i have a 1992 honda accord i need help with?

i have this 1992 honda accord. my check engine light stays on, we changed the fuel filter, the air coolant temp censor, the 02 censor the hoses on it now the abs light comes on we changed the brakes and the d4 light flashes off and on even when in park . we did a test on it , it shows fuel when we drive it about 5 to 10 miles it starts loosing power after a little while it picks up and runs again pretty good, what can be the problem now?
 
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