Engine low power problem?

This is an intermediate problem. When driving the engine seems to lose power.I have to pump the gas pedal to keep the engine from dieing. When I do this it will pop out the exhaust I can drive for months with no problem then out of the blue it happens again. I did replace the fuel relay and it had a tune up recently.

My Truck wouldnt start I thought it was a battery problem turned out that a chip on my truck had shorted or something check engine light has been on for two days unpluged chip and it starts automatically but now has no accerlation and no smoke that I have seen I only drive it a couple miles a day for now but has been my daily driver for a couple years got my license suspened but get it back pretty soon so any information pertaining to anything I might have to do I would really appreciate it

It was a edge EZ. It had nothing to do with the security. How do you check the cataylicit converter