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My girlfriend just got a 2004 base mustang V6. Her brother bought it at the auction for an unbelievable price. So what we have tried to do is of course the basic tune up. We were getting the check engine light and the codes came back as the o2's. Both upper and lower and both sides. Damn all 4?? Anyways, my question is this, is there any suggestions, asides from dropping both exhausts, to access the upper o2 on the passenger side? We can get the other 3, but that one is just in the worst possible spot. Any suggestions would be appreciated!
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Changing the o2 sensors
