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External
Since: Mar 11, 2008
Posts: 4
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(Msg. 1) Posted: Tue Mar 11, 2008 2:46 pm
Post subject: Key off battery drain/discharge  Get Alert
Archived from groups: alt>trucks>ford (more info?)
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Hello
I have a '90 F150, 4.9L inline 6, manual transmission.
The battery will drain until it is dead just while sitting in my
driveway. I disconnected the negative terminal, and checked the amperage
between the negative battery terminal and the disconnected battery
cable. With key off, I'm getting around 370 milliamps. I have removed
all the fuses under the dash, and got the same reading. This is a new
battery.
A set of wires, enclosed in black tubing, was connected with wiring
harness to the side of the alternator. I guess this is for the voltage
regulator. This set of wires was routed behind the alternator, and the
tubing apparently had melted to the back of the alternator. The tubing
is damaged, but the wire insulation seems to be intact. Here is a
picture... http://members.localnet.com/~eddie180/Misc/100_2286w.jpg
I disconnected this set of wires, and got the same reading. However
after reconnecting, I was getting well over 1 amp. I have also
Also, this might be normal, but when reconnecting the battery, or
putting my meter between the negative terminal and the negative battery
cable, there is an audible 'click', which I guess is a relay around the
drivers side fender. And a another sound down by the starter. The
current will surge to over 40 amps, then drop back to 375 milliamps.
I have not checked voltage across the battery while the engine is running.
Any help would be appreciated
Eddie |
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External
Since: Mar 09, 2008
Posts: 1
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(Msg. 2) Posted: Tue Mar 11, 2008 2:46 pm
Post subject: Re: Key off battery drain/discharge Get Alert [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Mar 11, 11:46 am, E <eddie....DeleteThis@xlxoxcxaxlxnxextx.com> wrote:
> Hello
>
> I have a '90 F150, 4.9L inline 6, manual transmission.
>
> The battery will drain until it is dead just while sitting in my
> driveway. I disconnected the negative terminal, and checked the amperage
> between the negative battery terminal and the disconnected battery
> cable. With key off, I'm getting around 370 milliamps. I have removed
> all the fuses under the dash, and got the same reading. This is a new
> battery.
>
> A set of wires, enclosed in black tubing, was connected with wiring
> harness to the side of the alternator. I guess this is for the voltage
> regulator. This set of wires was routed behind the alternator, and the
> tubing apparently had melted to the back of the alternator. The tubing
> is damaged, but the wire insulation seems to be intact. Here is a
> picture...http://members.localnet.com/~eddie180/Misc/100_2286w.jpg
>
> I disconnected this set of wires, and got the same reading. However
> after reconnecting, I was getting well over 1 amp. I have also
>
> Also, this might be normal, but when reconnecting the battery, or
> putting my meter between the negative terminal and the negative battery
> cable, there is an audible 'click', which I guess is a relay around the
> drivers side fender. And a another sound down by the starter. The
> current will surge to over 40 amps, then drop back to 375 milliamps.
>
> I have not checked voltage across the battery while the engine is running.
>
> Any help would be appreciated
> Eddie
Sounds like the ignition is stuck on, with the click. |
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External
Since: Mar 11, 2008
Posts: 4
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(Msg. 3) Posted: Tue Mar 11, 2008 4:59 pm
Post subject: Re: Key off battery drain/discharge Get Alert [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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m_a_volkerts.RemoveThis@yahoo.com wrote:
> On Mar 11, 11:46 am, E <eddie....RemoveThis@xlxoxcxaxlxnxextx.com> wrote:
>> Hello
>>
>> I have a '90 F150, 4.9L inline 6, manual transmission.
>>
>> The battery will drain until it is dead just while sitting in my
>> driveway. I disconnected the negative terminal, and checked the amperage
>> between the negative battery terminal and the disconnected battery
>> cable. With key off, I'm getting around 370 milliamps. I have removed
>> all the fuses under the dash, and got the same reading. This is a new
>> battery.
>>
>> A set of wires, enclosed in black tubing, was connected with wiring
>> harness to the side of the alternator. I guess this is for the voltage
>> regulator. This set of wires was routed behind the alternator, and the
>> tubing apparently had melted to the back of the alternator. The tubing
>> is damaged, but the wire insulation seems to be intact. Here is a
>> picture...http://members.localnet.com/~eddie180/Misc/100_2286w.jpg
>>
>> I disconnected this set of wires, and got the same reading. However
>> after reconnecting, I was getting well over 1 amp. I have also
>>
>> Also, this might be normal, but when reconnecting the battery, or
>> putting my meter between the negative terminal and the negative battery
>> cable, there is an audible 'click', which I guess is a relay around the
>> drivers side fender. And a another sound down by the starter. The
>> current will surge to over 40 amps, then drop back to 375 milliamps.
>>
>> I have not checked voltage across the battery while the engine is running.
>>
>> Any help would be appreciated
>> Eddie
>
> Sounds like the ignition is stuck on, with the click.
Thanks, I'll check into that.
I disconnected both wiring harnesses going to the alternator, and pulled
all the fuses again, and got ~370 milliamperes.
Like I mentioned before, when first putting the multimeter in the
circuit, there is a surge of over 40amps, then it drops back to ~370
milliamperes. I read in a web forum that "Ford specifies 500mA (0.5A)
maximum parasitic drain"...
http://www.fordf150.net/forums/45005-ford-f150-key-off-battery-drain.html
Going by that, it is under the limit.
I checked the voltage across the battery terminals while the engine was
running it was over 14V. I'm starting to wonder if it is intermittent. >> Stay informed about: Key off battery drain/discharge |
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External
Since: Jul 28, 2007
Posts: 29
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(Msg. 4) Posted: Wed Mar 12, 2008 6:17 pm
Post subject: Re: Key off battery drain/discharge Get Alert [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"E" <eddie180 RemoveThis @xlxoxcxaxlxnxextx.com> wrote in message
news:13tdjo3ft3edu59@corp.supernews.com...
>
> Hello
>
> I have a '90 F150, 4.9L inline 6, manual transmission.
>
> The battery will drain until it is dead just while sitting in my driveway.
> I disconnected the negative terminal, and checked the amperage between the
> negative battery terminal and the disconnected battery cable. With key
> off, I'm getting around 370 milliamps. I have removed all the fuses under
> the dash, and got the same reading. This is a new battery.
>
> A set of wires, enclosed in black tubing, was connected with wiring
> harness to the side of the alternator. I guess this is for the voltage
> regulator. This set of wires was routed behind the alternator, and the
> tubing apparently had melted to the back of the alternator. The tubing is
> damaged, but the wire insulation seems to be intact. Here is a picture...
> http://members.localnet.com/~eddie180/Misc/100_2286w.jpg
>
> I disconnected this set of wires, and got the same reading. However after
> reconnecting, I was getting well over 1 amp. I have also
>
> Also, this might be normal, but when reconnecting the battery, or putting
> my meter between the negative terminal and the negative battery cable,
> there is an audible 'click', which I guess is a relay around the drivers
> side fender. And a another sound down by the starter. The current will
> surge to over 40 amps, then drop back to 375 milliamps.
>
> I have not checked voltage across the battery while the engine is running.
>
> Any help would be appreciated
> Eddie
I have had two Fords that had bad diodes in the alternators.
When they go they let the battery drain down, seemed like
it was overnight or maybe a couple days.
I never figured a fix except to buy a new alternator. >> Stay informed about: Key off battery drain/discharge |
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External
Since: Mar 11, 2008
Posts: 4
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(Msg. 5) Posted: Thu Mar 13, 2008 8:50 pm
Post subject: Re: Key off battery drain/discharge Get Alert [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Scott wrote:
> "E" <eddie180 DeleteThis @xlxoxcxaxlxnxextx.com> wrote in message
> news:13tdjo3ft3edu59@corp.supernews.com...
>> Hello
>>
>> I have a '90 F150, 4.9L inline 6, manual transmission.
>>
>> The battery will drain until it is dead just while sitting in my driveway.
>> I disconnected the negative terminal, and checked the amperage between the
>> negative battery terminal and the disconnected battery cable. With key
>> off, I'm getting around 370 milliamps. I have removed all the fuses under
>> the dash, and got the same reading. This is a new battery.
>>
>> A set of wires, enclosed in black tubing, was connected with wiring
>> harness to the side of the alternator. I guess this is for the voltage
>> regulator. This set of wires was routed behind the alternator, and the
>> tubing apparently had melted to the back of the alternator. The tubing is
>> damaged, but the wire insulation seems to be intact. Here is a picture...
>> http://members.localnet.com/~eddie180/Misc/100_2286w.jpg
>>
>> I disconnected this set of wires, and got the same reading. However after
>> reconnecting, I was getting well over 1 amp. I have also
>>
>
> I have had two Fords that had bad diodes in the alternators.
> When they go they let the battery drain down, seemed like
> it was overnight or maybe a couple days.
> I never figured a fix except to buy a new alternator.
>
I have read about other owners with the bad diodes problem.
But I have disconnected both wiring harnesses from the alternator and I
still get the same amount of current draw, around 370 milliamperes. I
get over 14 volts across the battery while the engine is running.
Maybe the diode problem is intermittent. I may just take the plunge,
change it out and see what happens.
Thanks
Eddie >> Stay informed about: Key off battery drain/discharge |
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External
Since: Jan 13, 2007
Posts: 70
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(Msg. 6) Posted: Wed Mar 19, 2008 1:40 am
Post subject: Re: Key off battery drain/discharge Get Alert [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Tue, 11 Mar 2008 14:46:08 -0400, E <eddie180.RemoveThis@xlxoxcxaxlxnxextx.com>
wrote:
>
>Hello
>
>I have a '90 F150, 4.9L inline 6, manual transmission.
>
>The battery will drain until it is dead just while sitting in my
>driveway. I disconnected the negative terminal, and checked the amperage
>between the negative battery terminal and the disconnected battery
>cable. With key off, I'm getting around 370 milliamps. I have removed
>all the fuses under the dash, and got the same reading. This is a new
>battery.
>
>A set of wires, enclosed in black tubing, was connected with wiring
>harness to the side of the alternator. I guess this is for the voltage
>regulator. This set of wires was routed behind the alternator, and the
>tubing apparently had melted to the back of the alternator. The tubing
>is damaged, but the wire insulation seems to be intact. Here is a
>picture... http://members.localnet.com/~eddie180/Misc/100_2286w.jpg
>
>I disconnected this set of wires, and got the same reading. However
>after reconnecting, I was getting well over 1 amp. I have also
>
>Also, this might be normal, but when reconnecting the battery, or
>putting my meter between the negative terminal and the negative battery
>cable, there is an audible 'click', which I guess is a relay around the
>drivers side fender. And a another sound down by the starter. The
>current will surge to over 40 amps, then drop back to 375 milliamps.
>
>I have not checked voltage across the battery while the engine is running.
>
>Any help would be appreciated
>Eddie
I had an old T-Bird do this and it about drove me crazy trying to
track it down. Turned out of be a short in the solenoid switch.
Replaced it and the problem went away. >> Stay informed about: Key off battery drain/discharge |
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External
Since: Mar 11, 2008
Posts: 4
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(Msg. 7) Posted: Thu Mar 20, 2008 10:40 pm
Post subject: Re: Key off battery drain/discharge Get Alert [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Wed, 19 Mar 2008 01:40:43 -0400, Tim J. wrote:
> I had an old T-Bird do this and it about drove me crazy trying to
> track it down. Turned out of be a short in the solenoid switch.
> Replaced it and the problem went away.
This wouldn't surprise me in my F150. I remember over the summer a couple
times I noticed an electrical noise, relay, small motor, of some sort that
ran momentarily while the key was out of the ignition. I haven't made any
more attempts to troubleshoot recently. Just am leaving the negative
battery cable disconnected for now.
There is a thread in alt.ford.trucks (and maybe some others) that I just
found that I'm going to follow. The original poster has same year F250
with a battery drain.
Thanks >> Stay informed about: Key off battery drain/discharge |
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External
Since: Apr 01, 2008
Posts: 1
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(Msg. 8) Posted: Sat Mar 22, 2008 1:38 pm
Post subject: Re: Key off battery drain/discharge Get Alert [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Mar 11, 3:59 pm, E <eddie... DeleteThis @xlxoxcxaxlxnxextx.com> wrote:
> m_a_volke... DeleteThis @yahoo.com wrote:
> > On Mar 11, 11:46 am, E <eddie... DeleteThis @xlxoxcxaxlxnxextx.com> wrote:
> >> Hello
>
> >> I have a '90 F150, 4.9L inline 6, manual transmission.
>
> >> The battery will drain until it is dead just while sitting in my
> >> driveway. I disconnected the negative terminal, and checked the amperage
> >> between the negative battery terminal and the disconnected battery
> >> cable. With key off, I'm getting around 370 milliamps. I have removed
> >> all the fuses under the dash, and got the same reading. This is a new
> >> battery.
>
> >> A set of wires, enclosed in black tubing, was connected with wiring
> >> harness to the side of the alternator. I guess this is for the voltage
> >> regulator. This set of wires was routed behind the alternator, and the
> >> tubing apparently had melted to the back of the alternator. The tubing
> >> is damaged, but the wire insulation seems to be intact. Here is a
> >> picture...http://members.localnet.com/~eddie180/Misc/100_2286w.jpg
>
> >> I disconnected this set of wires, and got the same reading. However
> >> after reconnecting, I was getting well over 1 amp. I have also
>
> >> Also, this might be normal, but when reconnecting the battery, or
> >> putting my meter between the negative terminal and the negative battery
> >> cable, there is an audible 'click', which I guess is a relay around the
> >> drivers side fender. And a another sound down by the starter. The
> >> current will surge to over 40 amps, then drop back to 375 milliamps.
>
> >> I have not checked voltage across the battery while the engine is running.
>
> >> Any help would be appreciated
> >> Eddie
>
> > Sounds like the ignition is stuck on, with the click.
>
> Thanks, I'll check into that.
>
> I disconnected both wiring harnesses going to the alternator, and pulled
> all the fuses again, and got ~370 milliamperes.
>
> Like I mentioned before, when first putting the multimeter in the
> circuit, there is a surge of over 40amps, then it drops back to ~370
> milliamperes. I read in a web forum that "Ford specifies 500mA (0.5A)
> maximum parasitic drain"...
>
> http://www.fordf150.net/forums/45005-ford-f150-key-off-battery-drain....
>
> Going by that, it is under the limit.
>
> I checked the voltage across the battery terminals while the engine was
> running it was over 14V. I'm starting to wonder if it is intermittent.- Hide quoted text -
>
> - Show quoted text -
Here's sopmething else. does your truck have electric door locks? a
friend of mine had the same pickup youare describing,a nd when he got
it it had a fresh alternator on it. he brought it to me and it tested
fine. still had battery problems. I came down to his shop and looked
at it and it was odd. I would disconnect the ground cable and tochi it
back to the bat. terminal and we'd hear an ever so slicht noise. Not a
click but someting faint and odd. after listening around, he noticed
that the manual door lock plunger was wiggling on the drivers side
door. What was going on was that his electric door lock had a
defective relay and was trynig to lock the door but couldn't get it
done,and was shorting itself out thus draining the battery overnight.
he disconnected the electric locks and had no more problems.
i still think the problem is in your alternator, though. >> Stay informed about: Key off battery drain/discharge |
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