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Old 05-28-2001, 12:37 PM
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I just traded an Infiniti that did the same thing. After replacing O2 sensors and running up a huge bill searching for the culprit, they finally found small pin-holes in the EGR tubes. The heat and corrosion from the exhaust gas was the cause. I had previously had the EGR valve replaced for the same symptoms. Good luck!
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