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Really really basic question.....

879 views 1 reply 2 participants last post by  evilfij 
#1 ·
Sorry, I haven't ordered a factory workshop manual, and I tried searching this site......What kind of ECU controls a 95 NAS 3.9 Def 90? OBD I or OBD II? Will the little LED readout tell me everything I need to know? If not, what code reader will work?
 
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