scanner code 25 and 77

[mudslinger007]

I have 1986 Bronco II 2.9 V6 these two codes { 25 & 77 } one refers to knock sensor and the other said did not notice full throttle usage. The Bronco will pull normally up to about 30 or 35 mph then falls on its face, can not tell if the thing cuts spark or fuel but it will if flat sometimes let you get up to 65 mph, and always will if down hill. The steeper the hill the worse the problem. I can not find where the Knock sensor is, and two the spoud { spelling } connector where are these. After it was smogged it shortly there after started this stuff. The smog people had me go to an approved repair place by state of NV. the one said to the place I went to to do something with the spoud connector.

Thanks any and all for any help.

Mudslinger007