AECS
Member
- 310
- 6
- 18
- Location
- Munford, TN
So here it the story.
I installed a new aluminum radiator and heater core yesterday, and all was well, then I checked the coolant to negative terminal to be sure I didn't have ground issues, and i got almost one full volt! Not good at all.
The weird thing is as the coolant cooled the voltage dropped, to .3 volts. I grounded the radiator to the frame where the battery and passenger headlight grounds to the body. Pulled and cleaned where the battery grounds to the frame, where the 24v negative buss grounds to the block, and where the block grounds to the cab. I am still getting .17 volts, but the coolant is now ambient temp, so I will have to see what happens tomorrow after I drive it a bit. This is driving me nuts!
I am using a Fluke 77 and a Craftsman meter, they zero when the leads are shorted. Also I read zero ohms verifying grounds.
I get zero volts checking coolant with battery's disconnected.
If I am at under .2 tomarow at operating temp I am going to let it ride as is, what say the experts?
I installed a new aluminum radiator and heater core yesterday, and all was well, then I checked the coolant to negative terminal to be sure I didn't have ground issues, and i got almost one full volt! Not good at all.
The weird thing is as the coolant cooled the voltage dropped, to .3 volts. I grounded the radiator to the frame where the battery and passenger headlight grounds to the body. Pulled and cleaned where the battery grounds to the frame, where the 24v negative buss grounds to the block, and where the block grounds to the cab. I am still getting .17 volts, but the coolant is now ambient temp, so I will have to see what happens tomorrow after I drive it a bit. This is driving me nuts!
I am using a Fluke 77 and a Craftsman meter, they zero when the leads are shorted. Also I read zero ohms verifying grounds.
I get zero volts checking coolant with battery's disconnected.
If I am at under .2 tomarow at operating temp I am going to let it ride as is, what say the experts?