mass air wire colors need help fox code 66 - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 1 Old 06-06-2011, 10:02 PM Thread Starter
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mass air wire colors need help fox code 66

I keep pulling a code 66 on my 90 fox , I suspected a bad meter so I pulled it and used a known good meter, both are pro m 77 for 42's, now after clearing the codes then with the new meter same thing, and it only happens after driving. so I started to look at the wiring, and I realize someone had spliced it, now there is a yellowish and a bluish wire I think they have them reversed?? is this possible? I see the red and black are correct the harness was extended and the plug wasnt the original plug, there is red , black blue and brown on the plug, like I said red and black are good, any help would be great

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