Rough running when in gear?

[kevin.diaz]

I just rebuilt the top end, new gaskets, it idles fine. When put in gear either reverse or drive it then runs rough. I've checked all vac lines and wiring harnesses. Why?

 

[92exp4x4]

Pull codes. You may have forgotten to hook something back up. Check all the connectors you can find. You may have disturbed some by accident.