No, Mr. Lemmywinks, No!!!
Join Date: Jun 2005
Location: Harriman, TN
If the plugs are oil-fouled, the sensors are likely to be also.
Unplug the rear ones; in my experience, those foul first, bringing down the front ones somehow.
If most of the codes except the "catalyst efficiency" go away, you might try new ones.
I'd fix the oil source first; o2 sensors are expensive as a wear item.
I've heard vaguely you can clean them up with a torch, but I've never actually heard from someone that that worked, so
Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.
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