Quote Originally Posted by kinyo View Post
This is a similar problem on my ESi. It turned out that the alternator rotor windings was found to have internal short, hence, charging was not at full capacity. I had the rotor replaced and car was back to normal.

A good electrical/alternator shop should have this test jig to verify the integrity of the rotor windings. Without a test jig, you'll need a known good rotor and perform coil resistance checks for comparison. Actually, before I accepted the new rotor, I insisted on the resistance checks, and true enough, an internal short was indicated on my old rotor.

When the engine is running, the battery voltage should nominally read 13.8 - 14.0 volts. Anything outside this range is a possible charging problem (including the battery).

Hope this helps.
+1 if the batt is not charging well, malamang ang prob is the wiring from the internal alternator to your batt.

the ignition si not a prob kung may tik kang narirnig, hindi lang talaga kaya ng batt mo start yung car (mahina). one more thing to add is to check your ground, baka may nagdedrain ng batt mo through grounding.