1995 toyota corolla new battery wont stay charged. i can jump the car run it shut it off and restart it but not the next day.
First, have the new battery tested & fully recharged.
You may find you problem at any point along the way but here is the proper procedure.
Now, you will need a digital voltmeter to really perform this test properly and be prepared to have a blown fuse or two, as you will be testing the system by removing and replacing them.
Install the freshly charged battery, making sure the terminals are clean and well protected with vaseline or grease. Install the Neg (-) connection last when installing the battery, remove it first when taking the batt. out. Check your negative connections.
Before connecting the Neg. cable, take a reading with the voltmeter to see what the current voltage is, it should remain fairly constant with a good strong battery when disconnected well over 12.6 volts.
Connect the Neg cable and connect the multimeter again, you should now see it start to drop, depending on what is draining the battery, fast or slow. If you note this drain is heavy, remove the neg cable again.
Make sure all things are turned off, brake lights are off when pedal isn't being pushed, no interior or trunk lights left on.
Next, start the car, the multimeter voltage reading should increase or hold steady, no drain or the alternator is not charging and could actually be draining the battery. Check belts and wiring harness plug-in.
If you haven't found your problem, make note of the fuse positions and remove them all. Connect the battery Neg cable and test for drain again. If the car isn't draining anymore, install a fuse at a time until you find the one causing the drain of voltage & then you'll have to trouble shoot that system.
There is a tool that fits over the wiring, that will indicate current usage without removing the fuses and such, available at most parts stores, but until you have one, this is the way to find the problem. Isolate it.
Mar 11, 2010 |
1995 Toyota Corolla