Question about 2002 Cadillac Deville

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Engine light is on car is running rough

Under hood loud hissing noise like a hose is lose when im at a complete stop car is jumping realy bad

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When car is running spray some starting fluide on all the hoses and throttle body to find leak the car will rev up when spray is sucked in leak. good luck cj

Posted on May 14, 2010

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I have a 2005 Pontiac that makes a hissing noise underneath the car. you can turn the car ignition on without fully starting car and it still makes hissing noise then stops.HELP!!!!!


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