit for a couple hours so the sea foam has time to loosen the carbon

Posted on May 31, 2010

  • brad_21_00 Apr 16, 2011

    I have a 99 saturn i had multiple starting issues, i changed the engine temp sensor for $14 and it fixed all my problems.. when i checked this out on the web i heard that the antifreeze eats the old style of sensor the nw one is made of different material...try this first its the cheapest

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Tip

Heating up your car


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