Could be the pump is bad, the pump relay has failed or you have a bad connection.
I would start with the pump relay. They draw quite a bit of current and the contacts in the socket loosen up. Then I would check the actual pump pressure, I have seen after market pumps that fail in a year or less so it is possible the pump is failing. Check the filter as well but your description sounds like pump.
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Saturday, April 29th, 2017 AT 1:30 AM