Well, battery died and more than likley took alternator with it (at least I think....not sure). Replaced battery on Saturday. I also purchased a rebuilt alternator as well. Installed new battery, but voltage readings were low (ranged from 12.9 - 13.2 v). So installed the re-built Alt but readings were even worse (as low as 12.2 V and no higher than 13.2 v). Took 1st new alternator back and they checked it and confirmed that it woudn't hold voltage under load. Purchased a second alternator on Sunday and installed. Voltage readings (12.8-13.2 v) still seem low to me. I'm positive that just last week I had readings of 14.0-14.2 v from scan gauge. So, I took the 2nd alternator back and got a third one (currently installed). Readings are 12.8-13.2 v. No higher. I'm at a loss. I even took the battery back and had them perform a total batery load test (including individual cells) just to absolutley rule out battery. It checked out fine. So......I'm on my way over to pick up a 4th alternator.
- What should volatge reading be? I've always thought that it should be a min of 14 V when car is above idle. If not, I don't think alternator would be able to properly charge the battery. Static readings on battery are at 12.5v. If not above that.....it won't even re-charge.
- I want to confirm that the only item control voltage output is the internal regulator on the alternator. PCM has no input on this right??
- Your thoughts??