Bought a new battery yesterday, the old battery started the blazer up 3 days ago. I changed a fuse inside panel. Let it run for 1/2, turned it off and tried to start it again, and it started right up. Now even with a new battery it won't crank over, Any suggestions? I was told the starter? But, it started fine, usually a starter goes bad, you have a hesitation in the starting is lagging. Thanks to any & all who might know something to do, I also found a vacuum hose off , and I don't know where it goes. It's pretty long, and was laying in the middle of the motor, Could that be the problem?

 

check the connections

 

ok, we have tried to disconnect and reconnect for the last 4 days. Could it be positive wire?

 

Could either or both

 

true, they look a little frail

 

My 97 blazer did the same thing did u check the fuel pump that's what went out on mine