I have a early 2000 f250 7.3. Solenoid stopped working for the glow plugs so I replaced it. Now the batteries went dead with in an hour .put the charger on one battery for a few hours.went out it started up.so I put the charger on the other battery for a bit tried to start it it was all most dead. Any one have any ideas?? I checked the solenoid it is only getting power to the glow plugs when the key is on. NOT drawing all the time. So I don't think that is killing the batteries..
It would take a Huge Draw to kill good batteries in an Hour,,, GPs would do it though!
Are you sure the batteries are good? If at all a questionable, charge them up fully and take them somewhere to be Load Tested at a High Rate (not one of those dinky 100A testers the Parts Stores use, out Big batteries need 2-300A to properly test them)
Ok thanks. The batteries may not be any good. They should be not even 6months old. I will have them tested
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