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Can My O2 Sensor be Bad?? 900 1994

posted by  Townshend Act on  Mon Jan 13 05:51 CST 2014
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last visit: Tue Oct 7 22:44 CST 2014
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'94 945 Turbo. B230FT w/ E.G.R.

Can an O2 sensor be bad or poorly performing and NOT cause a fault code or Check Engine light in the OBD I system?

Still trying to track down cause of high 1800 RPM idle after W.O.T. driving.

T.P.S., E.C.T., I.C.V. and E.C.U. all replaced with known good or new parts and condition still exists. Throttle body and T.P.S. is spotlessly clean and adjusted. No vacuum leaks whatsoever. Injectors removed, cleaned and resealed. New fuel filter.

All new secondary ignition parts. Runs great, just high idles after W.O.T.

If I shut car down and immediately re-start, idle is normal






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New Can My O2 Sensor be Bad?? [900][1994]
posted by  Townshend Act subscriber  on Mon Jan 13 05:51 CST 2014 >


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