Battery is fine and care runs all day but once it sits over night the battery is dead by morning and I keep having to jump it to get it started. I had my batter tested, my starter tested and the alternator tested and everything is fine, but something is draining the battery while the car is off. No lights on inside or out.....any ideas?
Parasitic draw is what's happening . Have see instrument clusters cause this ,as well as module's not powering down . You need to do testing to find the problem . Watch these videos an test .
Diagnose Battery Drain Parasitic Draw Chevy Trailblazer
The Trainer 27 3 Ways Of Finding The Cause Of Key Off Battery Drain...
SOURCE: Car dies and battery light comes on.
Will it crank over when it won't start? When It dies check for spark at the sparkplugs if none change the ignition module.
http://www.aceautomotive1.com FaQ and BLOG
SOURCE: battery keeps dying due to radio+clock staying on
you have a parasitic load(the device will stay on when car is off drains battery), take the negaitve battery cable off when you turn the car off will fix the problem temporarily, you have to take it into a qualified electrical mechanic and he can fix it for you.
SOURCE: My battery keeps dying but my alternator is fine
First, DON"T check your alternator that way anymore. It's not good to do on newer systems! The best, quickest check I can tell you is to put a volt meter across the battery. Running with accessories off you should see voltage of about 13.5 to 14.5.
With all accessories and headlamps on high turned on, it should not drop below 12.5. (and that is the absolute low end!).
It sounds like something in the car is staying on. check the glovebox light and interior light delay and make sure they are OK. Otherwise, you will have to start checking entire system for a draw that's taking out the battery overnight. To check, you can pull one fuse at a time and see if draw goes away, then check system that fuse serves.
SOURCE: Changed alternator & battery but car does not charge
make sure all those spots the wire daisy chains too arent corroded and clean and shiny bright, check all your connections and check that theres no corrosion on the bolts or mounting points. other then that you may just have a bad alternator again, autozone parts arent always the best
SOURCE: 1993 chevrolet s10 blazer 4.3l clicks but wont start
Sounds like you have a bad spot on the starter armateur...and will need to replace the starter.
If its the original, and you have over 50K miles then its probably a safe bet that your starter is bad, and will fail totally soon...if thats not the case now.
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c
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