Re: jeep pcm bypass for "real" alternator
 

Did you make sure the battery is connect to alternator's battery
terminal, and that it's trigger wire turns on with the ignition, with a volt
meter?
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

<h0pper@hotmail.com> wrote in message
news:1172612792.743745.326980@t69g2000cwt.googlegr oups.com
>
> ok heres the deal.. im getting a high field coil voltage (around 11)
> all the time.. lights, wipers and heater blower on or off makes no
> difference.. but charging voltage is always low. so that points me
> back toward the alternator, only problem is I had the alt. tested at
> autozone before i installed it.. so now im stuck again.. i guess ill
> take the alt. back off and have them test it again... if it comes
> back fine what would be my next logical step to getting this thing
> running? thnx again for the help j
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: jeep pcm bypass for "real" alternator
 

Did you make sure the battery is connect to alternator's battery
terminal, and that it's trigger wire turns on with the ignition, with a volt
meter?
God Bless America, Bill 0|||||||0
mailto:-------------------- http://www.----------.com/

<h0pper@hotmail.com> wrote in message
news:1172612792.743745.326980@t69g2000cwt.googlegr oups.com
>
> ok heres the deal.. im getting a high field coil voltage (around 11)
> all the time.. lights, wipers and heater blower on or off makes no
> difference.. but charging voltage is always low. so that points me
> back toward the alternator, only problem is I had the alt. tested at
> autozone before i installed it.. so now im stuck again.. i guess ill
> take the alt. back off and have them test it again... if it comes
> back fine what would be my next logical step to getting this thing
> running? thnx again for the help j
>



--
Posted via a free Usenet account from http://www.teranews.com

Re: jeep pcm bypass for "real" alternator
 

On Feb 27, 5:04 pm, Mike Romain <roma...@sympatico.ca> wrote:
> h0p...@hotmail.com wrote:
> > On Feb 26, 2:19 am, "L.W. \(Bill\) ------ III" <billhug...@cox.net>
> > wrote:
> >>http://minimopar.knizefamily.net/charging.html
> >> God Bless America, Bill 0|||||||0
> >> mailto:LW------...@aol.comhttp://www.----------.com/
>
> >> <h0p...@hotmail.com> wrote in message
>
> >>news:1172470123.460514.266110@h3g2000cwc.googleg roups.com...
>
> >>> hey, ive got a 95 wrangler with a charging problem. i swapped out the
> >>> alt but no good. i took the new alt out and had it tested and it
> >>> tested fine.. i then checked all the charging wires and fuses and
> >>> lights.. the check engine bulb was missing (how odd *sarcasm) i put a
> >>> new one in and guess what?? the check engine light came on!! well
> >>> great. i did key turn thing and it flashed a 41. the field circuit
> >>> generator code... i check the continuity on the wires the manual
> >>> indicates.. they are fine. great now im thinking i need a pcm.
> >>> i asked around and someone said i could bypass the pcm and hook up an
> >>> older voltage regulator out of an old pick up (i got new one for a 77
> >>> ram charger) my problem is i dont quite now how to do this... im
> >>> not real knowledgeable about electronics but im a fast leaner.. would
> >>> anyone mind giving me a rundown on what wires go where? do i need
> >>> to take the alt apart? am i going about this the wrong way, would it
> >>> be easier to fix the problem another way.. any help would be
> >>> great oh and im not worried about the check engine light staying
> >>> on we dont have smog checks here.. thnx again jay
> >> --
> >> Posted via a free Usenet account fromhttp://www.teranews.com
>
> > ok heres the deal.. im getting a high field coil voltage (around 11)
> > all the time.. lights, wipers and heater blower on or off makes no
> > difference.. but charging voltage is always low. so that points me
> > back toward the alternator, only problem is I had the alt. tested at
> > autozone before i installed it.. so now im stuck again.. i guess ill
> > take the alt. back off and have them test it again... if it comes
> > back fine what would be my next logical step to getting this thing
> > running? thnx again for the help j
>
> You are under the impression 11 Volts is 'high'?????
>
> Did you check the ground paths like mentioned earlier?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> (More Off Road album links at bottom of the view page)

yeah the site http://minimopar.knizefamily.net/charging.html says that
"Check to see if the regulator is functioning by starting the engine
and turning all accessories off. The voltage across the alternator
field coil terminals (two small terminals, below the positive output
terminal) should be less than about 5V (roughly). Turn all
accessories on (headlights, brights, fan, rear defrost, radio, etc.)
and measure the field coil voltage again. It should be above about
10V (roughly)."

so i took the alt back up the autozone and had it tested (again) it
passed (again) but the guy said something about the machine doesnt
test the amps the alt is putting out. (which i didnt know) so it
could pass and still be bad. i thought if it passed then it was
good !?!?! so i guess ive got a lot to learn. looks like im in the
market for a new alternator.. at least its probably not the pcm.. i
dont get paid for about a week but ill bump this when i get the new
alt on.. wish me luck! and thanks for the help so far..

Bill, i checked those connections with the meter and they look good.
thanks j

Re: jeep pcm bypass for "real" alternator
 

On Feb 27, 5:04 pm, Mike Romain <roma...@sympatico.ca> wrote:
> h0p...@hotmail.com wrote:
> > On Feb 26, 2:19 am, "L.W. \(Bill\) ------ III" <billhug...@cox.net>
> > wrote:
> >>http://minimopar.knizefamily.net/charging.html
> >> God Bless America, Bill 0|||||||0
> >> mailto:LW------...@aol.comhttp://www.----------.com/
>
> >> <h0p...@hotmail.com> wrote in message
>
> >>news:1172470123.460514.266110@h3g2000cwc.googleg roups.com...
>
> >>> hey, ive got a 95 wrangler with a charging problem. i swapped out the
> >>> alt but no good. i took the new alt out and had it tested and it
> >>> tested fine.. i then checked all the charging wires and fuses and
> >>> lights.. the check engine bulb was missing (how odd *sarcasm) i put a
> >>> new one in and guess what?? the check engine light came on!! well
> >>> great. i did key turn thing and it flashed a 41. the field circuit
> >>> generator code... i check the continuity on the wires the manual
> >>> indicates.. they are fine. great now im thinking i need a pcm.
> >>> i asked around and someone said i could bypass the pcm and hook up an
> >>> older voltage regulator out of an old pick up (i got new one for a 77
> >>> ram charger) my problem is i dont quite now how to do this... im
> >>> not real knowledgeable about electronics but im a fast leaner.. would
> >>> anyone mind giving me a rundown on what wires go where? do i need
> >>> to take the alt apart? am i going about this the wrong way, would it
> >>> be easier to fix the problem another way.. any help would be
> >>> great oh and im not worried about the check engine light staying
> >>> on we dont have smog checks here.. thnx again jay
> >> --
> >> Posted via a free Usenet account fromhttp://www.teranews.com
>
> > ok heres the deal.. im getting a high field coil voltage (around 11)
> > all the time.. lights, wipers and heater blower on or off makes no
> > difference.. but charging voltage is always low. so that points me
> > back toward the alternator, only problem is I had the alt. tested at
> > autozone before i installed it.. so now im stuck again.. i guess ill
> > take the alt. back off and have them test it again... if it comes
> > back fine what would be my next logical step to getting this thing
> > running? thnx again for the help j
>
> You are under the impression 11 Volts is 'high'?????
>
> Did you check the ground paths like mentioned earlier?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> (More Off Road album links at bottom of the view page)

yeah the site http://minimopar.knizefamily.net/charging.html says that
"Check to see if the regulator is functioning by starting the engine
and turning all accessories off. The voltage across the alternator
field coil terminals (two small terminals, below the positive output
terminal) should be less than about 5V (roughly). Turn all
accessories on (headlights, brights, fan, rear defrost, radio, etc.)
and measure the field coil voltage again. It should be above about
10V (roughly)."

so i took the alt back up the autozone and had it tested (again) it
passed (again) but the guy said something about the machine doesnt
test the amps the alt is putting out. (which i didnt know) so it
could pass and still be bad. i thought if it passed then it was
good !?!?! so i guess ive got a lot to learn. looks like im in the
market for a new alternator.. at least its probably not the pcm.. i
dont get paid for about a week but ill bump this when i get the new
alt on.. wish me luck! and thanks for the help so far..

Bill, i checked those connections with the meter and they look good.
thanks j

Re: jeep pcm bypass for "real" alternator
 

On Feb 27, 5:04 pm, Mike Romain <roma...@sympatico.ca> wrote:
> h0p...@hotmail.com wrote:
> > On Feb 26, 2:19 am, "L.W. \(Bill\) ------ III" <billhug...@cox.net>
> > wrote:
> >>http://minimopar.knizefamily.net/charging.html
> >> God Bless America, Bill 0|||||||0
> >> mailto:LW------...@aol.comhttp://www.----------.com/
>
> >> <h0p...@hotmail.com> wrote in message
>
> >>news:1172470123.460514.266110@h3g2000cwc.googleg roups.com...
>
> >>> hey, ive got a 95 wrangler with a charging problem. i swapped out the
> >>> alt but no good. i took the new alt out and had it tested and it
> >>> tested fine.. i then checked all the charging wires and fuses and
> >>> lights.. the check engine bulb was missing (how odd *sarcasm) i put a
> >>> new one in and guess what?? the check engine light came on!! well
> >>> great. i did key turn thing and it flashed a 41. the field circuit
> >>> generator code... i check the continuity on the wires the manual
> >>> indicates.. they are fine. great now im thinking i need a pcm.
> >>> i asked around and someone said i could bypass the pcm and hook up an
> >>> older voltage regulator out of an old pick up (i got new one for a 77
> >>> ram charger) my problem is i dont quite now how to do this... im
> >>> not real knowledgeable about electronics but im a fast leaner.. would
> >>> anyone mind giving me a rundown on what wires go where? do i need
> >>> to take the alt apart? am i going about this the wrong way, would it
> >>> be easier to fix the problem another way.. any help would be
> >>> great oh and im not worried about the check engine light staying
> >>> on we dont have smog checks here.. thnx again jay
> >> --
> >> Posted via a free Usenet account fromhttp://www.teranews.com
>
> > ok heres the deal.. im getting a high field coil voltage (around 11)
> > all the time.. lights, wipers and heater blower on or off makes no
> > difference.. but charging voltage is always low. so that points me
> > back toward the alternator, only problem is I had the alt. tested at
> > autozone before i installed it.. so now im stuck again.. i guess ill
> > take the alt. back off and have them test it again... if it comes
> > back fine what would be my next logical step to getting this thing
> > running? thnx again for the help j
>
> You are under the impression 11 Volts is 'high'?????
>
> Did you check the ground paths like mentioned earlier?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> (More Off Road album links at bottom of the view page)

yeah the site http://minimopar.knizefamily.net/charging.html says that
"Check to see if the regulator is functioning by starting the engine
and turning all accessories off. The voltage across the alternator
field coil terminals (two small terminals, below the positive output
terminal) should be less than about 5V (roughly). Turn all
accessories on (headlights, brights, fan, rear defrost, radio, etc.)
and measure the field coil voltage again. It should be above about
10V (roughly)."

so i took the alt back up the autozone and had it tested (again) it
passed (again) but the guy said something about the machine doesnt
test the amps the alt is putting out. (which i didnt know) so it
could pass and still be bad. i thought if it passed then it was
good !?!?! so i guess ive got a lot to learn. looks like im in the
market for a new alternator.. at least its probably not the pcm.. i
dont get paid for about a week but ill bump this when i get the new
alt on.. wish me luck! and thanks for the help so far..

Bill, i checked those connections with the meter and they look good.
thanks j

Re: jeep pcm bypass for "real" alternator
 

>
> ok heres the deal.. im getting a high field coil voltage (around 11)
> all the time.. lights, wipers and heater blower on or off makes no
> difference.. but charging voltage is always low. so that points me
> back toward the alternator, only problem is I had the alt. tested at
> autozone before i installed it.. so now im stuck again.. i guess ill
> take the alt. back off and have them test it again... if it comes
> back fine what would be my next logical step to getting this thing
> running? thnx again for the help j
>

6 months back I had the same thing going on with my BMW. Alternator tested
good (at Autozone, no less) but battery would not charge. Replaced the
brushes and it worked great. Did the same thing in my '95 Dodge van a month
or so later. For the van it cost me $2 and about an hour. If you are at
all handy with this sort of thing or if there is an shop around that would
replace them I would look that way before I dished the cash for a new alt.

Matt

Re: jeep pcm bypass for "real" alternator
 

>
> ok heres the deal.. im getting a high field coil voltage (around 11)
> all the time.. lights, wipers and heater blower on or off makes no
> difference.. but charging voltage is always low. so that points me
> back toward the alternator, only problem is I had the alt. tested at
> autozone before i installed it.. so now im stuck again.. i guess ill
> take the alt. back off and have them test it again... if it comes
> back fine what would be my next logical step to getting this thing
> running? thnx again for the help j
>

6 months back I had the same thing going on with my BMW. Alternator tested
good (at Autozone, no less) but battery would not charge. Replaced the
brushes and it worked great. Did the same thing in my '95 Dodge van a month
or so later. For the van it cost me $2 and about an hour. If you are at
all handy with this sort of thing or if there is an shop around that would
replace them I would look that way before I dished the cash for a new alt.

Matt

Re: jeep pcm bypass for "real" alternator
 

>
> ok heres the deal.. im getting a high field coil voltage (around 11)
> all the time.. lights, wipers and heater blower on or off makes no
> difference.. but charging voltage is always low. so that points me
> back toward the alternator, only problem is I had the alt. tested at
> autozone before i installed it.. so now im stuck again.. i guess ill
> take the alt. back off and have them test it again... if it comes
> back fine what would be my next logical step to getting this thing
> running? thnx again for the help j
>

6 months back I had the same thing going on with my BMW. Alternator tested
good (at Autozone, no less) but battery would not charge. Replaced the
brushes and it worked great. Did the same thing in my '95 Dodge van a month
or so later. For the van it cost me $2 and about an hour. If you are at
all handy with this sort of thing or if there is an shop around that would
replace them I would look that way before I dished the cash for a new alt.

Matt

Re: jeep pcm bypass for "real" alternator
 

h0pper@hotmail.com wrote:
> On Feb 27, 5:04 pm, Mike Romain <roma...@sympatico.ca> wrote:
>> h0p...@hotmail.com wrote:
>>> On Feb 26, 2:19 am, "L.W. \(Bill\) ------ III" <billhug...@cox.net>
>>> wrote:
>>>> http://minimopar.knizefamily.net/charging.html
>>>> God Bless America, Bill 0|||||||0
>>>> mailto:LW------...@aol.comhttp://www.----------.com/
>>>> <h0p...@hotmail.com> wrote in message
>>>> news:1172470123.460514.266110@h3g2000cwc.googlegro ups.com...
>>>>> hey, ive got a 95 wrangler with a charging problem. i swapped out the
>>>>> alt but no good. i took the new alt out and had it tested and it
>>>>> tested fine.. i then checked all the charging wires and fuses and
>>>>> lights.. the check engine bulb was missing (how odd *sarcasm) i put a
>>>>> new one in and guess what?? the check engine light came on!! well
>>>>> great. i did key turn thing and it flashed a 41. the field circuit
>>>>> generator code... i check the continuity on the wires the manual
>>>>> indicates.. they are fine. great now im thinking i need a pcm.
>>>>> i asked around and someone said i could bypass the pcm and hook up an
>>>>> older voltage regulator out of an old pick up (i got new one for a 77
>>>>> ram charger) my problem is i dont quite now how to do this... im
>>>>> not real knowledgeable about electronics but im a fast leaner.. would
>>>>> anyone mind giving me a rundown on what wires go where? do i need
>>>>> to take the alt apart? am i going about this the wrong way, would it
>>>>> be easier to fix the problem another way.. any help would be
>>>>> great oh and im not worried about the check engine light staying
>>>>> on we dont have smog checks here.. thnx again jay
>>>> --
>>>> Posted via a free Usenet account fromhttp://www.teranews.com
>>> ok heres the deal.. im getting a high field coil voltage (around 11)
>>> all the time.. lights, wipers and heater blower on or off makes no
>>> difference.. but charging voltage is always low. so that points me
>>> back toward the alternator, only problem is I had the alt. tested at
>>> autozone before i installed it.. so now im stuck again.. i guess ill
>>> take the alt. back off and have them test it again... if it comes
>>> back fine what would be my next logical step to getting this thing
>>> running? thnx again for the help j
>> You are under the impression 11 Volts is 'high'?????
>>
>> Did you check the ground paths like mentioned earlier?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)
>
> yeah the site http://minimopar.knizefamily.net/charging.html says that
> "Check to see if the regulator is functioning by starting the engine
> and turning all accessories off. The voltage across the alternator
> field coil terminals (two small terminals, below the positive output
> terminal) should be less than about 5V (roughly). Turn all
> accessories on (headlights, brights, fan, rear defrost, radio, etc.)
> and measure the field coil voltage again. It should be above about
> 10V (roughly)."
>
> so i took the alt back up the autozone and had it tested (again) it
> passed (again) but the guy said something about the machine doesnt
> test the amps the alt is putting out. (which i didnt know) so it
> could pass and still be bad. i thought if it passed then it was
> good !?!?! so i guess ive got a lot to learn. looks like im in the
> market for a new alternator.. at least its probably not the pcm.. i
> dont get paid for about a week but ill bump this when i get the new
> alt on.. wish me luck! and thanks for the help so far..
>
> Bill, i checked those connections with the meter and they look good.
> thanks j
>

Ok, I will try just once more then I will leave you be....

I suspect a bad ground path giving your symptoms just because I have
seen it soo many times before including my own Jeeps.

You have positive cables to the alternator which appear to work, but it
also needs a ground path to complete the circuit.

I would recommend you run a battery booster cable from the battery
negative to the alternator 'case' to see what happens to the charging
voltage as measured at the battery posts with a meter.

I then would recommend you run this same booster cable to a clean bolt
on the body of the vehicle and check the charging rate with a meter at
the battery posts.

If the charging doesn't change, then your grounds are likely ok.

Mike

Re: jeep pcm bypass for "real" alternator
 

h0pper@hotmail.com wrote:
> On Feb 27, 5:04 pm, Mike Romain <roma...@sympatico.ca> wrote:
>> h0p...@hotmail.com wrote:
>>> On Feb 26, 2:19 am, "L.W. \(Bill\) ------ III" <billhug...@cox.net>
>>> wrote:
>>>> http://minimopar.knizefamily.net/charging.html
>>>> God Bless America, Bill 0|||||||0
>>>> mailto:LW------...@aol.comhttp://www.----------.com/
>>>> <h0p...@hotmail.com> wrote in message
>>>> news:1172470123.460514.266110@h3g2000cwc.googlegro ups.com...
>>>>> hey, ive got a 95 wrangler with a charging problem. i swapped out the
>>>>> alt but no good. i took the new alt out and had it tested and it
>>>>> tested fine.. i then checked all the charging wires and fuses and
>>>>> lights.. the check engine bulb was missing (how odd *sarcasm) i put a
>>>>> new one in and guess what?? the check engine light came on!! well
>>>>> great. i did key turn thing and it flashed a 41. the field circuit
>>>>> generator code... i check the continuity on the wires the manual
>>>>> indicates.. they are fine. great now im thinking i need a pcm.
>>>>> i asked around and someone said i could bypass the pcm and hook up an
>>>>> older voltage regulator out of an old pick up (i got new one for a 77
>>>>> ram charger) my problem is i dont quite now how to do this... im
>>>>> not real knowledgeable about electronics but im a fast leaner.. would
>>>>> anyone mind giving me a rundown on what wires go where? do i need
>>>>> to take the alt apart? am i going about this the wrong way, would it
>>>>> be easier to fix the problem another way.. any help would be
>>>>> great oh and im not worried about the check engine light staying
>>>>> on we dont have smog checks here.. thnx again jay
>>>> --
>>>> Posted via a free Usenet account fromhttp://www.teranews.com
>>> ok heres the deal.. im getting a high field coil voltage (around 11)
>>> all the time.. lights, wipers and heater blower on or off makes no
>>> difference.. but charging voltage is always low. so that points me
>>> back toward the alternator, only problem is I had the alt. tested at
>>> autozone before i installed it.. so now im stuck again.. i guess ill
>>> take the alt. back off and have them test it again... if it comes
>>> back fine what would be my next logical step to getting this thing
>>> running? thnx again for the help j
>> You are under the impression 11 Volts is 'high'?????
>>
>> Did you check the ground paths like mentioned earlier?
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)
>
> yeah the site http://minimopar.knizefamily.net/charging.html says that
> "Check to see if the regulator is functioning by starting the engine
> and turning all accessories off. The voltage across the alternator
> field coil terminals (two small terminals, below the positive output
> terminal) should be less than about 5V (roughly). Turn all
> accessories on (headlights, brights, fan, rear defrost, radio, etc.)
> and measure the field coil voltage again. It should be above about
> 10V (roughly)."
>
> so i took the alt back up the autozone and had it tested (again) it
> passed (again) but the guy said something about the machine doesnt
> test the amps the alt is putting out. (which i didnt know) so it
> could pass and still be bad. i thought if it passed then it was
> good !?!?! so i guess ive got a lot to learn. looks like im in the
> market for a new alternator.. at least its probably not the pcm.. i
> dont get paid for about a week but ill bump this when i get the new
> alt on.. wish me luck! and thanks for the help so far..
>
> Bill, i checked those connections with the meter and they look good.
> thanks j
>

Ok, I will try just once more then I will leave you be....

I suspect a bad ground path giving your symptoms just because I have
seen it soo many times before including my own Jeeps.

You have positive cables to the alternator which appear to work, but it
also needs a ground path to complete the circuit.

I would recommend you run a battery booster cable from the battery
negative to the alternator 'case' to see what happens to the charging
voltage as measured at the battery posts with a meter.

I then would recommend you run this same booster cable to a clean bolt
on the body of the vehicle and check the charging rate with a meter at
the battery posts.

If the charging doesn't change, then your grounds are likely ok.

Mike