i have a 1998 caravan fuel pump went two weeks ago i put new in and new fuel filter ran good for a week then started cutting and off i checked fuel pressure its within limits even checked coil,crank,cam,tps,speed,egr,map,iat,sensors they all check out good .but avery time switch ignition the automatic shutdown relay,fuel pump relay starts clicking and wont stop i put in new ones still same thing,i disconected all major sensors and asd still just clicks sometimes with engine off. i thought that it was one of speed sensors because my speedometer would start dancing when engine cuts out ,but autozone says they okay,can someone help me please thanks.

bad battery, wiring harness, pcm???battery acid