Rewiring a renix/HO

[Smokeyyank]

Updated the title. 

Last year I picked up MeanLemons Comanche project. It was a a great platform for what I was looking for. Axles already built, decent suspension, beat to crap so no shame in chopping it up, etc. Well after I picked it up we ended up moving, did a home remodel and had another baby. Comanche had been hanging out at my dad's until I had the space to move it to the new house. Last weekend finally got it moved into the garage to see what I was really getting into. I knew things needed to get finished with the biggest the wiring to get it running.  So Neal had already done some things for the wiring, C101 delete, resoldered AMC's great connectors, couple other things. He had also started doing the renix/HO hybrid and that's is my biggest question mark. I know there is the video going over the change but since I'm mid project kind of at a loss with where to start. Right now I have a slew of wires and some I've been able to connect and others I have no idea. 

 

The basics I know.

99+ intake already on

98+Throttle body on

Exhaust manifold on

98+ power steering is there

Renix fuel rail adapted along with injectors clips soldered on

Updated TPS sensor ( I think that is what it is)

 

So where would be the best place to start? 

 

I can post some other pics later. 

 

 

 

 

[Muncher]

Depends on where you wanna start 

[Smokeyyank]

I guess that my question. Where should I start? Do I reconnect everything and see what's missing. Start with one part, ie ignition, fuel, and work from there. My learning curve on the electrical/wiring is going to be huge. Never done this big of an undertaking for that part. 

[Muncher]

I'd say put everything together and see what it needs sounds vest 

[Smokeyyank]

Here are some pics. I went and connected what I could, but I got more than a few wires leading to no where and others coming off the engine with no home. 

 

This is on the lower part of the harness after the fuel rail. The one connector looks like a fuel injector clip but those are all connected. 

 

Here the upper part of the harness by the fuel rail. I know the TPS needs to be modified but there are a few connectors in the back with no home. 

 

These are connectors coming off the modified relay box above my hand. From looking back through Neal's build thread looks like they are future connectors for accessory's but not really sure. You can see below the dizzy it's unconnected and I can't find a connector for it. I know there is something that needs to be modified with the HO head but not fully sure just yet. 

 

Am I tracking in the right direction? Is there a wiring diagram for dummies somewhere I could peak at? 

[ghetdjc320]

So are you wanting the engine to run on HO electronics? If so, are we talking 91-95 ecu or 96+? Or are you wanting to run renix efi? If it’s renix, I can’t help you there but if you go stand alone efi or obd1 let me know. We have plenty of renix experts here too. 

[Smokeyyank]

11 hours ago, ghetdjc320 said:

So are you wanting the engine to run on HO electronics? If so, are we talking 91-95 ecu or 96+? Or are you wanting to run renix efi? If it’s renix, I can’t help you there but if you go stand alone efi or obd1 let me know. We have plenty of renix experts here too. 

 

It's still all renix. Just an HO head, manifold with the throttle body. Electronics are the one area I'm not great in and mainly just because never had to deal with them a bunch. 

[MiNi Beast]

Umm interesting. I'd see a fuel injector plug as stated so double check you have those setup or spliced proper. Other connection looks to be the map sensor that would need to be updated for new throttle body. Should be a return line for fuel unless not... not sure about the needed mod for head as it should be plug and play. You have cps and iac to connect as well, distributor should be good with renix wiring. I'm lost though, why keep the renix setup? With that do you still have a knock sensor? 

[Smokeyyank]

1 hour ago, MiNi Beast said:

Umm interesting. I'd see a fuel injector plug as stated so double check you have those setup or spliced proper. Other connection looks to be the map sensor that would need to be updated for new throttle body. Should be a return line for fuel unless not... not sure about the needed mod for head as it should be plug and play. You have cps and iac to connect as well, distributor should be good with renix wiring. I'm lost though, why keep the renix setup? With that do you still have a knock sensor? 

 

I did double check those plugs and they are all spliced and connected to the 6 injectors. That lone connector is also a ways away from the others.  I got it with the current set up. I'd like to get it running as is before considering moving to a OBDII.  I believe it will still have the knock sensor as it retains all the renix controls and is just modifying a few things to get the HO head and TB on. 

[MiNi Beast]

So have you tried to fire it up yet? 

[Smokeyyank]

1 hour ago, MiNi Beast said:

So have you tried to fire it up yet? 

 

No where even close to that part. Still need to get a gas tank and rest of the fuel system hooked, oil filter housing, plug wires, battery, cooling system, power steering. It's a big list I'm chipping away at. 

[ghetdjc320]

5 hours ago, Smokeyyank said:

 

I did double check those plugs and they are all spliced and connected to the 6 injectors. That lone connector is also a ways away from the others.  I got it with the current set up. I'd like to get it running as is before considering moving to a OBDII.  I believe it will still have the knock sensor as it retains all the renix controls and is just modifying a few things to get the HO head and TB on. 

It might be worth it to consider a stand alone efi vs an obd2 system. That way you can have all the access to programming that you’ll ever need and don’t have to worry about trying to integrate the harness nearly as much. Just a thought 

[Smokeyyank]

1 hour ago, ghetdjc320 said:

It might be worth it to consider a stand alone efi vs an obd2 system. That way you can have all the access to programming that you’ll ever need and don’t have to worry about trying to integrate the harness nearly as much. Just a thought 

 

More than likely this is going to be a short lived project that I don't want to dump a bunch of cash into. Really just want to get it running then move on to rebuilding my WJ. Although the thought has cross my mind to either find a obdII engine or just a running XJ. Figured I would try to finish what's there before jumping down another rabbit hole. 

[MiNi Beast]

Or just install a 62mm ob1 throttle body....

[cruiser54]

Put a Renix intake manifold, throttle body etc on it and use that system.

 

That "injector" connector goes to the knock sensor down near the oil pan driver's side block. The other plugs go to oxygen sensor and CTS. 

[Smokeyyank]

3 hours ago, cruiser54 said:

Put a Renix intake manifold, throttle body etc on it and use that system.

 

That "injector" connector goes to the knock sensor down near the oil pan driver's side block. The other plugs go to oxygen sensor and CTS. 

 

 

Thanks Cruiser, was waiting for you to share some knowledge. Wil I need to do anything with the head? 

 

Here's what the engine set up is. 

96 4.0L block with 91 7120 head on it, with 99 intake manifold & 91-up exhaust manifold. Renix fuel rail with Volvo 746 injectors. 96+ throttle body that’s been bored out to 63mm.

Renix distributor & alternator. 98 power steering pump & bracket. 

[cruiser54]

Well, once the intake manifold goes away, you'll need to go back to Renix power steering brackets, pump etc. Should be easy to find. 

I think I have a Renix bored TB.