Ive been having nothing but bad luck with my truck this winter. It acts like the battery is dead when I try to start. It is the truck in my signature.
If i put a meter on the batteries while in the truck I usually read between 12.5 volts and 13.5 volts. When the truck has trouble starting i can leave the meter hooked up and when I turn the ignition on the voltage drops to anywhere between 6 volts and 9 volts and I hear all kinds of clicking under the dash. Sounds like all the relays under there are turning on and off randomly. I have taken the batteries out and had them load tested seperatly and both tested good. Ive done some of the tests that ive seen in other posts about voltage drops across wires and found that the battery cables appear to be good, no voltage drop at all between batteries. I also checked to see if there was voltage drop to the GPR and show no drop. I disconnected the battery feed to the GPR to see if it was some how causing my problem but this was not the case, I still show the same 6-9 volts when the key is in the on position. I have removed the module for my remote start/keyless entry to help eliminate that, but that made no difference.
The only thing that I have done that appears to make a difference is remove fuse number 20 under the hood. I took them out one at a time and this is the only one that seems to make a difference. The fuse is labeled "Ignition Switch (B4 & B5)" in my owners manual. With this fuse removed the votage with the key off is 13.5 volts and when the key in the first position (where you would wait to start) the voltage drops to 11.5 volts. Does anyone know what this fuse feeds, or has anyone had any similar problems?
Any input is greatly appreciated!!!
If i put a meter on the batteries while in the truck I usually read between 12.5 volts and 13.5 volts. When the truck has trouble starting i can leave the meter hooked up and when I turn the ignition on the voltage drops to anywhere between 6 volts and 9 volts and I hear all kinds of clicking under the dash. Sounds like all the relays under there are turning on and off randomly. I have taken the batteries out and had them load tested seperatly and both tested good. Ive done some of the tests that ive seen in other posts about voltage drops across wires and found that the battery cables appear to be good, no voltage drop at all between batteries. I also checked to see if there was voltage drop to the GPR and show no drop. I disconnected the battery feed to the GPR to see if it was some how causing my problem but this was not the case, I still show the same 6-9 volts when the key is in the on position. I have removed the module for my remote start/keyless entry to help eliminate that, but that made no difference.
The only thing that I have done that appears to make a difference is remove fuse number 20 under the hood. I took them out one at a time and this is the only one that seems to make a difference. The fuse is labeled "Ignition Switch (B4 & B5)" in my owners manual. With this fuse removed the votage with the key off is 13.5 volts and when the key in the first position (where you would wait to start) the voltage drops to 11.5 volts. Does anyone know what this fuse feeds, or has anyone had any similar problems?
Any input is greatly appreciated!!!