In February, I had to replace both batteries in my '02 D/A crewcab. A couple of weeks ago, I notice the right frame rail, roughly in the area of the bottom of the firewall, is all rusty but clearly from some sort fluid running down it. At about the same time, I notice rust stains on my driveway under the RF of the truck. A little checking reveals the right battery has been spewing acid onto the tray and from there down onto the frame rail etc. Also noticed over the last few weeks that the engine did not crank quite as fast as in the past. The drives side battery is fine...no problems at all.
I take the battery out, back to the retailer and they test it....it's no good and replace it under warranty. I put the new one in after preping and painting the battery tray etc. Engine cranks like new again and everything is good. That's two weeks ago. This morning, I notice the same rust stain on the driveway again. Look at the battery tray on the passenger side....same thing again...spewing acid down onto the frame...battery tray really corroded. Driver's side battery is fine.
What would cause one battery to over charge like this and not the other? Battery connections are good and tight. I have not checked the wires themselves yet. I'll do that on the weekend when I get some time. I have been watching the voltmeter with the truck running, and nothing out of the ordinary.
Need some thoughts here please to get this repaired. It's going to ruin the frame in that area in no time!
Thanks,
Chris