Thread: P0420 + hesitation/pinging under load question
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Old 04-23-2011, 08:00 PM
Stingray11 Stingray11 is offline
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Re: P0420 + hesitation/pinging under load question
One thing you can try without using a back pressure gauge is to remove the front O2's and see if the pinging and hesitation go away during a quick test drive.

David
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