'99 Ram 1500 battery drain in 10 days

From : ed h

Q: i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps .

Replies:

From : nunya

i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps you say the battery is only a few years old. how many is a few down here in the south where we get periods of 100 degree days it has a tendency to kill batteries during the heat. what is your climate like i would figure out how old that battery is and test it before i went looking for more complicated issues. if the battery checks out then dig deeper. michael .

From : ed h

i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps you say the battery is only a few years old. how many is a few down here in the south where we get periods of 100 degree days it has a tendency to kill batteries during the heat. what is your climate like i would figure out how old that battery is and test it before i went looking for more complicated issues. if the battery checks out then dig deeper. michael the battery is about 2 years old the climate here is almost perfect except for the wind. we complain about the heat when it reaches 90f and the cold when it reaches 50f yet we dont complain when the winds are at 35+ mph from noon to sunset unless its a cold day so i think the battery should be good but i dont know how long it sat at the autoparts store before i bought it. i had a 6 year old battery in my scout ii tested while i was looking into starting problems with the scout and it held 650 amps the batterys rated cca for a minute with no problem. i realize the age and performance of that battery doesnt translate to this battery. i also recieved some good information about the ignition off drain iod this truck should experience and a few tips on how to trouble shoot so i think im armed with the knowledge i need now all i need is the time. if i find that the iod is within parameters ill have the battery tested. .

From : beryl

ed h. wrote i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps you say the battery is only a few years old. how many is a few down here in the south where we get periods of 100 degree days it has a tendency to kill batteries during the heat. what is your climate like i would figure out how old that battery is and test it before i went looking for more complicated issues. if the battery checks out then dig deeper. michael the battery is about 2 years old the climate here is almost perfect except for the wind. we complain about the heat when it reaches 90f and the cold when it reaches 50f yet we dont complain when the winds are at 35+ mph from noon to sunset unless its a cold day so i think the battery should be good but i dont know how long it sat at the autoparts store before i bought it. i had a 6 year old battery in my scout ii tested while i was looking into starting problems with the scout and it held 650 amps the batterys rated cca for a minute with no problem. i realize the age and performance of that battery doesnt translate to this battery. i also recieved some good information about the ignition off drain iod this truck should experience and a few tips on how to trouble shoot so i think im armed with the knowledge i need now all i need is the time. if i find that the iod is within parameters ill have the battery tested. punkin sez check for an open relay. dead batteries http//tinyurl.com/32elzj check for an open relay etc. - punkin may 15 738 pm .

From : ed h

ed h. wrote i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps you say the battery is only a few years old. how many is a few down here in the south where we get periods of 100 degree days it has a tendency to kill batteries during the heat. what is your climate like i would figure out how old that battery is and test it before i went looking for more complicated issues. if the battery checks out then dig deeper. michael the battery is about 2 years old the climate here is almost perfect except for the wind. we complain about the heat when it reaches 90f and the cold when it reaches 50f yet we dont complain when the winds are at 35+ mph from noon to sunset unless its a cold day so i think the battery should be good but i dont know how long it sat at the autoparts store before i bought it. i had a 6 year old battery in my scout ii tested while i was looking into starting problems with the scout and it held 650 amps the batterys rated cca for a minute with no problem. i realize the age and performance of that battery doesnt translate to this battery. i also recieved some good information about the ignition off drain iod this truck should experience and a few tips on how to trouble shoot so i think im armed with the knowledge i need now all i need is the time. if i find that the iod is within parameters ill have the battery tested. punkin sez check for an open relay. dead batteries http//tinyurl.com/32elzj check for an open relay etc. - punkin may 15 738 pm thanks and merry christmas. .

From : nitpik

put a dc ammeter in line with your battery and cable and see how many amps its drawing and then disconnect one thing at a time until you see it drop significantly. often times the alternator can have a broken diode that will suck the life out of a battery and yet still charge the battery. start with the alternator. go back to one battery for these tests remove the stuff in between the two batteries. i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps .

From : ed h

put a dc ammeter in line with your battery and cable and see how many amps its drawing and then disconnect one thing at a time until you see it drop significantly. often times the alternator can have a broken diode that will suck the life out of a battery and yet still charge the battery. start with the alternator. go back to one battery for these tests remove the stuff in between the two batteries. yeah i did all that and found about a 0.7 amp draw unless i remove the iod fuse which seems high to me and a 0.46 amp draw with the iod fuse in but the seatbelt timing control module unplugged. i think ill just continue to pull the iod fuse when it will be parked for a while. i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps .

From : peterd

on fri 04 jan 2008 003840 gmt ed h. edo.hart@verizon.net wrote yeah i did all that and found about a 0.7 amp draw unless i remove the iod fuse which seems high to me 0.7 is high... and a 0.46 amp draw with the iod fuse in but the seatbelt timing control module unplugged. 0.46 is borderline. best below 0.40 if you can. generally speaking make sure your test is done about 30 minutes after the last thing done on the vehicle close doors dont reopen them etc. wait 30 minutes then test. some circuits will draw current for a while then shut themselves off after an predetermined interval. .

From : ed h

on fri 04 jan 2008 003840 gmt ed h. edo.hart@verizon.net wrote yeah i did all that and found about a 0.7 amp draw unless i remove the iod fuse which seems high to me 0.7 is high... and a 0.46 amp draw with the iod fuse in but the seatbelt timing control module unplugged. 0.46 is borderline. best below 0.40 if you can. generally speaking make sure your test is done about 30 minutes after the last thing done on the vehicle close doors dont reopen them etc. wait 30 minutes then test. some circuits will draw current for a while then shut themselves off after an predetermined interval. thanks. i know the ctm should shut off after about 2 minutes and the sctm after about 30 minutes. the problem is my digital multimeter shuts off after 15 minutes and my ammeter isnt sensitive enough to see a difference. i should get an old fashioned analog multimeter with the correct sensitivity. everything is working at least for now so ive learned how to live with it. .

From : roy

had a very similar problem ... if its a quad cab let me know. ill let you know what i found with mine. gotta ask wtf does the number of doors have to do with it .

From : fearless fred

had a very similar problem ... if its a quad cab let me know. ill let you know what i found with mine. fred put a dc ammeter in line with your battery and cable and see how many amps its drawing and then disconnect one thing at a time until you see it drop significantly. often times the alternator can have a broken diode that will suck the life out of a battery and yet still charge the battery. start with the alternator. go back to one battery for these tests remove the stuff in between the two batteries. i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps .

From : fearless fred

the quad cab has a motion sensor under the seat as the seat belts arent anchored to the door posts. there is a wiring harness under the seat that connects to the motion sensing device to lock the seat belts in case of collision. the plug that connects this harness under the seat shorts and you have current flowing all the time. if you would like to know how to fix this drop me a note. drop the j in the email address. fred had a very similar problem ... if its a quad cab let me know. ill let you know what i found with mine. it is a quad cab. fred put a dc ammeter in line with your battery and cable and see how many amps its drawing and then disconnect one thing at a time until you see it drop significantly. often times the alternator can have a broken diode that will suck the life out of a battery and yet still charge the battery. start with the alternator. go back to one battery for these tests remove the stuff in between the two batteries. i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps .

From : fearless fred

hey roy! it has to do with the seat belt system they had to come up with for the quad cab. belts are not attached to the body but to the seat structure. they are electrically locked in a collision. fred had a very similar problem ... if its a quad cab let me know. ill let you know what i found with mine. gotta ask wtf does the number of doors have to do with it .

From : peterd

on fri 11 jan 2008 011746 gmt fearless fred fjxallen@shaw.ca wrote the quad cab has a motion sensor under the seat as the seat belts arent anchored to the door posts. there is a wiring harness under the seat that connects to the motion sensing device to lock the seat belts in case of collision. the plug that connects this harness under the seat shorts and you have current flowing all the time. if you would like to know how to fix this drop me a note. maybe you could post it here that way it will be in the archives for future searches... .

From : ed h

had a very similar problem ... if its a quad cab let me know. ill let you know what i found with mine. it is a quad cab. fred put a dc ammeter in line with your battery and cable and see how many amps its drawing and then disconnect one thing at a time until you see it drop significantly. often times the alternator can have a broken diode that will suck the life out of a battery and yet still charge the battery. start with the alternator. go back to one battery for these tests remove the stuff in between the two batteries. i have a 99 ram that i havent driven in about 14 days. this morning the main battery was dead the seat belt tensioners wouldnt even release because they had no power. i suspect i may have to replace the main battery after being drained so thoroughly. i have a battery isolator/combiner which allowed me to start the truck and after a few minutes of charging it idled smoothly and i was able to drive it the rest of the day without incident. the main battery is only a few years old. it has sat for up to a week before without any problem. i havent had a chance to have the main battery tested or to check my truck off current draw. so either... 1 the main battery needs service/replacement. 2 the isolator/combiner is drawing current from the main battery. 3 i have a current draw somewhere unrelated to the isolator/combiner. 4 14 days is too long to allow the truck to sit without a battery maintainer. what is the normal current draw while the truck is shutdown and how many days should i expect a stock or replacement of like kind battery to sit idle and still be able to provide cranking amps .

From : fearless fred

hi guys! finally got a chance to have a look at the truck in storage. the fix is to splice the light blue conductor going into the multi conductor plug under the drivers seat. cut the wire on both sides of the plug and butt splice it around the connector. the problem is an internal short in the multi conductor plug under the seat that develops over time. sorry for the delay. fred sorry guys ... been very busy lately and truck is in storage. i will go over there this week and get the info on which conductor on that harness that you have to cut and splice through. you have to bypass the plug or replace the wiring harness under that seat to fix this problem. fred on fri 11 jan 2008 011746 gmt fearless fred fjxallen@shaw.ca wrote the quad cab has a motion sensor under the seat as the seat belts arent anchored to the door posts. there is a wiring harness under the seat that connects to the motion sensing device to lock the seat belts in case of collision. the plug that connects this harness under the seat shorts and you have current flowing all the time. if you would like to know how to fix this drop me a note. maybe you could post it here that way it will be in the archives for future searches... really! if this guy has the fix... guess we need the jaws of life to pry the answer out of him. ed has had this problem for a few weeks. im sure he would like to see it posred as well. .

From : roy

on fri 11 jan 2008 011746 gmt fearless fred fjxallen@shaw.ca wrote the quad cab has a motion sensor under the seat as the seat belts arent anchored to the door posts. there is a wiring harness under the seat that connects to the motion sensing device to lock the seat belts in case of collision. the plug that connects this harness under the seat shorts and you have current flowing all the time. if you would like to know how to fix this drop me a note. maybe you could post it here that way it will be in the archives for future searches... really! if this guy has the fix... guess we need the jaws of life to pry the answer out of him. ed has had this problem for a few weeks. im sure he would like to see it posred as well. .

From : fearless fred

sorry guys ... been very busy lately and truck is in storage. i will go over there this week and get the info on which conductor on that harness that you have to cut and splice through. you have to bypass the plug or replace the wiring harness under that seat to fix this problem. fred on fri 11 jan 2008 011746 gmt fearless fred fjxallen@shaw.ca wrote the quad cab has a motion sensor under the seat as the seat belts arent anchored to the door posts. there is a wiring harness under the seat that connects to the motion sensing device to lock the seat belts in case of collision. the plug that connects this harness under the seat shorts and you have current flowing all the time. if you would like to know how to fix this drop me a note. maybe you could post it here that way it will be in the archives for future searches... really! if this guy has the fix... guess we need the jaws of life to pry the answer out of him. ed has had this problem for a few weeks. im sure he would like to see it posred as well. .