oxygen sensor prob
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New User
Joined: Nov 2005
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oxygen sensor prob
hi. got a 2001 sport trac. i recently had a check engine prob. i took it to the dealer's and they told me that the oxygen sensor had to be replaced. so i let them . i noticed a day later , the check engine light was on again.. what could be wrong? anyone there had anexperience like this? also , my four wheel is not engaging. could it have been caused by the check engine?
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Tuned
Joined: Sep 2003
Posts: 296
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From: north carolina
Juny,
We really need to know the codes that are being thrown before we can be much help. If you don't have a scanner, go to Autozone and they will scan it for you for free. Then, post back with the results.
We really need to know the codes that are being thrown before we can be much help. If you don't have a scanner, go to Autozone and they will scan it for you for free. Then, post back with the results.
Posting Guru
Joined: May 2002
Posts: 1,574
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From: Phoenix
You should go back and challenge the dealer. They diagnosed the problem and did not fix it. Some junior mechanic probably interpreted a code and assumed O2 sensor. But if the MAF sensor is dirty, it could cause a lean condition that the O2 sensors can not compensate for and a code like "too lean" could have occured. This is just one example but could be a dozen other things.
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New User
Joined: Nov 2005
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Hey guys thanks a lot for the info, I did challenge the dealers on the issue and they did find another oxygen sensor that was busted. They replaced the second sensor and the "check engine" light is off already. I was told that there are three oxygen sensors in my sport trac I am hoping the last one doesn't conk out like the rest in the near future. Thanks guys!
Tuned
Joined: Sep 2003
Posts: 296
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From: north carolina
Glad this worked out for you. Really shows how dealer techs can really screw up reputation wise, though. Codes for O2 sensors are pretty explicit as to which sensor is out of range, and then in your case, they replace the wrong one! Seems like they either didn't read the codes at all, or confused left bank, right bank, or upstream, downstream.
Posting Guru
Joined: May 2002
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From: Phoenix
Trending Topics
Posting Guru
Joined: Jul 2003
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From: Alvin, Texas.
I swear a 2001 model Vee-engine has FOUR O2 sensors, but glad you got things fixed by sticking to your guns!
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