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There is a single green plug under the hood on the passenger side of the engine, in the back next to the firewall, (there is also a 5 wire plug next to it, dont mess with that) take a wire with a spade connection and plug it into the single green connector and ground the other end. (connect it to the body on a clean metal spot) then turn the key on, but DONT start it. watch the Check Engine Light, count the flashes and pauses. EX. flash flash flash flash flash (repeat)
this is a 3-2 code, look that code up and find the error.
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Try this link, ! http://www.extreme-check-engine-light-codes.com/Ford%20OBD1%20Decoder.htm
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