Slow O2 at idle - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 12-02-2004, 07:52 PM   #1
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Default Slow O2 at idle

in park, the rpms rev up then come back down, rev up then come back down. And this happens pretty slow.
But as soon as i put it in drive the idle is smooth.
Any ideas what'* up with that?
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