self diagnostic test | Ford Explorer Forums

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self diagnostic test

ducksplus

Active Member
Joined
September 29, 2005
Messages
72
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0
City, State
arkansas
Year, Model & Trim Level
91 xlt 4x4
how can i run a self diagnostic test on my 91 X... i have heard that i can do it without a test machine.....???

mike
 



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go buy the Chiltons or hanyes repair manual for your truck.
invaluable tool to have.

have you tried a search?

You can run both the KOEO and KOER test with a jumper wire at the self test diag port.
 






it is difficult to do??
 






nope, especially not if you have the book, or search online to find the step by step, which will basically be a copy of what it says in the book.

Paper clip = you can perform the self test.
 






what should i search for???
 












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