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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
On Feb 28, 9:45 am, Mike Romain <roma...@sympatico.ca> wrote:
> h0p...@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.googl egroups.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 sitehttp://minimopar.knizefamily.net/charging.htmlsays 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 i had a problem posting yesterday.. i posted a reply but it didnt go through.. and when i re-replied i forgot to mention that i did what you said.. the volts across the batt terminals and then move the negative lead of my meter to the alt case.. i got the same volts as across the batt terminals.. so if im getting the same volts from the alt case and positive battery terminal that im getting from the both battery terminals the batt terminals, the ground would most likely be good right? but ill try the booster cable thing.. ill take any help i can get and try anything free. lol j |
Re: jeep pcm bypass for "real" alternator
On Feb 28, 9:45 am, Mike Romain <roma...@sympatico.ca> wrote:
> h0p...@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.googl egroups.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 sitehttp://minimopar.knizefamily.net/charging.htmlsays 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 i had a problem posting yesterday.. i posted a reply but it didnt go through.. and when i re-replied i forgot to mention that i did what you said.. the volts across the batt terminals and then move the negative lead of my meter to the alt case.. i got the same volts as across the batt terminals.. so if im getting the same volts from the alt case and positive battery terminal that im getting from the both battery terminals the batt terminals, the ground would most likely be good right? but ill try the booster cable thing.. ill take any help i can get and try anything free. lol j |
Re: jeep pcm bypass for "real" alternator
On Feb 28, 9:45 am, Mike Romain <roma...@sympatico.ca> wrote:
> h0p...@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.googl egroups.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 sitehttp://minimopar.knizefamily.net/charging.htmlsays 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 i had a problem posting yesterday.. i posted a reply but it didnt go through.. and when i re-replied i forgot to mention that i did what you said.. the volts across the batt terminals and then move the negative lead of my meter to the alt case.. i got the same volts as across the batt terminals.. so if im getting the same volts from the alt case and positive battery terminal that im getting from the both battery terminals the batt terminals, the ground would most likely be good right? but ill try the booster cable thing.. ill take any help i can get and try anything free. lol j |
Re: jeep pcm bypass for "real" alternator
On Feb 26, 5:50 am, Old Crow <wallisc...@yahoo.com> wrote:
> On 25 Feb 2007 22:08:43 -0800, h0p...@hotmail.com wrote: > > > > >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 > > I think the deal is to install one of those "one wire" alternators and > live with the Check Engine light. Seems the regulator is built into > the PCM on that model(same one I have). I got lucky and it was just > the brushes on mine. > -- > Old Crow "Yol Bolsun!" > '82 FLTC-P "Miss Pearl" > '74 XLH chopper(gone but not forgotten) > BS#133, SENS, TOMKAT, MAMBM > > -- > Posted via a free Usenet account fromhttp://www.teranews.com where is everyone getting the brushes?? everywhere i call doesn't have them. |
Re: jeep pcm bypass for "real" alternator
On Feb 26, 5:50 am, Old Crow <wallisc...@yahoo.com> wrote:
> On 25 Feb 2007 22:08:43 -0800, h0p...@hotmail.com wrote: > > > > >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 > > I think the deal is to install one of those "one wire" alternators and > live with the Check Engine light. Seems the regulator is built into > the PCM on that model(same one I have). I got lucky and it was just > the brushes on mine. > -- > Old Crow "Yol Bolsun!" > '82 FLTC-P "Miss Pearl" > '74 XLH chopper(gone but not forgotten) > BS#133, SENS, TOMKAT, MAMBM > > -- > Posted via a free Usenet account fromhttp://www.teranews.com where is everyone getting the brushes?? everywhere i call doesn't have them. |
Re: jeep pcm bypass for "real" alternator
On Feb 26, 5:50 am, Old Crow <wallisc...@yahoo.com> wrote:
> On 25 Feb 2007 22:08:43 -0800, h0p...@hotmail.com wrote: > > > > >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 > > I think the deal is to install one of those "one wire" alternators and > live with the Check Engine light. Seems the regulator is built into > the PCM on that model(same one I have). I got lucky and it was just > the brushes on mine. > -- > Old Crow "Yol Bolsun!" > '82 FLTC-P "Miss Pearl" > '74 XLH chopper(gone but not forgotten) > BS#133, SENS, TOMKAT, MAMBM > > -- > Posted via a free Usenet account fromhttp://www.teranews.com where is everyone getting the brushes?? everywhere i call doesn't have them. |
Re: jeep pcm bypass for "real" alternator
h0pper@hotmail.com wrote:
> On Feb 28, 9:45 am, Mike Romain <roma...@sympatico.ca> wrote: >> h0p...@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 sitehttp://minimopar.knizefamily.net/charging.htmlsays 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 > > i had a problem posting yesterday.. i posted a reply but it didnt go > through.. and when i re-replied i forgot to mention that i did what > you said.. the volts across the batt terminals and then move the > negative lead of my meter to the alt case.. i got the same volts as > across the batt terminals.. so if im getting the same volts from the > alt case and positive battery terminal that im getting from the both > battery terminals the batt terminals, the ground would most likely be > good right? but ill try the booster cable thing.. ill take any help > i can get and try anything free. lol j > The other spot would be the body to see if the volts are there too. Mike |
Re: jeep pcm bypass for "real" alternator
h0pper@hotmail.com wrote:
> On Feb 28, 9:45 am, Mike Romain <roma...@sympatico.ca> wrote: >> h0p...@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 sitehttp://minimopar.knizefamily.net/charging.htmlsays 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 > > i had a problem posting yesterday.. i posted a reply but it didnt go > through.. and when i re-replied i forgot to mention that i did what > you said.. the volts across the batt terminals and then move the > negative lead of my meter to the alt case.. i got the same volts as > across the batt terminals.. so if im getting the same volts from the > alt case and positive battery terminal that im getting from the both > battery terminals the batt terminals, the ground would most likely be > good right? but ill try the booster cable thing.. ill take any help > i can get and try anything free. lol j > The other spot would be the body to see if the volts are there too. Mike |
Re: jeep pcm bypass for "real" alternator
h0pper@hotmail.com wrote:
> On Feb 28, 9:45 am, Mike Romain <roma...@sympatico.ca> wrote: >> h0p...@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 sitehttp://minimopar.knizefamily.net/charging.htmlsays 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 > > i had a problem posting yesterday.. i posted a reply but it didnt go > through.. and when i re-replied i forgot to mention that i did what > you said.. the volts across the batt terminals and then move the > negative lead of my meter to the alt case.. i got the same volts as > across the batt terminals.. so if im getting the same volts from the > alt case and positive battery terminal that im getting from the both > battery terminals the batt terminals, the ground would most likely be > good right? but ill try the booster cable thing.. ill take any help > i can get and try anything free. lol j > The other spot would be the body to see if the volts are there too. Mike |
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