I have been having intermittent stalling and no start problems, throwing codes 42 43(p0351) 72. The 72 low cat efficiency I have always had, the other 2 popped up recently.
I found out for sure problem is loss of spark. My battery was really, really dead. I got it charged to 12.4. With car running it goes to 13.78.
I'm a bit clueless as to how to diagnose battery drain. I have a voltmeter and continuity tester, but I'm not sure where to start.
I'm not good with electrical stuff. :/
1996 jeep grand cherokee laredo 2wd
240,xxx miles 4.0L i6