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MAF and O2 codes pulled

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1990 4wd Auto


going through the woes of a used car, I pulled the stored codes and got a 23 and 32 (abnormal voltage input from air flow sensor, Oxygen sensor inoperable)


I am not sure if these mean they are bad or what. Or if they are related (e.g. if the MAF goes out will the ECU turn the O2 sensor off, or vise-versa?)


I don't have a lot to spend so, I found the o2 sensor for 30 bucks on Ebay, I will replace that. Then I was going to us some MAF cleaner and some throttle body cleaner on their respective parts.


Any thoughts? Any one have experience with fixing those codes?

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