Minimal Wiring Project

[rlinares40]

I own a 2006 wrangler that I would Like to get rid of the computer and most of the wiring on the car. The way I was Going to go about this was going to be using one of Clifford’s Performance kits. If any guys running carbs on their strikers could chime in and tell me your experience with your carbed strokers.

*my county doesn’t do emissions so that’s not a worry*

I would also need to change out my 42rle due to it being computer controlled. I was thinking of using a 32RH? The ones from the late 80’s don’t require computers? If someone could check me on this that would be awesome as I don’t know much about jeep transmissions

[superj]

i had an offenhauser (i believe, its been a while) intake and a holly 390 four barrel on my wrangler with the stroker someone else put in it. it had the factory 87 automatic transmission in it and ran like a sports car. i didn't have a huge lift and tires because i don't like to attract undue attention but with a 2" lift and 30s or 31s, it would smoke the tires through the intersection. i had also done the ford distributor mod.

then i tuned it with a vacuum gage.

it was running on stock 87 wiring harness which i took out the extra stuff from so i only had the distributor, and the sensors.

this was years and years ago though so i cannot check anything for you.


look for a holley from a 60s mustang if you cannot find anything inexpensively. that's what mine was from.

[Randy Bobandi]

I own a 2006 wrangler that I would Like to get rid of the computer and most of the wiring on the car. The way I was Going to go about this was going to be using one of Clifford’s Performance kits.

I would also need to change out my 42rle due to it being computer controlled.

I'm actually working on a similar project, except I'm going with a standalone ECU for my 06. Have you thought about the staring system/SKIM module? Also, are you planning on keeping the OEM instrument cluster in working order?

[rlinares40]

I own a 2006 wrangler that I would Like to get rid of the computer and most of the wiring on the car. The way I was Going to go about this was going to be using one of Clifford’s Performance kits.

I would also need to change out my 42rle due to it being computer controlled.

I'm actually working on a similar project, except I'm going with a standalone ECU for my 06. Have you thought about the staring system/SKIM module? Also, are you planning on keeping the OEM instrument cluster in working order?

My 06 didn't come with the SKIM module. The way I was going to do the ignition system was going to be more of a "push button" (really a toggle switch) to where you'd have to insert the key then press on the button before starting (also including a kill switch somewhere in the car). as far as the cluster its easier to go with an aftermarket cluster or an analog one you see in CJs.

another way to bypass the SKIM is to buy a tuner and deactivate it so you don't have to worry about your jeep not starting.

The one problem I couldn't solve before starting this project was how I was going to control the A/C without having the original PCM in the car. Summers in Texas get pretty brutal so this project for me is at a standstill until I figure out the A/C.

[Randy Bobandi]

My 06 didn't come with the SKIM module.

another way to bypass the SKIM is to buy a tuner and deactivate it so you don't have to worry about your jeep not starting.

The one problem I couldn't solve before starting this project was how I was going to control the A/C without having the original PCM in the car. Summers in Texas get pretty brutal so this project for me is at a standstill until I figure out the A/C.

I was unaware that there are 06' models without SKIM from the factory.

HPtuners confirmed that the SKIM cannot be deactivated from the 05-06 PCMs. Maybe there are some other wizards out there that can do it. I've yet to see it be done. I'm using the Haltech 2000 Elite Series ECU so I'm not worried about the starting system. With the SKIM module removed, and the vehicle running off of a standalone, will the factory PCM stay powered up?

I'm most concerned with safety inspections and keeping the Jeep "street legal". I don't live in a smog state that requires an emissions test but some grubby mechanics like to put their scan tools into the OBD2 port to check for codes. So it would be nice to have the factory PCM in place to at least link up with scan tools and rig it to where it shows no stored codes. The Haltech unit does have an OBD2 diagnostic function and port. Maybe it will be sufficient, maybe I'll have to program it a bit to make it read like a factory unit.

It looks like the PCM controls the AC High/Low switches and the AC compressor clutch. Couldn't you rig up those switches straight off of the battery?

ACwiring.JPG

[rlinares40]

My 06 didn't come with the SKIM module.

another way to bypass the SKIM is to buy a tuner and deactivate it so you don't have to worry about your jeep not starting.

The one problem I couldn't solve before starting this project was how I was going to control the A/C without having the original PCM in the car. Summers in Texas get pretty brutal so this project for me is at a standstill until I figure out the A/C.

I was unaware that there are 06' models without SKIM from the factory.

HPtuners confirmed that the SKIM cannot be deactivated from the 05-06 PCMs. Maybe there are some other wizards out there that can do it. I've yet to see it be done. I'm using the Haltech 2000 Elite Series ECU so I'm not worried about the starting system. With the SKIM module removed, and the vehicle running off of a standalone, will the factory PCM stay powered up?

I'm most concerned with safety inspections and keeping the Jeep "street legal". I don't live in a smog state that requires an emissions test but some grubby mechanics like to put their scan tools into the OBD2 port to check for codes. So it would be nice to have the factory PCM in place to at least link up with scan tools and rig it to where it shows no stored codes. The Haltech unit does have an OBD2 diagnostic function and port. Maybe it will be sufficient, maybe I'll have to program it a bit to make it read like a factory unit.

It looks like the PCM controls the AC High/Low switches and the AC compressor clutch. Couldn't you rig up those switches straight off of the battery?

ACwiring.JPG

I apologize for the late response, I've been working on stroking my jeep. ill make sure to check-in more often.

Maybe mine did and someone removed it? I know there I've check and there wasn't a skim module on mine... I do get the SKIM key light though but the odometer was replaced at some point so maybe it came from a vehicle with one?? but yeah mine is an 06 and I just have a standard key with no chip in it.

as long as the PCM has power it should stay on regardless, at least that's what the thought process, there would be an ignition wire that power up the PCM once the key is turned. keeping it "street legal" would be the issue because the PCM wouldn't have any data to report depending on what wiring you're trying to get rid of. Have you thought about the transmission? the 42RLE runs of that PCM, it raises the question of "if the PCM isn't getting signals from the sensors would the transmission run correctly?"

So the high and Low switch wouldn't be the problem (or maybe it would be as it needs different voltages per level picked), the problem would be the clutch compressor (cant run all the time/must cycle) or your AC lines freeze and the temp knob which I'm sure has a PID system or thermistor within the PCM.

What I'm really interested in is that Haltech unit and what you'd be using it for!

[Randy Bobandi]

Maybe mine did and someone removed it? I know there I've check and there wasn't a skim module on mine... I do get the SKIM key light though but the odometer was replaced at some point so maybe it came from a vehicle with one?? but yeah mine is an 06 and I just have a standard key with no chip in it.

Interesting. Maybe a wizard got in there and disabled the SKIM. Is the PCM the original unit to your knowledge?

the 42RLE runs of that PCM, it raises the question of "if the PCM isn't getting signals from the sensors would the transmission run correctly?"

The 42RLE is going in the dumpster. I acquired an AW4 for this LJ. It will run off a standalone TCM.

What I'm really interested in is that Haltech unit and what you'd be using it for!

The Haltech Elite Series does run A/C, something to consider on your end. I might try running the OEM Gauges and OBD2 off a PCM from a manual LJ. That would require the PCM, SKIM Module, Key and Key Cylinder from the same manual LJ. Good thing there are tons of wrecked manual 05-06 models on Car-Part.

[rlinares40]

Interesting. Maybe a wizard got in there and disabled the SKIM. Is the PCM the original unit to your knowledge?

Maybe? mine is a RHD mailman jeep so maybe those did not come with the SKIM Module. Id have to look at the build sheet!

The 42RLE is going in the dumpster. I acquired an AW4 for this LJ. It will run off a standalone TCM.

ahh yes, some people like the AW4 and some people don't. I had picked up a 700r4 for my project, they make adapters that mount to the inline 6.

The Haltech Elite Series does run A/C, something to consider on your end. I might try running the OEM Gauges and OBD2 off a PCM from a manual LJ. That would require the PCM, SKIM Module, Key and Key Cylinder from the same manual LJ. Good thing there are tons of wrecked manual 05-06 models on Car-Part.

If I remember correctly the PCM drives the SKIM so if you don't really care for the system it would probably be the best time to get rid of it since you're switching to the Haltech anyways! I've heard how much of a pain the skim module can be.

[Randy Bobandi]

Maybe? mine is a RHD mailman jeep so maybe those did not come with the SKIM Module. Id have to look at the build sheet!

That would make sense for RHD models to not come equipped with SKIM.

ahh yes, some people like the AW4 and some people don't. I had picked up a 700r4 for my project, they make adapters that mount to the inline 6.

Well, the 700R4/Early 4L60 was the other option. Both the AW4 and 700R4 are pretty simple and excellent units for straight 6 Jeeps. Either one is a massive upgrade over the 42RLE and will transform the vehicle. The GM units will just take a little more time adapting and setting up properly. The TV Cable is especially important on the 700R4. Both units have manual shifting capability and good aftermarket support. I have a few billet parts for this AW4 that Supra guys are using. Compushift sells a TCM for the AW4 that is compatible with paddle shifters if I decide to go that route.

If I remember correctly the PCM drives the SKIM so if you don't really care for the system it would probably be the best time to get rid of it since you're switching to the Haltech anyways! I've heard how much of a pain the skim module can be.

The only reason I am concerned with SKIM at all is keeping the sock instrumentation and OBD2 operable. I need to call my local Bureau of Motor Vehicles to see if it is legal to run an aftermarket ECM. If it isn't, I need to have a stock computer onboard for inspection purposes.

[rlinares40]

Maybe? mine is a RHD mailman jeep so maybe those did not come with the SKIM Module. Id have to look at the build sheet!

That would make sense for RHD models to not come equipped with SKIM.

ahh yes, some people like the AW4 and some people don't. I had picked up a 700r4 for my project, they make adapters that mount to the inline 6.

Well, the 700R4/Early 4L60 was the other option. Both the AW4 and 700R4 are pretty simple and excellent units for straight 6 Jeeps. Either one is a massive upgrade over the 42RLE and will transform the vehicle. The GM units will just take a little more time adapting and setting up properly. The TV Cable is especially important on the 700R4. Both units have manual shifting capability and good aftermarket support. I have a few billet parts for this AW4 that Supra guys are using. Compushift sells a TCM for the AW4 that is compatible with paddle shifters if I decide to go that route.

If I remember correctly the PCM drives the SKIM so if you don't really care for the system it would probably be the best time to get rid of it since you're switching to the Haltech anyways! I've heard how much of a pain the skim module can be.

The only reason I am concerned with SKIM at all is keeping the sock instrumentation and OBD2 operable. I need to call my local Bureau of Motor Vehicles to see if it is legal to run an aftermarket ECM. If it isn't, I need to have a stock computer onboard for inspection purposes.

Paddle shifters on a jeep, that would be a sight!!!

If I remember correctly most aftermarket ECMs are for "Race applications/Off-highway" use. You would still run into trouble if you kept your original PCM; when they go to plug into it they wouldn't be able to pull any info from it as its not running the engine.