Chevy Lumina wont start?

Question

Ok my sister bought a Chevy Lumina. She has replaced the battery on the car. had the alternator checked and is reading right output but if it sits it wont start and has to be jumped every time and only needs to sit for over night any suggestion would be helpfull thanks

Answer 1

power drain is lowering battery voltage. we need to locate source of drain. an auto technician is quickest way but we can check a few things ourself eg: with multimeter checking power drain at battery and lead connection ( unless we know what we are doing here ..best left to experts)

alternatives: ensure all devices that may use power are Off. eg lights in glove box.boot. sat nav charger .we do not want anything using power other than main ecu itself. ( around 50- milliamps)

so try removing fuses on suspect circuits . replacing before trying to crank. if we find still an issue..? try other fuses. once we get to stage of easy crank and start.. that circuit has the power drain issue.

as this can be time consuming etc often best way is garage fix.

Answer 2

You need to do a simple test. You need to check the current drain. There is something that is causing your battery to drain down at night. If you get a multi meter and set it to the mA (milli Amp) range, disconnect one battery connection. Put the meter's probes on one connector and the other on the battery terminal. Anything over 25 milliamps will drain the battery overnight. Typically I see 200 - 900 milliamps which indicates a light is on somewhere. Check the glove box, the trunk, under the hood and remove those light bulbs. Also, a door switch may be bad. If your current draw is less than 10 milliamps, the battery is bad.



Check the link I have found on this issue

Answer 3

There is likely a short circuit that is draining the electrical system. Try disconnecting the battery at the end of the day and reconnecting in the morning. If the car starts you know you have a short. Also have the battery checked. Sometimes they are faulty right out of the box. Check the regulator.

Answer 4

something is pulling the juice from the battery ! if the starter has a short it can drain the battery because the hot cable runs to the starter !

Answer 5

Check for a drain & also make sure the battery cables are clean, tight & not damaged from corrosion or getting too hot

Answer 6

get a new battery

Answer 7

There is a drain somewhere.