I followed the directions to get the engine code from this posting:

https://mustangforums.com/m_919444/m.../tm.htm#921609

My check engine light blinks 4 times in a 4 second interval. Can someone please tell me what this means or even better know of a site that can show me? By the way, so everyone else knows (because this is GREAT information!) i used a wire hanger to ground the wire to the negative battery terminal. All your input is greatly appriciated!

Rich

 

when it blinks does it blink 1 then pause then blink 1 then pause a bit longer then starts over again? if it does then it blinks an 11 and that means the system passed.

 

I guess i did it wrong the first time. I grounded the STI connector to negative, turned the engine on and these are the results of the "check engine" light blinking:

4 blinks, engine reved to 1500rpm for 45 seconds, then dropped to 1000rpm for 5 seconds, then back to 1500rpm then 1 blink, 3 second pause, 9 blinks, 1 second pause 1 blink, 3 second pause, 3 blinks, 1 second pause, 3 blinks, 3 second pause, 9 blinks, 1 second pause, 1 blink, 3 second pause, 3 blinks, 1 second pause, 3 blinks.

so it blinks a 91 and 33