Ford Repair: ford ranger 94 3.0 v6 engine, actron code scanner, haynes repair manual

Question
this truck is a4x4 5sp. standard. CK. Engine light comes on after engine gets to normal temp.Ck computer codes #327 comes up.Ck. voltage OK,replaced EGR vacuum reg. solenoid.after this i cleared code. light came back.  ps used actron code scanner&haynes repair manual

Answer
Hello and thanks for the question...I'll try to help.     
Remove the EGR, and check the passage way to make sure it is unclogged. Then check to make sure it will hold a vacuum. Replace it if it fails this. Reinstall it. Then, hook a vac gauge up to the line going to the EGR and run a Key On Engine Running test. Check to see if there is a signal getting to the EGR. If not.......look for a broken vac line.
Hope this helps,
Erik