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Chronic knock sensor codes 850 1994

posted by  someone claiming to be steve@cbe on  Sat Sep 24 21:42 CST 2005 [RELATED]

there was a problem with c70's having knock sensor codes and poor performance due to retarted ignition timming as a result. this was traced back to faulty ecu's which had to be replaced as the fault was internal. it affected the earlier engine (such as yours) but i cant remember if the service bulletin mentioned 850's or not. however if you have checked the wiring and replaced the sensor then it probably is an ecu anyway. good luck.
steve.






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