I have a '99 Dakota 3.9 sport with 5 speed trans. 103k on the clock and running pretty good except them ball joints that suck...
Anyway, I have had the batter replaced (for free) 3 times since purchasing the truck new in January of '99. 1st time was in Feb '00, I was up in Canada and battery was completely dead when I woke up in the AM. Called CAA and they jumped me and I went to nearest dealership who told me I had a bad battery. They replaced it for free. In December of '02, I had same problem, and dealer where I purchased the truck said same think, new battery. Tech advised me that there was a batch of bad batteries supplied to dealerships in NE and my battery was one of them. No problamo on my end. I get a new battery and it doesn't cost me a penny. Forward to late winter '03. Battery not dead, but doesn't sound too good. Takes a couple of turn over's before it will start and sounds like its really straining. I take to dealership and once again, they replace the battery telling me that when they run an 'electronics' test on the truck, everything is good except the battery. Again, covered under warranty so no cost to me except the test (cost me $30 which wasn't too bad). Fast forward to current day. I am still having a problem with starting. The battery always has juice and truck starts every morning, but when it starts, it sounds like its really straining. I've also noticed that there is some white/blue green fluffy build up on the negative terminal. I clean it up best I can, but within a week or so, it comes back. A buddy of mine works at a shop and he told me to come on over after hours, and he can put clean the battery terminal's correctly with some acid solution that will clean the terminal's up properly. It takes about 1 month, but the build up returns. I'm stumped and not sure what to do that this point. Any ideas??
As a side note, there is a faint burning smell when I start my truck in the extreme cold (less than 10 degrees F), when I exit the truck. I tent to start my truck and let it run for a few minutes before I leave for work. The smell is not as noticeable when the temps are higher, but it's still there.
Thanks to all that reply. I've found lots of good info in this NG. Been lurking for over a year, but don't recall ever seeing this specific problem.