Results for "parasitic-drain"

I opened the hood this morning and spotted my 2017 Cummins 6.7 ISB barely cranking over with those AGM batteries that were fine yesterday. I'm pretty sure I need Group 31s but wondering if I should go AGM or stick with regular flooded batteries?

I keep hearing good things about Duracell and NAPA batteries - anyone have experience with these brands on a diesel setup? Also wondering what CCA rating I should be looking for and if I really need to replace both batteries at the same time (one's still cranking okay but the other's getting weak).

Just want something reliable that can handle those cold morning starts without leaving me stranded! …more

Replaced the PCM on my 1999 Holiday Rambler Ford F53 chassis but still getting complete power loss with coil malfunction codes hitting an entire engine bank. That seems weird, right? Like what are the odds ALL the coils on one side would go bad at once?

I finally wrestled the PCM out (what a pain!) and found some discoloration on one side of the circuit board. Been reading online and seeing mixed info - some say it's the ignition system, others pointing to PCM failure. Really hoping it's not the PCM since those aren't cheap, but the whole bank thing has me wondering. Is this actually pointing to the computer being fried rather than ignition problems? …more

Between storage seasons and spring startup, my 2006 Southwind with Ford Triton V10 keeps developing the same parasitic draw that kills my battery. After sitting a few days, battery drops to 11.3V. Main symptom: when I turn key off and remove it, power still flows to dash gauges. Needles flicker and I hear buzzing for several seconds after key removal.

Is this a failed ignition switch or could it be stuck relays? What's the proper way to test and confirm the cause before replacing parts? …more