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02 sensor low voltage??

1202 Views 2 Replies 2 Participants Last post by  sic 89 GT
I have an 89 GT normally my car starts on the first try and runs like a champ... But latley its dying out right after I start it in the morning I have been getting a check engine light during normal driving. I put the scanner on it today and it said the o2 sensors where not reading so I replaced them and now its giving me codes 41 and 91 o2 sensor low voltage/ lean... I checked the wires goint to the o2 sensors and they looked good (nothing out of normal) can anyone tell me what could cause low voltage to them???
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Clean your MAF sensor first.....instruction in the Tech Section....if dirty the ECM can, can?, misread the voltage supplied by the O2 sensors.
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