Reference Dumping the computer diagnostic codes on 86-95 Mustangs

Dump the codes: Codes may be present even if the Check Engine Light (CEL) isn't on.​

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Dumping the computer diagnostic codes on 86-95 Mustangs​

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Revised 26-July-2011. Added need to make sure the clutch is pressed when dumping codes. ​

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Codes may be present even if the check engine light hasn’t come on, so be sure to check for them.​

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Here's the way to dump the computer...​

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