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Old 04-05-2009, 02:59 PM   #1
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Default a/f gauge problems

What could cause my a/f gauge to go from the actual a/f ratio to full lean then back to actual a/f ratio slowly getting leaner until it finally just stays full lean?
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Old 04-05-2009, 03:04 PM   #2
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Wideband or no?
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Old 04-05-2009, 03:06 PM   #3
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AEM wideband
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Old 04-05-2009, 07:08 PM   #4
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heatsoaking could.
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Old 04-05-2009, 07:11 PM   #5
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Exhaust leak pre-sensor will cause lean readings at idle.
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