So the other day I was driving down the road, and all of a sudden my dome lights came on. I didn't touch the switch at all, but they just came on. When I moved the switch to see if they had been on but just delayed, it wasn't in the on position and once I moved it they turned off. Then just yesterday I went to turn it on and it just made a clicking noise (the kind where your battery is dead) and then the speedometer needle starting jumping up and down and the truck was making a very rapid ticking noise (couldn't hear it from outside, only inside). I lifted my hood to check my battery connections and they were tight enough that I couldn't even wiggle them. But then I got back in my truck to try again and it started right up. This occured when I had just had it running about 15 minutes before. Anyone have any ideas as to what could cause either of these 2 occurences?

 

Could be a bad ground or the battery wire could be corroded inside the insulation.

 

Hmmm.. I never thought about the wires. I did have my battery disconnected two days ago, and when I looked at the posts/connectors they had s hard blue build up, as well as a soft/gunky yellow build up. Before I reconnected them I cleaned them both up and put di-electric grease on the posts. But maybe that gunk that was in there corroded a wire somewhere?

 

Yeah, it can corrode under the insulation on the battery wires.

 

Ok, thanks for the help. I'll look into changing them out when I get a chance to buy new wires.

 

di-electric grease is an insulator and stubborn to remove. Use a solvent to clean your battery posts and terminals, sand a bit, tighten and your problem should be gone.

 

ive had somethin similar. well, not similar to your types of problems, but electric-wise. my radio will randomly blast full volume for a split second then settle down. and today, my back-up sensors wouldnt come on. they did after i shut the truck off and restarted it.