MEP-002A, will Start, Run then dies....any suggestions?

[Chainbreaker]

Let me see if I can put my 25 cents in,

Each Fuel Pump has a Capacitor for EMC suppression. They have the nasty habit to fail shorted or with very low resistance. They fail intermittently over time, barely ever completely at once.
We may just have one or two failing caps on the two fuel pumps for run.
Failing Capacitors also can work for a few seconds or minutes and then their internal resistance decreases and this will reduce the current available to the fuel pump, slowing fuel pump down until fuel pump stops all together.

Disconnect capacitors and see if this fixes the problem.

Note to the Innocent bystander,
Back in days when we had TV's with picture tubes and the vertical picture stabilizer capacitor went bad, then the picture would become vertically smaller over time like in the old movie films and finally you would see only a long bright stripe across the screen in the center.

So by "disconnect capacitors", I assume you mean cut them out and splice with butt connectors? That would seem to be the best fix given most of us aren't concerned with EMI.

 

[Scoobyshep]

@Scoobyshep , I am sure gald you didn't become a TV Repair Man! This would have been the Cap for the Horizontal Stabilizer, which failed completely open....

I think I'll stick with the electrician\controls engineering route, ride systems can be annoying enough yet gratifying

 

[rickf]

Let's see, video gams on CRT TV's. That would be pong or maybe Pac-man.

 

[Scoobyshep]

Let's see, video gams on CRT TV's. That would be pong or maybe Pac-man.

It was a Sega Genesis, I was playing Sonic the hedgehog 2. It was an old console TV that was around before I was, it took 3 guys to haul it out of the basement to get it repaired, the shop fixed it inside a week and that thing stuck around until 2003.

 

[peapvp]

So by "disconnect capacitors", I assume you mean cut them out and splice with butt connectors? That would seem to be the best fix given most of us aren't concerned with EMI.

Yes, as they are soldered. You could desolder the cap as well.

 

[Guyfang]

You could also disconnect one pump. Run the set for a few hours. Then reverse the process. Simply disconnect the first pump. and hook the second pump up. Run it a good long while. And with a load if possible.

 

[Chainbreaker]

You could also disconnect one pump. Run the set for a few hours. Then reverse the process. Simply disconnect the first pump. and hook the second pump up. Run it a good long while. And with a load if possible.

One could install a couple of toggle switches to accomplish that. There are 24 VDC round toggle switches that could be mounted in frame example. You could then toggle on just one, or the other, or both if you're running in "mission critical mode" (redundancy factor if one fails). There are some lighted ones when turned on that are also available, so you could easily visually verify which pump is energized.