4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

quick answer needed!

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Old Oct 18, 2009 | 12:35 PM
  #1  
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got code p2270 on a 04 GT, and was going to get a O2 sensor. Advanced auto tells me a straight up price for Bosch, and Autozone says there are diff O2's for precat and aftercat O2's, something about different plugs.

this true? i thought O2's were O2's but specific to each car


let me know ASAP as i need to go pick one up and put it in tonight before car gets inspected tomorrow! lol


thanks guys!
Old Oct 18, 2009 | 01:45 PM
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All four sensors are the same, however the cable lengths are different (there are 3 different lengths IIRC). The connectors are basically the same however the key tab is differently located for left and right. You can clip the key out, to make a "universal fit" connector, with diagonal cutters, box knife (watch those fingers), or a dremel tool, etc.

You wouldn't have long tube headers, would you?
Old Oct 18, 2009 | 01:52 PM
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nope i dont, i just got back from getting them, i guess we will see if they fit when i start to throw them in

ill see if they are long enough before i take the old ones out, or just splice in some wires to make them longer.
Old Oct 18, 2009 | 03:15 PM
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I asked because P2270 is usually associated with LTs, caused by the relocation of the front sensors further downstream than stock. This causes the O2 sensors to not respond in the amount of time expected by the PCM, the fix is to increase then values in the O2 Transport Delay table.
Old Oct 18, 2009 | 03:46 PM
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ohh ok, well got back from putting them in, i got 2 and replaced both downstream sensors. time will tell if the code comes back.

thanks cliff
Old Oct 18, 2009 | 05:59 PM
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Originally Posted by smitty2919
ohh ok, well got back from putting them in, i got 2 and replaced both downstream sensors. time will tell if the code comes back.

thanks cliff
As the sensors age slow response is one sign that they are on the way out--usually it's the output voltage dropping but I have seen them slow down first...
Old Oct 18, 2009 | 06:05 PM
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Originally Posted by cliffyk
I asked because P2270 is usually associated with LTs, caused by the relocation of the front sensors further downstream than stock. This causes the O2 sensors to not respond in the amount of time expected by the PCM, the fix is to increase then values in the O2 Transport Delay table.
I actually had this problem with FRPP shorty headers a few years ago
Old Oct 19, 2009 | 05:43 AM
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Originally Posted by cliffyk
As the sensors age slow response is one sign that they are on the way out--usually it's the output voltage dropping but I have seen them slow down first...
that could be my problem, it would take a couple days or drives to set the light off. car only has 32K mi on it but i replaed both downstreams anyhow.

getting it inspected today so i need it to stay off ahah. MA sucks with safety and emsissions....booooo
Old Oct 19, 2009 | 09:36 AM
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Originally Posted by smitty2919
that could be my problem, it would take a couple days or drives to set the light off. car only has 32K mi on it but i replaed both downstreams anyhow.

getting it inspected today so i need it to stay off ahah. MA sucks with safety and emsissions....booooo
I got out of there over 16 years ago after being born in and living in Plymouth for 45 years--to much government for me...
Old Oct 19, 2009 | 10:05 AM
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Originally Posted by cliffyk
I got out of there over 16 years ago after being born in and living in Plymouth for 45 years--to much government for me...
ha lucky. My Aunt and Uncle live in Plymouth actually. In a couple of years I'll be moving to KY to the girlfriend/future wife....no inspections there! lol (but still snow...ugh)
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