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Old 02-02-2012, 11:01 PM   #1
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Check engine light

My check engine light was on because i didnt have o2 sensors, i bought a new CFM high flow cat and put bosch o2 sensors in it and cleared the codes with a code reader. The light came back on not too long after doin all that but isnt giving any codes. Tried to clear the light again and it just keeps comin back on without any codes, does anyone know whats goin on? Thanks for the help


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Old 02-02-2012, 11:15 PM   #2
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unplug your neg for a few mins then try again.
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Old 02-02-2012, 11:18 PM   #3
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Ok ill try that :) thanks again
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Old 02-03-2012, 12:44 AM   #4
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maybe a dumb question but light is on with the engine running because the light selftests with the key on but the engine off
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Old 02-03-2012, 01:16 AM   #5
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If I remember right, the SVT doesn't like Bosch O2 sensors
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Old 02-03-2012, 09:05 AM   #6
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Yes the engine is on. And thats what ive heard bout the bosch sensors but i just dont understand why it wont give any codes...
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Old 02-03-2012, 09:18 PM   #7
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im a new svt owner, check light on... i just replace my bank 1 o2 sensor 120 miles ago, and the light still comes on! i have already unplug a couple times the negative, and the light comes again after 40 / 50 miles. i did install a bosh o2 sensor.

what else should i do?
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Old 02-03-2012, 09:21 PM   #8
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Try a motorcraft O2 sensor? Check E-bay surely you can find them a lot cheaper than from a dealer.
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Old 02-03-2012, 09:37 PM   #9
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try a oem sensor i have heard of people doing what u have put in a aftermarket and have the same problems until they change it back to a oem sensor
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Old 02-03-2012, 09:43 PM   #10
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Ima try that cause nothin else is workin
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