Question about 2001 Nissan Sentra
Sensors do not always fix engines,if he replaced the o2 sensors,they most likely where not the problem,o2 sensors give messages of lean,or rich mixture ,most of the time.Have you tried to clean the upper intake,tuned it up with spark plugs(from a good auto parts,not auto zone ) boots for the coils,and a good fuel injection cleaner,like LUCAS fuel treatment,and new fuel ,and air filter,,?You may need to have the fuel injectors cleaned,with a machine,replace,and check all vacuums,check the mass air flow sensor also,these can all have an effect on the engine emmissions.
Posted on May 13, 2010
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Posted on Jan 02, 2017
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