Fuel injection wiring problem with 89 cherokee 4.0L
05-06-2004, 11:14 PM
#31
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
Josh Mills did pass the time by typing:
> Thanks Doug, I'm quite handy with a soldering iron, and I know how to
> shrink wrap so I guess I'll give it a shot on Sat. I guess if worse
> comes to worse I'll just have to buy a new injector connector and solder
> it to the blue and white wires on the harness. That would only be needed
> if there is internal damage to the connector though I'm guessing. I'm
> good with electronics in general so I guess I'd be foolish to not try
> myself before consulting a "pro". BTW I really like my Jeep so far, it's
> my first one. I've enjoyed reading some of the posts on this group,
> maybe I'll get some good ideas on how to improve my Jeeping experience.
Not a problem.
If you have a multimeter it might be worth your while to ohm out the harness
back to the ECU. Having a service manual will help. All I have here
is the 93 ZJ book or I'd give you the wires/pins. Generally the injectors
get power from the ASD (Automatic Shut Down) relay and ground through the ECU.
If you measure each injector for resistance it should be about 15 Ohms +-2 Ohms.
--
DougW
> Thanks Doug, I'm quite handy with a soldering iron, and I know how to
> shrink wrap so I guess I'll give it a shot on Sat. I guess if worse
> comes to worse I'll just have to buy a new injector connector and solder
> it to the blue and white wires on the harness. That would only be needed
> if there is internal damage to the connector though I'm guessing. I'm
> good with electronics in general so I guess I'd be foolish to not try
> myself before consulting a "pro". BTW I really like my Jeep so far, it's
> my first one. I've enjoyed reading some of the posts on this group,
> maybe I'll get some good ideas on how to improve my Jeeping experience.
Not a problem.
If you have a multimeter it might be worth your while to ohm out the harness
back to the ECU. Having a service manual will help. All I have here
is the 93 ZJ book or I'd give you the wires/pins. Generally the injectors
get power from the ASD (Automatic Shut Down) relay and ground through the ECU.
If you measure each injector for resistance it should be about 15 Ohms +-2 Ohms.
--
DougW
05-06-2004, 11:14 PM
#32
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
Josh Mills did pass the time by typing:
> Thanks Doug, I'm quite handy with a soldering iron, and I know how to
> shrink wrap so I guess I'll give it a shot on Sat. I guess if worse
> comes to worse I'll just have to buy a new injector connector and solder
> it to the blue and white wires on the harness. That would only be needed
> if there is internal damage to the connector though I'm guessing. I'm
> good with electronics in general so I guess I'd be foolish to not try
> myself before consulting a "pro". BTW I really like my Jeep so far, it's
> my first one. I've enjoyed reading some of the posts on this group,
> maybe I'll get some good ideas on how to improve my Jeeping experience.
Not a problem.
If you have a multimeter it might be worth your while to ohm out the harness
back to the ECU. Having a service manual will help. All I have here
is the 93 ZJ book or I'd give you the wires/pins. Generally the injectors
get power from the ASD (Automatic Shut Down) relay and ground through the ECU.
If you measure each injector for resistance it should be about 15 Ohms +-2 Ohms.
--
DougW
> Thanks Doug, I'm quite handy with a soldering iron, and I know how to
> shrink wrap so I guess I'll give it a shot on Sat. I guess if worse
> comes to worse I'll just have to buy a new injector connector and solder
> it to the blue and white wires on the harness. That would only be needed
> if there is internal damage to the connector though I'm guessing. I'm
> good with electronics in general so I guess I'd be foolish to not try
> myself before consulting a "pro". BTW I really like my Jeep so far, it's
> my first one. I've enjoyed reading some of the posts on this group,
> maybe I'll get some good ideas on how to improve my Jeeping experience.
Not a problem.
If you have a multimeter it might be worth your while to ohm out the harness
back to the ECU. Having a service manual will help. All I have here
is the 93 ZJ book or I'd give you the wires/pins. Generally the injectors
get power from the ASD (Automatic Shut Down) relay and ground through the ECU.
If you measure each injector for resistance it should be about 15 Ohms +-2 Ohms.
--
DougW
05-06-2004, 11:14 PM
#33
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
Josh Mills did pass the time by typing:
> Thanks Doug, I'm quite handy with a soldering iron, and I know how to
> shrink wrap so I guess I'll give it a shot on Sat. I guess if worse
> comes to worse I'll just have to buy a new injector connector and solder
> it to the blue and white wires on the harness. That would only be needed
> if there is internal damage to the connector though I'm guessing. I'm
> good with electronics in general so I guess I'd be foolish to not try
> myself before consulting a "pro". BTW I really like my Jeep so far, it's
> my first one. I've enjoyed reading some of the posts on this group,
> maybe I'll get some good ideas on how to improve my Jeeping experience.
Not a problem.
If you have a multimeter it might be worth your while to ohm out the harness
back to the ECU. Having a service manual will help. All I have here
is the 93 ZJ book or I'd give you the wires/pins. Generally the injectors
get power from the ASD (Automatic Shut Down) relay and ground through the ECU.
If you measure each injector for resistance it should be about 15 Ohms +-2 Ohms.
--
DougW
> Thanks Doug, I'm quite handy with a soldering iron, and I know how to
> shrink wrap so I guess I'll give it a shot on Sat. I guess if worse
> comes to worse I'll just have to buy a new injector connector and solder
> it to the blue and white wires on the harness. That would only be needed
> if there is internal damage to the connector though I'm guessing. I'm
> good with electronics in general so I guess I'd be foolish to not try
> myself before consulting a "pro". BTW I really like my Jeep so far, it's
> my first one. I've enjoyed reading some of the posts on this group,
> maybe I'll get some good ideas on how to improve my Jeeping experience.
Not a problem.
If you have a multimeter it might be worth your while to ohm out the harness
back to the ECU. Having a service manual will help. All I have here
is the 93 ZJ book or I'd give you the wires/pins. Generally the injectors
get power from the ASD (Automatic Shut Down) relay and ground through the ECU.
If you measure each injector for resistance it should be about 15 Ohms +-2 Ohms.
--
DougW
05-09-2004, 07:59 PM
#34
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
Roughly 5/6/04 15:06, DougW's monkeys randomly typed:
> A good discussion is hardly a flame.
>
> Here is the deal. Solder itself (lead/tin) is generally a lousy conductor
> (except for silver based solder). Its primary job is to keep a mechanical
> connection sound and free of corrosion.
The tiny amount of silver in silver bearing solder has
little or no effect on conductivity. It is there not to add
conductivity but to keep the lead tin from leaching silver out
of silver plated components.
The good part is the mechanical connection... as you imply
solder should never be used as the provider itself of
mechanical connection. Plus the mechanical connection should
be such that it forms the conductive path...which will be the
case for most since lead/tin is less than 10% of the relative
conductivity of copper. [Lead about 5%, tin about 13,
eutectic or close less than 10].
For auto connections subject to vibration is best to use tape
or shrink wrap that extends well beyond the solder wetted areas.
--
Me human. You Computer. Me have BFH. You have fragile parts. You behave.
> A good discussion is hardly a flame.
>
> Here is the deal. Solder itself (lead/tin) is generally a lousy conductor
> (except for silver based solder). Its primary job is to keep a mechanical
> connection sound and free of corrosion.
The tiny amount of silver in silver bearing solder has
little or no effect on conductivity. It is there not to add
conductivity but to keep the lead tin from leaching silver out
of silver plated components.
The good part is the mechanical connection... as you imply
solder should never be used as the provider itself of
mechanical connection. Plus the mechanical connection should
be such that it forms the conductive path...which will be the
case for most since lead/tin is less than 10% of the relative
conductivity of copper. [Lead about 5%, tin about 13,
eutectic or close less than 10].
For auto connections subject to vibration is best to use tape
or shrink wrap that extends well beyond the solder wetted areas.
--
Me human. You Computer. Me have BFH. You have fragile parts. You behave.
05-09-2004, 07:59 PM
#35
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
Roughly 5/6/04 15:06, DougW's monkeys randomly typed:
> A good discussion is hardly a flame.
>
> Here is the deal. Solder itself (lead/tin) is generally a lousy conductor
> (except for silver based solder). Its primary job is to keep a mechanical
> connection sound and free of corrosion.
The tiny amount of silver in silver bearing solder has
little or no effect on conductivity. It is there not to add
conductivity but to keep the lead tin from leaching silver out
of silver plated components.
The good part is the mechanical connection... as you imply
solder should never be used as the provider itself of
mechanical connection. Plus the mechanical connection should
be such that it forms the conductive path...which will be the
case for most since lead/tin is less than 10% of the relative
conductivity of copper. [Lead about 5%, tin about 13,
eutectic or close less than 10].
For auto connections subject to vibration is best to use tape
or shrink wrap that extends well beyond the solder wetted areas.
--
Me human. You Computer. Me have BFH. You have fragile parts. You behave.
> A good discussion is hardly a flame.
>
> Here is the deal. Solder itself (lead/tin) is generally a lousy conductor
> (except for silver based solder). Its primary job is to keep a mechanical
> connection sound and free of corrosion.
The tiny amount of silver in silver bearing solder has
little or no effect on conductivity. It is there not to add
conductivity but to keep the lead tin from leaching silver out
of silver plated components.
The good part is the mechanical connection... as you imply
solder should never be used as the provider itself of
mechanical connection. Plus the mechanical connection should
be such that it forms the conductive path...which will be the
case for most since lead/tin is less than 10% of the relative
conductivity of copper. [Lead about 5%, tin about 13,
eutectic or close less than 10].
For auto connections subject to vibration is best to use tape
or shrink wrap that extends well beyond the solder wetted areas.
--
Me human. You Computer. Me have BFH. You have fragile parts. You behave.
05-09-2004, 07:59 PM
#36
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
Roughly 5/6/04 15:06, DougW's monkeys randomly typed:
> A good discussion is hardly a flame.
>
> Here is the deal. Solder itself (lead/tin) is generally a lousy conductor
> (except for silver based solder). Its primary job is to keep a mechanical
> connection sound and free of corrosion.
The tiny amount of silver in silver bearing solder has
little or no effect on conductivity. It is there not to add
conductivity but to keep the lead tin from leaching silver out
of silver plated components.
The good part is the mechanical connection... as you imply
solder should never be used as the provider itself of
mechanical connection. Plus the mechanical connection should
be such that it forms the conductive path...which will be the
case for most since lead/tin is less than 10% of the relative
conductivity of copper. [Lead about 5%, tin about 13,
eutectic or close less than 10].
For auto connections subject to vibration is best to use tape
or shrink wrap that extends well beyond the solder wetted areas.
--
Me human. You Computer. Me have BFH. You have fragile parts. You behave.
> A good discussion is hardly a flame.
>
> Here is the deal. Solder itself (lead/tin) is generally a lousy conductor
> (except for silver based solder). Its primary job is to keep a mechanical
> connection sound and free of corrosion.
The tiny amount of silver in silver bearing solder has
little or no effect on conductivity. It is there not to add
conductivity but to keep the lead tin from leaching silver out
of silver plated components.
The good part is the mechanical connection... as you imply
solder should never be used as the provider itself of
mechanical connection. Plus the mechanical connection should
be such that it forms the conductive path...which will be the
case for most since lead/tin is less than 10% of the relative
conductivity of copper. [Lead about 5%, tin about 13,
eutectic or close less than 10].
For auto connections subject to vibration is best to use tape
or shrink wrap that extends well beyond the solder wetted areas.
--
Me human. You Computer. Me have BFH. You have fragile parts. You behave.
05-09-2004, 07:59 PM
#37
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
Roughly 5/6/04 15:06, DougW's monkeys randomly typed:
> A good discussion is hardly a flame.
>
> Here is the deal. Solder itself (lead/tin) is generally a lousy conductor
> (except for silver based solder). Its primary job is to keep a mechanical
> connection sound and free of corrosion.
The tiny amount of silver in silver bearing solder has
little or no effect on conductivity. It is there not to add
conductivity but to keep the lead tin from leaching silver out
of silver plated components.
The good part is the mechanical connection... as you imply
solder should never be used as the provider itself of
mechanical connection. Plus the mechanical connection should
be such that it forms the conductive path...which will be the
case for most since lead/tin is less than 10% of the relative
conductivity of copper. [Lead about 5%, tin about 13,
eutectic or close less than 10].
For auto connections subject to vibration is best to use tape
or shrink wrap that extends well beyond the solder wetted areas.
--
Me human. You Computer. Me have BFH. You have fragile parts. You behave.
> A good discussion is hardly a flame.
>
> Here is the deal. Solder itself (lead/tin) is generally a lousy conductor
> (except for silver based solder). Its primary job is to keep a mechanical
> connection sound and free of corrosion.
The tiny amount of silver in silver bearing solder has
little or no effect on conductivity. It is there not to add
conductivity but to keep the lead tin from leaching silver out
of silver plated components.
The good part is the mechanical connection... as you imply
solder should never be used as the provider itself of
mechanical connection. Plus the mechanical connection should
be such that it forms the conductive path...which will be the
case for most since lead/tin is less than 10% of the relative
conductivity of copper. [Lead about 5%, tin about 13,
eutectic or close less than 10].
For auto connections subject to vibration is best to use tape
or shrink wrap that extends well beyond the solder wetted areas.
--
Me human. You Computer. Me have BFH. You have fragile parts. You behave.
05-09-2004, 08:11 PM
#38
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
But, you won't be pissed if I continue to use solder to make
connections, say to tail lights inside fender wells where corrosion is a
factor.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
"L0nD0t.$t0we11" wrote:
>
> The tiny amount of silver in silver bearing solder has
> little or no effect on conductivity. It is there not to add
> conductivity but to keep the lead tin from leaching silver out
> of silver plated components.
>
> The good part is the mechanical connection... as you imply
> solder should never be used as the provider itself of
> mechanical connection. Plus the mechanical connection should
> be such that it forms the conductive path...which will be the
> case for most since lead/tin is less than 10% of the relative
> conductivity of copper. [Lead about 5%, tin about 13,
> eutectic or close less than 10].
>
> For auto connections subject to vibration is best to use tape
> or shrink wrap that extends well beyond the solder wetted areas.
>
> --
> Me human. You Computer. Me have BFH. You have fragile parts. You behave.
connections, say to tail lights inside fender wells where corrosion is a
factor.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
"L0nD0t.$t0we11" wrote:
>
> The tiny amount of silver in silver bearing solder has
> little or no effect on conductivity. It is there not to add
> conductivity but to keep the lead tin from leaching silver out
> of silver plated components.
>
> The good part is the mechanical connection... as you imply
> solder should never be used as the provider itself of
> mechanical connection. Plus the mechanical connection should
> be such that it forms the conductive path...which will be the
> case for most since lead/tin is less than 10% of the relative
> conductivity of copper. [Lead about 5%, tin about 13,
> eutectic or close less than 10].
>
> For auto connections subject to vibration is best to use tape
> or shrink wrap that extends well beyond the solder wetted areas.
>
> --
> Me human. You Computer. Me have BFH. You have fragile parts. You behave.
05-09-2004, 08:11 PM
#39
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
But, you won't be pissed if I continue to use solder to make
connections, say to tail lights inside fender wells where corrosion is a
factor.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
"L0nD0t.$t0we11" wrote:
>
> The tiny amount of silver in silver bearing solder has
> little or no effect on conductivity. It is there not to add
> conductivity but to keep the lead tin from leaching silver out
> of silver plated components.
>
> The good part is the mechanical connection... as you imply
> solder should never be used as the provider itself of
> mechanical connection. Plus the mechanical connection should
> be such that it forms the conductive path...which will be the
> case for most since lead/tin is less than 10% of the relative
> conductivity of copper. [Lead about 5%, tin about 13,
> eutectic or close less than 10].
>
> For auto connections subject to vibration is best to use tape
> or shrink wrap that extends well beyond the solder wetted areas.
>
> --
> Me human. You Computer. Me have BFH. You have fragile parts. You behave.
connections, say to tail lights inside fender wells where corrosion is a
factor.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
"L0nD0t.$t0we11" wrote:
>
> The tiny amount of silver in silver bearing solder has
> little or no effect on conductivity. It is there not to add
> conductivity but to keep the lead tin from leaching silver out
> of silver plated components.
>
> The good part is the mechanical connection... as you imply
> solder should never be used as the provider itself of
> mechanical connection. Plus the mechanical connection should
> be such that it forms the conductive path...which will be the
> case for most since lead/tin is less than 10% of the relative
> conductivity of copper. [Lead about 5%, tin about 13,
> eutectic or close less than 10].
>
> For auto connections subject to vibration is best to use tape
> or shrink wrap that extends well beyond the solder wetted areas.
>
> --
> Me human. You Computer. Me have BFH. You have fragile parts. You behave.
05-09-2004, 08:11 PM
#40
Guest
Posts: n/a
Re: Fuel injection wiring problem with 89 cherokee 4.0L
But, you won't be pissed if I continue to use solder to make
connections, say to tail lights inside fender wells where corrosion is a
factor.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
"L0nD0t.$t0we11" wrote:
>
> The tiny amount of silver in silver bearing solder has
> little or no effect on conductivity. It is there not to add
> conductivity but to keep the lead tin from leaching silver out
> of silver plated components.
>
> The good part is the mechanical connection... as you imply
> solder should never be used as the provider itself of
> mechanical connection. Plus the mechanical connection should
> be such that it forms the conductive path...which will be the
> case for most since lead/tin is less than 10% of the relative
> conductivity of copper. [Lead about 5%, tin about 13,
> eutectic or close less than 10].
>
> For auto connections subject to vibration is best to use tape
> or shrink wrap that extends well beyond the solder wetted areas.
>
> --
> Me human. You Computer. Me have BFH. You have fragile parts. You behave.
connections, say to tail lights inside fender wells where corrosion is a
factor.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
"L0nD0t.$t0we11" wrote:
>
> The tiny amount of silver in silver bearing solder has
> little or no effect on conductivity. It is there not to add
> conductivity but to keep the lead tin from leaching silver out
> of silver plated components.
>
> The good part is the mechanical connection... as you imply
> solder should never be used as the provider itself of
> mechanical connection. Plus the mechanical connection should
> be such that it forms the conductive path...which will be the
> case for most since lead/tin is less than 10% of the relative
> conductivity of copper. [Lead about 5%, tin about 13,
> eutectic or close less than 10].
>
> For auto connections subject to vibration is best to use tape
> or shrink wrap that extends well beyond the solder wetted areas.
>
> --
> Me human. You Computer. Me have BFH. You have fragile parts. You behave.