tchamber

Hey all, its me, back again for more help.</P>


I recently bought an OBD scanner, and all KOEO and KOER tests show that I have a "Lack of heated O2, indicating lean mixture" or some such rot. Does this mean I have a bad sensor, or that I have bad or dirty injectors?</P>


PS, I know my MAF is good</P>

vfast

bad 02...clean it and try it if still same reading buy a new set

mdvaldosta

Yep what he said, more than likely you will have to replace it because that usually means that the self-heating element isnt getting the sensor hot enough to get the car into closed loop fast enough, but it could be carbon buildup on it too though</P>

vfast

your learnin*L*

tchamber

Thanks guys, its nice when all you veteran Stang owners reply so quickly and with the same answer.

tchamber

Hey, one more thing, could this be why when I first start my car, and while its cold it is hesitant to accellerate? It feels like an old carbed car that wants to warm up before it moves.

vfast

could be...I think the 02 sensor are like 40 bucks @ auto zone

vfast

could be...I think the 02 sensor are like 40 bucks @ auto zone

mdvaldosta

</P>


Depends on how long after its been running. The pre-OBDII cars usually go into closed loop after a few minutes, rarelybefore 1 minute. Until the car is in closed loop the O2 sensors arent even being used by the ECU. Now, if youve been driving for a few minutes and its still hesitant it could be the ECU is in closed loop but cant get an accurate O2 reading because the O2 sensers arent up to operating temp yet and its getting false signals from them... like a lein condition... which would cause the computer to add more fuel, running rich and studdering</P>