| Performance Engine mods, Chips, Filters, etc. | 
08-18-2009, 12:17 AM
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#1 (permalink)
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Join Date: Aug 2009 Location: Everett, WA Age: 23
Posts: 23
|  02 sensor...help
hey everybody, i need a question answered, hopefully somebody can help. ok so i took off my stock exhaust, put on headers/downpipe and a megan cat back system. the stock cable for the 02 sensor was about 6 inches short of reaching it. i got an extension for that cable from a buddy, but i havent connected it. i do have a check engine light goin off, which i knew would happen, but i was wondering....is driving without that 02 sensor in place going to cause any problems? i still have the primary sensor plugged in at the downpipe, its just the secondary thats unhooked.....so just wondering if its going to cause any damage if i run my car without that sensor...any help answering would be appreciated.
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08-18-2009, 12:20 AM
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#2 (permalink)
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Join Date: Aug 2009
Posts: 40
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running without the secondary o2 wont do a thing to your car, just that annoying cel
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08-18-2009, 12:34 AM
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#3 (permalink)
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Join Date: Aug 2009 Location: Everett, WA Age: 23
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ok. i had heard that from several people, i just wanted to get more opinions on it. appreciate it!
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08-20-2009, 12:51 PM
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#4 (permalink)
| | The old guy Full Access Member
Join Date: Jul 2009 Location: Plymouth, WI Age: 42
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Originally Posted by deepblack ss  running without the secondary o2 wont do a thing to your car, just that annoying cel | exactly
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08-20-2009, 01:11 PM
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#5 (permalink)
| | Supercharged L61 Full Access Member
Join Date: Jul 2009 Age: 22
Posts: 1,851
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yeah rear o2 only monitors the catalytic convertor, to make sure its still functioning properly...no harm or change will happend to engine performance if that sensor is not plugged in...only thing is a anoying check engine light, and not passing state emissions tests...
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08-20-2009, 01:56 PM
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#6 (permalink)
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Join Date: Jul 2009 Location: Calgary, Alberta Age: 26
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what everyone else said
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08-21-2009, 12:24 AM
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#7 (permalink)
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Join Date: Aug 2009 Location: Everett, WA Age: 23
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thx guys!
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11-16-2010, 06:49 PM
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#8 (permalink)
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Join Date: Nov 2010 Location: Glencoe MN Age: 35
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Hi everyone new here!! So say someone removed the cat and replaced it with a strait pipe. Of course it threw the dumby light, is there anything that can be put in to get the dumby light off so the remote start with work besides the cat. The second sensor was put in the new pipe. Thanks everyone!!!!
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11-16-2010, 07:36 PM
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#9 (permalink)
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Join Date: Jul 2009 Location: Calgary, Alberta Age: 26
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modifying spark plug fowlers for the o2 sensor has been known to work as it takes the sensor out of the direct path of exhaust and "fools" the sensor into thinking everything is fine. or you can get it tuned out.
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11-16-2010, 08:17 PM
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#10 (permalink)
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Join Date: Nov 2010 Location: Glencoe MN Age: 35
Posts: 5
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Im not much of a car guy, more sportbike LOL. Whats modifying spark plug flowers or how would you go about doing this. Then tuning it out would'nt that make the motor run lean. How this whole thing started was the flex part on the down pipe broke. I replaced it with a weld in ebay replacement, well as I was in there I thought well lets try and get some more gas milage and took the cat out. Not thinking I new it was going to through a dumby light but didnt think the dam remote start wouldnt work. So here I sit GLs ankles broke, its getting cold she wants her remote start. Ya I know dumb move!!!! Should have just replaced the broken part!!
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