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Oldsmobile Intrigue Problem Codes/TSBs
This seemed to have started right after I replaced all the plugs. I replaced #6 plug again, and subsequently swapped the ignition modules between both banks, expecting the misfire to appear at Cyl #1 if it was a bad coil or module.
I have also run three tankfuls of three different injector cleaners, one was by Prestone, the other two were Techron.
Any ideas? Has anyone seen this behavior and cured it? thanks.