Not sure what you are asking here, but if you are asking how to correct that sentence, the correct grammar would be:
"As soon as I went to see, he ran away" - The verb tense in use is the simple past tense and both verbs (I went from the verb "To go", and "he ran" from the verb "to run") need to agree. See references for more information on the simple past.
Shoot me a message if you would like some classroom tutoring on this subject. Simon