IT STARTED AFTER SOMEONE PULLED A RELAY BECAUSE THEY COULDN'T FIGURE WHY THE RADIO WOULD GO BACK ON,AFTER IT TIMED OUT,AND YOU LEFT THE VEHICLE.THE CHANGE OIL LIGHT FLASHES AND TRUCK OPEN LIGHT ALSO NOW.ANY HELP?
Re: BATTERY DRAINS OVERNIGHT,NOTHING VISABLE IS ON.
Have auto store check battery. they will do it for free. if its good . i need to know if its a after market radio. and replace the relay they pulled out it may be brunt out from not unhooking the battery before pulling out and replacing it . if that dosent stop it theres a ground wire loose probly from the radio insulation if it is a new radio. let me know any of the above that is not the case thanks hope this helps.
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Most likely you have either a bad relay, or a short circuit. My 1998 had a relay someone had put in that was the wrong relay such that it caused a current drain. Use amp meter between battery ground cable (disconnected from battery) and battery ground post to see how much drain exists, then pull relays one at a time to see if one stops the drain. If not, do the same with fuses to find the bad circuit and fix drain.
Sounds like you have an electrical drain somewhere in the car.did you recently install a radio or other device such as an alarm.the circuit is probably draining overnight.also check that the battery terminals are clean and tightened down.
It could be. A couple of ways to check: either take the negative battery off overnight or for 18 hours, and see if battery does not go flat-then you know you have a drain somewhere. Or you could remove all power to the radio overnight (by pulling radio fuses or unplugging the radio), then see if the battery has drained any.
I have done this before, put about a 10 amp charger on the battery. Pull the courtesy light fuse first. Look at the battery charger, it is probably charging several amps, pull one fuse at a time. When the charging amps drops down you found the fuse the controls the problem. I had a car several years ago that someone pulled the seat belt all the way out, somehow it was pulling a load and draining the battery overnight.
either you have a bad battery, dirty connections or you have a parasitic drain. go to your local parts store for a battery test .to test a parasitic drain you need a multimeter. disconnect your negative battery cable. put your meter in the amperage setting. hook one lead to the negative cable and the other lead to the negative battery terminal. make sure that the cable is DISCONNECTED from the battery or you will blow fuse in meter or blow meter. read your meter. if it is anything over .5 amps or 50mA then it will fail the test. to figure out where the drain is coming from start pulling fuses. pull a fuse and put it back before pulling another. if the readings drop below the .5a then the problem is in the circuit of the fuse you just pulled. from then on it depends which circuit it is to determine the problem.
It would be best to pull the radio fuse leaving it out for several minutes then replace it. tis may well fix the problem but if it doesn't you can remove the fuse agin knowing it will not drain the battery over night