Thread: 94 E320 Failed Emissions Test
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  #10  
Old 08-31-2004, 11:38 PM
manny manny is offline
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Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
I would be willing to bet, the fluctuation in idle speed ( 500 - 700 rpm ) is the culprit of your failure.
At 15 mph, you're barely above idle.
Next clue would be " the constant noise from the throttle valve ".
Is it trying to compensate for something ?
Hell, Im tired & going to bed.
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