Check engine light
 

I have a 99 4runner SR5 V6 4WD with the check engine light on, the OBD II reader show a code of P0171, I have the fuel injector cleaned, and change the one O2 sensor before the catalytic converter but the light come back again. Anybody have any ideas whats wrong. The car ran fine, no problem at all except the annoying light.

Check engine light
 

could be a faulty product. not likely but a chance. could be an air temp sensor or even egr. u will have to be more specific with the code. has it dropped in milage or power. see if u notice these things.<IMG src=smileys/smiley16.gif border="0"></P>


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Check engine light
 

mine did that and i kept running test and nothing was wrong with it i think toyota wireing has a mind of its own anyways so i got fed up with it and took the light out but thats just me but i know some times if you just take your truck to auto zone or places like that all they can do it plug in to it a read the codes one code could mean many codes i found that out the hard way if you havnt took it to a pro then you should i think it will cost around 80 bucks well thats how much mine did but they can tell what is wrong with it pretty fast</P>


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