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Catalytic converter cleaning? 850 1994

posted by  someone claiming to be Brian Bertram on  Fri Mar 30 02:44 CST 2001 [RELATED]

I presently am receiving two error codes, 4-3-5 and 4-4-3, one which indicates that the O2 sensor is slow to respond, and the second, that the catalytic converter efficiency is poor. I recently experienced flooding problems during extreme cold conditions, and thus the above problems began. The 850 Turbo presently has 200,000 km thus the front O2 sensor definitely needs replacement, but would you suggest a gas line detergent to clean the catalytic converter? If so, can the cleaning product harm any other fule system components in the process?

Thanks...







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    Re: Catalytic converter cleaning? 850 1994

    posted by  someone claiming to be Rich K. Fairfax, VA on  Fri Mar 30 14:07 CST 2001 [RELATED]

    Nothing you can do to the catayltic converter, but the good news is there is more than likely nothing wrong with the converter. Replace the O2 sensor, clear your codes, and then drive the car. Very often when O2 sensor codes are set, other codes relating to the cataylic converter are set, the O2 sensor is not working correctly (first code set) then the Catayltic converter (ususally the rear O2 sensor determines this) says things are not working correctly, the converter should have burned up more hydrocarbons than the rear sensor detected, so a code is set for the cat. The real cause being the front O2 sensor started the whole problem rolling, however ignoring the front sensor code long enough will cause problems.







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    Re: Catalytic converter cleaning? 850 1994

    posted by  someone claiming to be Charles Linden on  Fri Mar 30 02:58 CST 2001 [RELATED]

    Try running the car hard for a few miniutes. Think 3500 rpm or more. Then replace the front O2. That may solve your problem.






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