Ford Repair: 1989 Ford F-150 truck, ford f 150, f 150 truck

Question
Hello. I have a 1989 Ford F-150 351 windson engine .. I was driving down the road and it just shut down no worring ..... We have changed the distrubeter and coil .. a sqaure computer module that tells the computer what to do.. It is a auto transmisson..We have done a complete tune up on the truck.. We get no fire from the coil to the distrubter.  

Answer
Hello and thanks for the question...I'll try to help.
 You might want to check for a broken timing chain. To do this remove the dist. cap and crank the engine over. See if the rotor moves. If it doesn't ......looks like you've found your problem. If it does......I would start checking for voltage at the ignition coil and go from there.
Hope this helps,
Erik