2003 Expedition
EB
5.4L 2V
165K miles
Battery is good. Let me say that again from the get go - battery is good. It's been tested at two different parts stores and when I put it in my other truck it starts like a dream.
Normal battery voltage until you key on engine off. Voltage will drop to 5 or 6 V - this is w/o cranking. Lights on the dash will randomly come on and off, some come on very dim, fuel pump will continuously run (not just 2 second prime) although very weak because of the low voltage. If you try to start you will get crazy relay action, no starter clicking or anything just more electrical wackiness. I've been examining grounds all night but to no avail. Everything looks good so far. When I got done testing for the night I went to disconnect the battery and the negative terminal was really hot.
All fuses are good. I'm checking out wiring diagrams again for further test points but wanted to see if anyone had any leads in the mean time?
Thanks,
EB
5.4L 2V
165K miles
Battery is good. Let me say that again from the get go - battery is good. It's been tested at two different parts stores and when I put it in my other truck it starts like a dream.
Normal battery voltage until you key on engine off. Voltage will drop to 5 or 6 V - this is w/o cranking. Lights on the dash will randomly come on and off, some come on very dim, fuel pump will continuously run (not just 2 second prime) although very weak because of the low voltage. If you try to start you will get crazy relay action, no starter clicking or anything just more electrical wackiness. I've been examining grounds all night but to no avail. Everything looks good so far. When I got done testing for the night I went to disconnect the battery and the negative terminal was really hot.
All fuses are good. I'm checking out wiring diagrams again for further test points but wanted to see if anyone had any leads in the mean time?
Thanks,