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#1
09-11-2007, 01:29 PM
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97 Ford Expedition O2 sensor
The engine light had been on about 4 weeks ago (I ran the tank almost to empty) and after filling the tank with gas (Chevron) the check engine light went off. I read that the check engine light can come on if the fuel tank gets too empty and abnormal vapor pressure is detected; filling the tank is suppose to clear that problem.
Now the check engine light is on again and after I took the truck in to check thecodes, 136 and 141 came back, which is suppose to be the bank 1 O2 sensor. Should I reset the ECM first to see if it clears the problem? I read that taking the positive terminal off the battery for 15 min. will reset the ECM. How hard is it to replace the sensor myself? I can do regular maintenence work (brakes, oil, radiator) but have never done this particular job. 
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#2
09-11-2007, 04:22 PM
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Re: 97 Ford Expedition O2 sensor
ok winterlike this is a honda forum and u have a ford.. but i reccomend not to take the battery off because one u reset ur obd2 and ecu which means ur ecu has to relearn ur drive cycle which means u might waste gas and if the code says o2 sensor then replace it with a new one just make sure u use a oxy sensor socket otherwise u can break ceramic in new o2 sensor and probably when u ran the truck on empty u will pick up particles on the bottom of tank and contaminate o2 sensor is like a big spark plug just have patience and u will have it changed in 30 mins tops... just make sure u change the right one too because there are mor than one.. hence bank one means left side of engine and bank two means right engine and then u have one after cat too so have fun and patience and ull be fine.. and u reset mil with code scanner
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#3
09-11-2007, 04:45 PM
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Re: 97 Ford Expedition O2 sensor
Lol, this is a first. Moved accordingly.
__________________
Oil leak? What oil leak? That puddle under the car is just sweat from all that horsepower. "How many NASCAR passes is that worth? 500?" (Schumacher passing Raikkonen) Emily is amazing, and she messed with my sig AGAIN! 
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#4
09-11-2007, 07:53 PM
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Re: 97 Ford Expedition O2 sensor
The codes you posted are not valid for your vehicle. You should have something like P0xxx or a P1xxx. Please have the code read again and post the exact code.
__________________
Being way2old is why I need help from younger minds The sooner you fall behind the more time you'll have to catch up.  HEY Y'ALL--READ THIS Here are some of our old vehicles for sale. 
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#5
09-15-2007, 04:00 PM
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Re: 97 Ford Expedition O2 sensor
Ok i am having the same problem with my 97 ford expedition also. I got it tested and the code that came back was PO133.
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#6
09-15-2007, 04:20 PM
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Re: 97 Ford Expedition O2 sensor
Quote:
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