How do I clear the check engine Light? - MustangForums.com



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Old 10-21-2007, 05:41 PM   #1
bbbngowc
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Default How do I clear the check engine Light?


1991 Fox
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Check engine light is on. I want to clear it. Is there a DIY method?
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Old 10-21-2007, 05:47 PM   #2
w8less
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Default RE: How do I clear the check engine Light?

unhook the battery for about 5 min and then re-hook it up
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Old 10-21-2007, 05:49 PM   #3
bbbngowc
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Default RE: How do I clear the check engine Light?

Been there, done that. Still on. What else can I try?
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Old 10-21-2007, 05:52 PM   #4
Joel5.0
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Default RE: How do I clear the check engine Light?

DIY KOEO/KOER/Cylinder Balance Self-Test ... to ID what failure code(s) need to be fixed.

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Old 10-21-2007, 05:56 PM   #5
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Default RE: How do I clear the check engine Light?

you said to clear not to fix. if you can identify the code you can fix the problem and not have to worry about the problem
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Old 10-21-2007, 06:08 PM   #6
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Default RE: How do I clear the check engine Light?

what if the problem is having no smog or egr stuff on the car, cause thats the problem i have
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Old 10-21-2007, 06:17 PM   #7
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Default RE: How do I clear the check engine Light?

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ORIGINAL: Woodard2589

what if the problem is having no smog or egr stuff on the car, cause thats the problem i have
The only EGR codes that will cause the CEL to illuminate are 31 or 35, not having any of the smog solenoids (codes 8x) connected will not cause the CEL to turn on. The reason for the "EGR Simulators" is to force an EGR code 33 only, and not have the CEL turn on.
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