Hey everyone. My car has been acting a little funny ever since I got a new battery. I finished my LS6 intake install, got a new battery, and have had a battery tender on it. It'll start up fine the first time, but has trouble doing it again within 10 minutes of the first. My windows are very, VERY slow, sometimes just stopping, my voltage meter reads low, and perhaps most importantly, my engine either idles too low when its warmed up, or too high when you first start it up. What is wrong? Can it be just the battery? Please please please help. Thank you.

 

Sounds like it's not charging....be sure to check all the connections, grounds etc.

 

Ok, besides the battery terminals, is there anything else to really look at? I'm not very experienced with electrical work at all.

 

YOu have a bad ground, Check all your ground points follow the main ground from the battery, take it off and with emry cloth or sand paper clean the cable and the mouning point. Also check your grounds on the intake and heads anything you may have taken off make sure their clean and tight. 99% of electrical problmes are bad grounds