Took Cats Out, Check Engine Light
06-05-2009, 01:47 AM
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Took Cats Out, Check Engine Light
Hello everyone, My name is Casey and I am from Louisiana. I have a 2004 F150, 5.4L and I took the cats out of my truck
.... do i regret it....yesss
I knew the check engine light would definately come on because of the O2 sensors on the back 2 cats out of the 4 total I took off. I was wondering if there is a way to turn that off? The shop who did it, plugged this computer under my stearing column and it turned off for a while, but it came back on. Is there a way to get it off for good or any options? I tried to just ignore it(
) but that didnt work. Im currently covering it up with a piece of electrical tape (rigged) because it is always there in my face, any tips or info would be appreciated.
Thank you.
-Casey
.... do i regret it....yesss I knew the check engine light would definately come on because of the O2 sensors on the back 2 cats out of the 4 total I took off. I was wondering if there is a way to turn that off? The shop who did it, plugged this computer under my stearing column and it turned off for a while, but it came back on. Is there a way to get it off for good or any options? I tried to just ignore it() but that didnt work. Im currently covering it up with a piece of electrical tape (rigged) because it is always there in my face, any tips or info would be appreciated.Thank you.
-Casey
06-05-2009, 01:59 AM
#2
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Front 02 sensors=Critical to have installed
Rear 02 sensors they are people making 02 simulators. This can be done at home with a lot of research and a good understanding of electricity and more specifically the F-150s engines electrical system. The easy way is to search for a company that sells 02 simulators for our trucks or find a company that will develop them.
Rear 02 sensors they are people making 02 simulators. This can be done at home with a lot of research and a good understanding of electricity and more specifically the F-150s engines electrical system. The easy way is to search for a company that sells 02 simulators for our trucks or find a company that will develop them.
06-05-2009, 02:04 AM
#3
i'm not sure if a tune can shut off the light or not, you could just leave it and take apart the cluster and put a tiny piece of tape over the back of the applique and block the light off. also i bet you will lose mpg due to the CEL
06-05-2009, 02:11 AM
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yeah, im askin around trying to gather some input. I mean the cats are all off and obviously the emissions or O2 sensor is detecting that so the light is on on the dash. I just wanna turn that light off cuz the tape wont hide it forever ya know. Someone will see it eventually and ask about it or if I ever trade it in or sell it, that will raise eyebrows. Not to mention the noise already causes suspicion...
Last edited by caseindaplace; 06-05-2009 at 02:13 AM.
06-05-2009, 02:16 AM
#5
they will never know if the CEL is taped over, but if something ever really is wrong you won't know and could put you in a bad spot. put it back to stock or put in high flow cats and you should be good.
06-05-2009, 02:22 AM
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yeah true....i guess i should put something back on, maybe ill go to the shop that took them off and talk to them. Maybe I can get some High flow ones and hope they weld it back right to where it all matches up and reads right
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06-05-2009, 10:28 AM
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I did the same thing with my truck. I cut the back 2 cats off and my truck was throwing codes. The sct SF3 programmer lets you turn the rear 2 O2 sensors off. It will make them stay off and you will have more power.