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i have a 2000 honda civic value package dx and the speedometer will not work nor the trans will not shift . the engine light is currently on and the d4 light is blinking which i heard if i get a vss sensor it will fix both problems . took out the old one and purchased this one.. but i notices the gear was too small so i took it out and put the old gear in the new body and it did not work. heres the link to what i bought. http://shop.advanceautoparts.com/web...RPSENSAMS_____

any suggestions to what could be wrong or what i can do to fix this... thank you !