c5 alternator charging issues
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Intermediate
Joined: Jan 2013
Posts: 35
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From: San Tan Arizona
c5 alternator charging issues
Hello All,
I just upgraded my 2004 LS1 engine with Port polished 243 heads, Lunati cam, long tube exhaust, Air Raid CAI, Stage 3 Transmission, and some small other items. Also had Professionally tuned/Dyno by Nic D (Excellent professional guy). I also had my water pump, valve covers, and alternator bracket powder coated. Here is the issue. I have to rev the RPM's about 4000 before the Alternator starts to charge around 13.3v (Which I think should be more than that). Also if i turn on any accessories it will read a lower voltage.Before I rev motor it is about 11.8v. I replace alternator and have new Optima Red top battery. I checked all ground locations they are all tight. Also these readings are from my DVM, not just from the display in car. I did research on internet and maybe starter connections, but I check all connections and they are tight. Any ideas would be helpfull,
Thank you in advance,
Jimmy
I just upgraded my 2004 LS1 engine with Port polished 243 heads, Lunati cam, long tube exhaust, Air Raid CAI, Stage 3 Transmission, and some small other items. Also had Professionally tuned/Dyno by Nic D (Excellent professional guy). I also had my water pump, valve covers, and alternator bracket powder coated. Here is the issue. I have to rev the RPM's about 4000 before the Alternator starts to charge around 13.3v (Which I think should be more than that). Also if i turn on any accessories it will read a lower voltage.Before I rev motor it is about 11.8v. I replace alternator and have new Optima Red top battery. I checked all ground locations they are all tight. Also these readings are from my DVM, not just from the display in car. I did research on internet and maybe starter connections, but I check all connections and they are tight. Any ideas would be helpfull,
Thank you in advance,
Jimmy
