Dam, that's all I hear this morning starting the truck. Thought my month old Optima battery was dead but I hooked up the charger to it and still wouldn't turn over. I even put the charger in jumper mode (75 amp) and still just clicks.
All the cable to the battery seem fine.

Just put the injectors in last night and it started fine when I put it away for the night.

Any idea's on what to check first here? I'm thinking it might be some bad connection that got corrosion on it or something.

 

Oh I forgot, this happened just about 2-3 weeks ago too. I thought my factory battery took a dump so I put in the Optima and its been great till now.

My Fluke needs a new battery so I couldn't check to see if something was draining the battery. I will get it going tonight, but it just seems old that it would drain it that fast in one night and why has it not happened in the last 2-3 weeks

 

Well the Optima tested out good. Time to start pulling and checking cables.

 

I had the same problem after doing my motor swap. I first changed my stock battery for an optima, then i had my altenator rebuilt (which needed to be done regardless) The problem was........two damn ground wires! The ground coming off of my battery and the ground off of the starter. I had one grounded on the motor mount, and one on the PS pump bracket. I took those two grounds and grounded them together on the block and my truck has been just fine ever since.

 

Yup turned out to be the grounding strap that goes to the block.

 

Good to see it was just a simple problem

 

Me too. Figures this happens right before I go back to the dyno tomorrow.