k5 won't start now, shut off while driving

[Ultimate CC]

Well I have a 87 k5 blazer with a 350 tbi, recently we did a tune up, replaced almost all the electrical system on the truck trying to diagnose a spark issue, well we finally fixed that, we drove it for a couple weeks now and its been great, now today while driving today the truck just shut off, then it wouldn't start, i went under the hood, moved things around and it started, drove 10 ft and shut off again, it just cranks and cranks but it will not turn over. Seems like a spark issue again but I am lost on what it could be, any ideas?

 

[Russell]

Get your ignition module tested! It is the black module that all the wiring plugs into on the distributor itself. If it is good, or bad, make sure you re-install using plenty of thermal grease like you'd use for a computer's processor. Heat is the number one killer of ignition modules.

 

[79rustyk10]

fuel pump? sounds like what happened on my 89 k2500 one time, fuel pump was shot.