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Where are the O2 sensors located on a 1999 F150 4.6 and which one is most likely to fail?
Wiki User
∙ 14y ago
they are located on the exaust pipes you probobly have about four on the truck i changed mine on my 1999 5.4 and i had four of them two before converter two after converter about 50.00 bucks a pop on mine the one's before the converter was the bad one's but they will tell you exactly wich one it is at autozone or somewhere with a dionostic test good luck
Wiki User
∙ 14y ago
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O2 sensors are always located on the exhaust system.O2 sensors are always located on the exhaust system.
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