jsteed
CJ-8 Member
- City
- Seattle
- State
- WA
Hi everyone,
Been a while since I've posted. The Frankenscrambler has been sitting in the garage for a while and with temperatures rising in the PNW, I've decided to get some work done with the few spare hours I have available at night. Some of you may remember my 8, but as a little bit of history I picked it up in pretty sad but drivable shape. I've enjoyed having it up at our cabin in E. Washington. Great for FS roads and just cruising in the sun. Love it. But it has its gremlins, which includes running rough, hard cold starts, running rich, etc. So I decided to bring it back this winter and get some work done on it. I started by replacing the air filter on the Weber carb and realized that the electric choke doesn't work. So I followed some wires and found that the wire to the electric choke goes into a sea of mostly unidentifiable, poorly spliced (duct tape, lamp cords, etc.) mess of wires that go nowhere since it has a Weber carb. There was no power at the electric choke wire...
So down the rabbit hole I go...
I realized that despite having been converted to the Weber, no one ever did a Nutter bypass. I started at the diagnostic ports on the passenger fender well, and started cutting wires. Like crazy. Many went to the ECU, some over to the drivers side, and I've managed to get rid of maybe half of them. I've completed the Nutter bypass. I now have a series of questions that may seem overwhelming, but I'll try to lay them out in a manageable way.
1) Can ALL of the wiring going to the ECU be eliminated and the ECU removed? I'd like to make a clean cut here. Here is what I have so far...
2) on the driver's side there are two groups of wiring coming out of the firewall. the one I'm pointing at goes to the lighting, it stays. The one on the left seems to go to either the ECU or ignition. Is there a good way to know what can go and what can stay?
3) I found two relays in the mess of wires. one was removed, I have no idea what it went to and when I traced the wires, many went nowhere. the other I'd like to remove, but I have no idea what it goes to, or went to? Of note, the manifold heater is gone. I kept the wire going to it in case I would like to add it back later.
4) What in the name god happened here?? when I pulled off the electric tape coming out here, I was stunned (although with this jeep, its never THAT big of a suprise!) These seem to be heavy gauge wires, spliced together with two thing gauge wires coming off going to the starter solenoid. Me thinks this is a fire waiting to happen!
5) I haven't checked the timing, which after the Nutter bypass I understand should be 8* BTDC, but could some of the poor performance be due to vacuum leaks from the following manifold vacuum ports not being plugged??
and
6) Does anyone know of a good wiring diagram for the engine compartment that shows basic, minimal wiring, for after a nutter bypass that includes wiring that should go to alternator, coil, solenoid, ICM, etc.? The vehicle obviously doesn't have an emissions system...
7) Assuming the oil pressure switch works, where should it draw power from in order to turn the electric choke on (or off I guess)? The switch is currently sitting there with no power going in or out of it.
Thanks everyone. This has cost be a lot of Rainier Beer. I don't know anyone in the Seattle area to help me out, so I'm kind of on my own here... I've spent a lot of time scouring this site and the broader internet. I've taken valuable tidbits from here and there, but these are my remaining questions. Thanks again!
Jordan
Been a while since I've posted. The Frankenscrambler has been sitting in the garage for a while and with temperatures rising in the PNW, I've decided to get some work done with the few spare hours I have available at night. Some of you may remember my 8, but as a little bit of history I picked it up in pretty sad but drivable shape. I've enjoyed having it up at our cabin in E. Washington. Great for FS roads and just cruising in the sun. Love it. But it has its gremlins, which includes running rough, hard cold starts, running rich, etc. So I decided to bring it back this winter and get some work done on it. I started by replacing the air filter on the Weber carb and realized that the electric choke doesn't work. So I followed some wires and found that the wire to the electric choke goes into a sea of mostly unidentifiable, poorly spliced (duct tape, lamp cords, etc.) mess of wires that go nowhere since it has a Weber carb. There was no power at the electric choke wire...
So down the rabbit hole I go...
I realized that despite having been converted to the Weber, no one ever did a Nutter bypass. I started at the diagnostic ports on the passenger fender well, and started cutting wires. Like crazy. Many went to the ECU, some over to the drivers side, and I've managed to get rid of maybe half of them. I've completed the Nutter bypass. I now have a series of questions that may seem overwhelming, but I'll try to lay them out in a manageable way.
1) Can ALL of the wiring going to the ECU be eliminated and the ECU removed? I'd like to make a clean cut here. Here is what I have so far...
2) on the driver's side there are two groups of wiring coming out of the firewall. the one I'm pointing at goes to the lighting, it stays. The one on the left seems to go to either the ECU or ignition. Is there a good way to know what can go and what can stay?
3) I found two relays in the mess of wires. one was removed, I have no idea what it went to and when I traced the wires, many went nowhere. the other I'd like to remove, but I have no idea what it goes to, or went to? Of note, the manifold heater is gone. I kept the wire going to it in case I would like to add it back later.
4) What in the name god happened here?? when I pulled off the electric tape coming out here, I was stunned (although with this jeep, its never THAT big of a suprise!) These seem to be heavy gauge wires, spliced together with two thing gauge wires coming off going to the starter solenoid. Me thinks this is a fire waiting to happen!
5) I haven't checked the timing, which after the Nutter bypass I understand should be 8* BTDC, but could some of the poor performance be due to vacuum leaks from the following manifold vacuum ports not being plugged??
and
6) Does anyone know of a good wiring diagram for the engine compartment that shows basic, minimal wiring, for after a nutter bypass that includes wiring that should go to alternator, coil, solenoid, ICM, etc.? The vehicle obviously doesn't have an emissions system...
7) Assuming the oil pressure switch works, where should it draw power from in order to turn the electric choke on (or off I guess)? The switch is currently sitting there with no power going in or out of it.
Thanks everyone. This has cost be a lot of Rainier Beer. I don't know anyone in the Seattle area to help me out, so I'm kind of on my own here... I've spent a lot of time scouring this site and the broader internet. I've taken valuable tidbits from here and there, but these are my remaining questions. Thanks again!
Jordan