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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.

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  #1  
Old Mon, May 16th, 2011, 02:10 AM
mwood1986 mwood1986 is offline
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Default No cat tunes and secondary sensors
Well I had my cats tuned out cause one of em blew up on me when I had a miss fire issue from the aftermarket coils I had on.

I was wondering am I able to completely remove the second sensors now without an issue?
I'm only asking cause before I had it tuned out I tried the gotts o2 mod and the o2 extenders which basically fried the one o2 sensor cause it didn't ground properly, I'm thinkin. So now I get these codes for the inductance and heating element in the sensor which make my truck run cold. (until I clear them of course )
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Old Wed, May 18th, 2011, 06:24 PM
jmt0645 jmt0645 is offline
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Quote:
Originally Posted by mwood1986 View Post
Well I had my cats tuned out cause one of em blew up on me when I had a miss fire issue from the aftermarket coils I had on.

I was wondering am I able to completely remove the second sensors now without an issue?
I'm only asking cause before I had it tuned out I tried the gotts o2 mod and the o2 extenders which basically fried the one o2 sensor cause it didn't ground properly, I'm thinkin. So now I get these codes for the inductance and heating element in the sensor which make my truck run cold. (until I clear them of course )
ran into this myself with my offroad y-pipe, even with the rear sensors "tuned out" they still must be plugged into the harness so the PCM atleast can "see" they are preset even though it doesn't use them
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Old Thu, May 19th, 2011, 07:19 AM
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What he said.
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Old Sun, June 5th, 2011, 10:41 PM
mwood1986 mwood1986 is offline
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Yea sorry for being so slow to respond, I'm horrible at remembering to follow up on things.
I found this out the day after when I tried disconnecting it, so I ordered a new Motorcraft sensor from rock auto for like $36.
Thanks for the responses though!
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Old Wed, July 6th, 2011, 10:51 PM
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DarrenWS6 DarrenWS6 is offline
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Rear O2 sensors are not turned off on catalyst emission monitoring from custom tunes are they? Is that more of a special request while ordering tune thing? Or is it possible to de-activate them from reading with the Gryphon?
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Old Thu, July 7th, 2011, 09:20 AM
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Originally Posted by DarrenWS6 View Post
Rear O2 sensors are not turned off on catalyst emission monitoring from custom tunes are they? Is that more of a special request while ordering tune thing? Or is it possible to de-activate them from reading with the Gryphon?
Upon special request Bill can turn them off when the tunes are written......

Otherwise a person can go with sct and turn them off with the hand held programmer...
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