7.3L No Start, Weird Sound
#1
#2
#3
Sounds like dead batteries. Make sure you have a good conection at the terminals and check your cables also get a volt meter and test the voltage on the batteries. You do have 2 right? Being 12 volt batteries you should not have anything less then 11.4 if you do put them on charge. How old are the Batteries? If you have a crappy cable you might only be pulling power from one.
#4
Sounds like dead batteries. Make sure you have a good conection at the terminals and check your cables also get a volt meter and test the voltage on the batteries. You do have 2 right? Being 12 volt batteries you should not have anything less then 11.4 if you do put them on charge. How old are the Batteries? If you have a crappy cable you might only be pulling power from one.
#7
Thanks but...
Looks like the problem isn't solved after all. Started perfectly fine yesterday, now it won't even crank and is reading about 6.9V with a voltmeter on both batteries... Now I'm thinking alternator but I guess I'd better get some juice in it just to start it so I can actually test the alternator before jumping to conclusions (like I did when I went ahead and replaced the batteries, ).
Looks like the problem isn't solved after all. Started perfectly fine yesterday, now it won't even crank and is reading about 6.9V with a voltmeter on both batteries... Now I'm thinking alternator but I guess I'd better get some juice in it just to start it so I can actually test the alternator before jumping to conclusions (like I did when I went ahead and replaced the batteries, ).
#8
Ok so I couldn't even get it to crank with a boost. I was getting the batteries up around 12.5V-13.5V but the voltage drops rapidly when the key hits the ON position. I'm not sure what would cause this. Maybe I should be aimlessly digging around for a short somewhere on the truck? It'll have to sit for another week now.