Prom3theus
NAXJA Forum User
- Location
- Cleveland
Hey guys,
99 cherokee, 4L. New mean green 200 amp alt, all new water pump, ac compressor, tensioner pulley, steering pump and belt (so all bearings are in great condition and no belt restrictions). All those replaced few months ago. Before replacing them, I saw "check gauges" light every couple months while driving for just few seconds, right after the light went off for another few months. I thought its because belt got a little loose and spun on the alt pulley. As months went by and after replacing the above mentioned parts, the "check gauges" become more frequent, and now, it occurs every day (I'm positive it's not related to parts replacement).
So, I turn the ignition on, but don't crank, the battery voltage gauge jumps a little over 12v (normal batt voltage). After cranking and engine starts, the batt voltage gauge sits still at 12-ish volts, rather than jumping at 14ish volts. After driving for few minutes, the voltage at the gauge drops at 9ish volts and "check gauges" light shows up. After driving for a while the gauge jumps back to 14ish volts or, if I stop and start right away, the gauge shows 14ish volts. Batt is good, measured in the morning before starting the engine, I have 12.5v (engine stopped) and 14.3v with engine running (alt charging)-so alt is also good. I measured the battery with engine running also when the gauge showed 9v and "check gauges" was on, it showed the same 14.3v, so it looks the issue is not with charging.
I suspect it's a relay or a a bad grounding due to the random occurrence of the issue, but have no idea where to start looking at. And definitely the belt has proper tension and doesn't slip. Any suggestion are definitely appreciated.
99 cherokee, 4L. New mean green 200 amp alt, all new water pump, ac compressor, tensioner pulley, steering pump and belt (so all bearings are in great condition and no belt restrictions). All those replaced few months ago. Before replacing them, I saw "check gauges" light every couple months while driving for just few seconds, right after the light went off for another few months. I thought its because belt got a little loose and spun on the alt pulley. As months went by and after replacing the above mentioned parts, the "check gauges" become more frequent, and now, it occurs every day (I'm positive it's not related to parts replacement).
So, I turn the ignition on, but don't crank, the battery voltage gauge jumps a little over 12v (normal batt voltage). After cranking and engine starts, the batt voltage gauge sits still at 12-ish volts, rather than jumping at 14ish volts. After driving for few minutes, the voltage at the gauge drops at 9ish volts and "check gauges" light shows up. After driving for a while the gauge jumps back to 14ish volts or, if I stop and start right away, the gauge shows 14ish volts. Batt is good, measured in the morning before starting the engine, I have 12.5v (engine stopped) and 14.3v with engine running (alt charging)-so alt is also good. I measured the battery with engine running also when the gauge showed 9v and "check gauges" was on, it showed the same 14.3v, so it looks the issue is not with charging.
I suspect it's a relay or a a bad grounding due to the random occurrence of the issue, but have no idea where to start looking at. And definitely the belt has proper tension and doesn't slip. Any suggestion are definitely appreciated.