HELP,,electrical nightmare 90YJ 2.5
03-06-2005, 11:05 AM
#91
Guest
Posts: n/a
Re: HELP,,electrical nightmare 90YJ 2.5
Mike,
re-cleaned all connectons, wire-brush, electrical cleaner, sandpaper,
electrical cleaner, whiped with rag,
reconnected all wires, to relay and alt,
re-tested, with volt-meter,
Batt engin off,
12.49V
-Batt-to-Relay,12.49V
-Batt-to-post on back of Alt,12.49V
Running at idle speed,
Batt 12.25V
-Batt-to-Relay,12.24V
-Batt-to post on back of Alt,12.24
johnp
re-cleaned all connectons, wire-brush, electrical cleaner, sandpaper,
electrical cleaner, whiped with rag,
reconnected all wires, to relay and alt,
re-tested, with volt-meter,
Batt engin off,
12.49V
-Batt-to-Relay,12.49V
-Batt-to-post on back of Alt,12.49V
Running at idle speed,
Batt 12.25V
-Batt-to-Relay,12.24V
-Batt-to post on back of Alt,12.24
johnp
03-06-2005, 11:17 AM
#95
Guest
Posts: n/a
Re: HELP,,electrical nightmare 90YJ 2.5
Ok, the alternator is not turning on.
The small brown wire should have 10-14 volts on it when the engine is
running or when the key is in the 'on' position. This wire should/could
be lower volts than the direct power line so no worries, but it must
have 10 volts at least.
I think you said it had power right?
If so, take a hammer and give the alternator case a whack while it is
running. (stuck brushes syndrome)
If that doesn't bring it up to 14V+, shut it off and see if you can hand
slip the alternator pulley in the belt. If it slips, the alternator
won't turn on likely, so tighten or replace it if already tight.
The other 'real' sneaky one is the small white plug on the back of the
alternator...
The ****** changed the order of the pins right around 1990. So the
brown and red wires could just be in the wrong place. Seriously.
They can be removed from the plug with a small screw driver by pushing
down on the clip on the back of the brass piece from the front side and
pulling from the wire side of the plug. You then might have to bend the
clip back up to hold good again.
Check that out and get back to us please.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> re-cleaned all connectons, wire-brush, electrical cleaner, sandpaper,
> electrical cleaner, whiped with rag,
> reconnected all wires, to relay and alt,
>
> re-tested, with volt-meter,
>
> Batt engin off,
> 12.49V
> -Batt-to-Relay,12.49V
> -Batt-to-post on back of Alt,12.49V
>
> Running at idle speed,
>
> Batt 12.25V
> -Batt-to-Relay,12.24V
> -Batt-to post on back of Alt,12.24
>
> johnp
The small brown wire should have 10-14 volts on it when the engine is
running or when the key is in the 'on' position. This wire should/could
be lower volts than the direct power line so no worries, but it must
have 10 volts at least.
I think you said it had power right?
If so, take a hammer and give the alternator case a whack while it is
running. (stuck brushes syndrome)
If that doesn't bring it up to 14V+, shut it off and see if you can hand
slip the alternator pulley in the belt. If it slips, the alternator
won't turn on likely, so tighten or replace it if already tight.
The other 'real' sneaky one is the small white plug on the back of the
alternator...
The ****** changed the order of the pins right around 1990. So the
brown and red wires could just be in the wrong place. Seriously.
They can be removed from the plug with a small screw driver by pushing
down on the clip on the back of the brass piece from the front side and
pulling from the wire side of the plug. You then might have to bend the
clip back up to hold good again.
Check that out and get back to us please.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> re-cleaned all connectons, wire-brush, electrical cleaner, sandpaper,
> electrical cleaner, whiped with rag,
> reconnected all wires, to relay and alt,
>
> re-tested, with volt-meter,
>
> Batt engin off,
> 12.49V
> -Batt-to-Relay,12.49V
> -Batt-to-post on back of Alt,12.49V
>
> Running at idle speed,
>
> Batt 12.25V
> -Batt-to-Relay,12.24V
> -Batt-to post on back of Alt,12.24
>
> johnp
03-06-2005, 11:17 AM
#96
Guest
Posts: n/a
Re: HELP,,electrical nightmare 90YJ 2.5
Ok, the alternator is not turning on.
The small brown wire should have 10-14 volts on it when the engine is
running or when the key is in the 'on' position. This wire should/could
be lower volts than the direct power line so no worries, but it must
have 10 volts at least.
I think you said it had power right?
If so, take a hammer and give the alternator case a whack while it is
running. (stuck brushes syndrome)
If that doesn't bring it up to 14V+, shut it off and see if you can hand
slip the alternator pulley in the belt. If it slips, the alternator
won't turn on likely, so tighten or replace it if already tight.
The other 'real' sneaky one is the small white plug on the back of the
alternator...
The ****** changed the order of the pins right around 1990. So the
brown and red wires could just be in the wrong place. Seriously.
They can be removed from the plug with a small screw driver by pushing
down on the clip on the back of the brass piece from the front side and
pulling from the wire side of the plug. You then might have to bend the
clip back up to hold good again.
Check that out and get back to us please.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> re-cleaned all connectons, wire-brush, electrical cleaner, sandpaper,
> electrical cleaner, whiped with rag,
> reconnected all wires, to relay and alt,
>
> re-tested, with volt-meter,
>
> Batt engin off,
> 12.49V
> -Batt-to-Relay,12.49V
> -Batt-to-post on back of Alt,12.49V
>
> Running at idle speed,
>
> Batt 12.25V
> -Batt-to-Relay,12.24V
> -Batt-to post on back of Alt,12.24
>
> johnp
The small brown wire should have 10-14 volts on it when the engine is
running or when the key is in the 'on' position. This wire should/could
be lower volts than the direct power line so no worries, but it must
have 10 volts at least.
I think you said it had power right?
If so, take a hammer and give the alternator case a whack while it is
running. (stuck brushes syndrome)
If that doesn't bring it up to 14V+, shut it off and see if you can hand
slip the alternator pulley in the belt. If it slips, the alternator
won't turn on likely, so tighten or replace it if already tight.
The other 'real' sneaky one is the small white plug on the back of the
alternator...
The ****** changed the order of the pins right around 1990. So the
brown and red wires could just be in the wrong place. Seriously.
They can be removed from the plug with a small screw driver by pushing
down on the clip on the back of the brass piece from the front side and
pulling from the wire side of the plug. You then might have to bend the
clip back up to hold good again.
Check that out and get back to us please.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> re-cleaned all connectons, wire-brush, electrical cleaner, sandpaper,
> electrical cleaner, whiped with rag,
> reconnected all wires, to relay and alt,
>
> re-tested, with volt-meter,
>
> Batt engin off,
> 12.49V
> -Batt-to-Relay,12.49V
> -Batt-to-post on back of Alt,12.49V
>
> Running at idle speed,
>
> Batt 12.25V
> -Batt-to-Relay,12.24V
> -Batt-to post on back of Alt,12.24
>
> johnp
03-06-2005, 11:17 AM
#97
Guest
Posts: n/a
Re: HELP,,electrical nightmare 90YJ 2.5
Ok, the alternator is not turning on.
The small brown wire should have 10-14 volts on it when the engine is
running or when the key is in the 'on' position. This wire should/could
be lower volts than the direct power line so no worries, but it must
have 10 volts at least.
I think you said it had power right?
If so, take a hammer and give the alternator case a whack while it is
running. (stuck brushes syndrome)
If that doesn't bring it up to 14V+, shut it off and see if you can hand
slip the alternator pulley in the belt. If it slips, the alternator
won't turn on likely, so tighten or replace it if already tight.
The other 'real' sneaky one is the small white plug on the back of the
alternator...
The ****** changed the order of the pins right around 1990. So the
brown and red wires could just be in the wrong place. Seriously.
They can be removed from the plug with a small screw driver by pushing
down on the clip on the back of the brass piece from the front side and
pulling from the wire side of the plug. You then might have to bend the
clip back up to hold good again.
Check that out and get back to us please.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> re-cleaned all connectons, wire-brush, electrical cleaner, sandpaper,
> electrical cleaner, whiped with rag,
> reconnected all wires, to relay and alt,
>
> re-tested, with volt-meter,
>
> Batt engin off,
> 12.49V
> -Batt-to-Relay,12.49V
> -Batt-to-post on back of Alt,12.49V
>
> Running at idle speed,
>
> Batt 12.25V
> -Batt-to-Relay,12.24V
> -Batt-to post on back of Alt,12.24
>
> johnp
The small brown wire should have 10-14 volts on it when the engine is
running or when the key is in the 'on' position. This wire should/could
be lower volts than the direct power line so no worries, but it must
have 10 volts at least.
I think you said it had power right?
If so, take a hammer and give the alternator case a whack while it is
running. (stuck brushes syndrome)
If that doesn't bring it up to 14V+, shut it off and see if you can hand
slip the alternator pulley in the belt. If it slips, the alternator
won't turn on likely, so tighten or replace it if already tight.
The other 'real' sneaky one is the small white plug on the back of the
alternator...
The ****** changed the order of the pins right around 1990. So the
brown and red wires could just be in the wrong place. Seriously.
They can be removed from the plug with a small screw driver by pushing
down on the clip on the back of the brass piece from the front side and
pulling from the wire side of the plug. You then might have to bend the
clip back up to hold good again.
Check that out and get back to us please.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> re-cleaned all connectons, wire-brush, electrical cleaner, sandpaper,
> electrical cleaner, whiped with rag,
> reconnected all wires, to relay and alt,
>
> re-tested, with volt-meter,
>
> Batt engin off,
> 12.49V
> -Batt-to-Relay,12.49V
> -Batt-to-post on back of Alt,12.49V
>
> Running at idle speed,
>
> Batt 12.25V
> -Batt-to-Relay,12.24V
> -Batt-to post on back of Alt,12.24
>
> johnp
03-06-2005, 11:20 AM
#98
Guest
Posts: n/a
Re: HELP,,electrical nightmare 90YJ 2.5
That says the ground is also dirty.
Try from alternator case to battery positive and walk it back until it
comes up the same. Meter pin on the case, the bracket, the block, the
bolt, the black ground wire, the battery.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> engine off,
> 12.54V batt neg to pos
> 12.54V batt neg to relay
> 12.54V batt neg to alt post
> 12.32V alt post to alt case
>
> GRRRRRRRRRRR
>
> johnp
Try from alternator case to battery positive and walk it back until it
comes up the same. Meter pin on the case, the bracket, the block, the
bolt, the black ground wire, the battery.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> engine off,
> 12.54V batt neg to pos
> 12.54V batt neg to relay
> 12.54V batt neg to alt post
> 12.32V alt post to alt case
>
> GRRRRRRRRRRR
>
> johnp
03-06-2005, 11:20 AM
#99
Guest
Posts: n/a
Re: HELP,,electrical nightmare 90YJ 2.5
That says the ground is also dirty.
Try from alternator case to battery positive and walk it back until it
comes up the same. Meter pin on the case, the bracket, the block, the
bolt, the black ground wire, the battery.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> engine off,
> 12.54V batt neg to pos
> 12.54V batt neg to relay
> 12.54V batt neg to alt post
> 12.32V alt post to alt case
>
> GRRRRRRRRRRR
>
> johnp
Try from alternator case to battery positive and walk it back until it
comes up the same. Meter pin on the case, the bracket, the block, the
bolt, the black ground wire, the battery.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> engine off,
> 12.54V batt neg to pos
> 12.54V batt neg to relay
> 12.54V batt neg to alt post
> 12.32V alt post to alt case
>
> GRRRRRRRRRRR
>
> johnp
03-06-2005, 11:20 AM
#100
Guest
Posts: n/a
Re: HELP,,electrical nightmare 90YJ 2.5
That says the ground is also dirty.
Try from alternator case to battery positive and walk it back until it
comes up the same. Meter pin on the case, the bracket, the block, the
bolt, the black ground wire, the battery.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> engine off,
> 12.54V batt neg to pos
> 12.54V batt neg to relay
> 12.54V batt neg to alt post
> 12.32V alt post to alt case
>
> GRRRRRRRRRRR
>
> johnp
Try from alternator case to battery positive and walk it back until it
comes up the same. Meter pin on the case, the bracket, the block, the
bolt, the black ground wire, the battery.
Mike
Dirty Ditch Dawg wrote:
>
> Mike,
> engine off,
> 12.54V batt neg to pos
> 12.54V batt neg to relay
> 12.54V batt neg to alt post
> 12.32V alt post to alt case
>
> GRRRRRRRRRRR
>
> johnp
