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1994 Silverado c3500 intermittent draining of battery

If I pull the fuel pump relay, the pump still runs, due to the oil pressure sending unit as a backup, power supply. I already replaced, oil sender. I'll try cleaning contacts and posts, on fp relay, thank you so much!!!
- Pun1
- Post #3
- Aug 23, 2018
- Forum: Engine Performance + Maintenance
1994 Silverado c3500 intermittent draining of battery

My 1999 gm c3500 auto with a 454, 105k original miles. Intermittently, the fuel pump keeps running. I can leave it alone a few days and it doesn't run. Drive the truck for weeks , with zero issues. Then one day, it will just keep running. I pull fp fuse to kill it, when it does. I replaced the...
- Pun1
- Thread
- Aug 21, 2018
- Replies: 2
- Forum: Engine Performance + Maintenance