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Discussion Starter #1
hi there I am new to this site. I am also a new owner of a 88 Cougar. I have a check engine light and rough idle at cold start up. try a scan tool and jumper wire to pull codes but no Communication. any suggestions?
Thanks jon
 

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A scan tool with a jumper wire? I don't recall needing a jumper wire for an OBD I scanner.
 
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