Nelsonjmbf

ok so i recently changed the fuse for my sap and it is still not coming on so i think the relay needs to changed because i know the pump itself works, The idle did get better, until yesterday on my way home from the car was it didnt throw any codes or move rpms, they were idling a lil low i thought but you could definitely feel at idle it was idling bad, could this be due to water getting in somewhere causing weak connection or short while its wet but not enough to cause enough of an issue an throw a code?