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Thread: "Right" WBO2 sensor not working correctly.

  1. #1

    Default "Right" WBO2 sensor not working correctly.

    Just updated from a HP to a Dominator EFI. Switched to dual NTK WBO2 sensors. The "right" WBO2 at startup, seems to read correct, close to what the left reads, then starts reading lean until it stops at 27.5. I have swapped sensors from side to side, and swapped harnesses side to side. The left always reads correct, with either sensor, either harness and either bank. I've added fuel and taken away fuel and the WBO2 sensor follows what I do. The right side never moves off 27.5. Where do I go from here to try and find the cause of this problem? Thanks.

  2. #2
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    Contact Holley Tech Service (LINK).
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    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, R134a A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

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