Idle rpm for California smog test
12-19-2008, 02:27 AM
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Idle rpm for California smog test Does anyone know the allowed idle rpm for California smog test? I want to set it as high as I can with out going over the limit which will cause a fail. Thank you for any help.
12-19-2008, 10:54 AM
#3
From my last test, they only do 15 MPH and 25 MPH tailpipe testing. Setting your idle as high as possible is not going to do anything to pass the test, just make them think you have a vacuum leak. Also the ECM will control the idle rpm to the programmed value, if you alter the set screw then it will throw a TPS code, which results in a failed test.
12-19-2008, 11:44 AM
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12-19-2008, 12:53 PM
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12-19-2008, 12:57 PM
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From my last test, they only do 15 MPH and 25 MPH tailpipe testing. Setting your idle as high as possible is not going to do anything to pass the test, just make them think you have a vacuum leak. Also the ECM will control the idle rpm to the programmed value, if you alter the set screw then it will throw a TPS code, which results in a failed test.
