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 Post subject: KJ SFA Speedometer?
PostPosted: Wed Feb 17, 2016 3:37 am 
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Considering an SFA swap on my KJ, I have been hearing there will be problems with the speedometer? Has anyone found a way around it?

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2006 Jeep Liberty CRD
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 Post subject: Re: KJ SFA Speedometer?
PostPosted: Wed Feb 17, 2016 5:20 am 
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That should be the absolute least of your concern..........

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 Post subject: Re: KJ SFA Speedometer?
PostPosted: Thu Feb 18, 2016 12:33 am 
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You might say that, but I've done 4 Rockwell straight axle swaps, and a 1 ton swap. It's kinda what I do. Just not sure of the electronic ins and outs of the KJs

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2006 Jeep Liberty CRD
ARB front bumper, Pro Comp wheels, BFG ATs, 2.5" Pro Comp lift, EHM, ORM, FCV unplugged, Straight exhaust, No armrest mod on 3 doors so far.


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 Post subject: Re: KJ SFA Speedometer?
PostPosted: Thu Feb 18, 2016 11:06 am 
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Johndeere87 wrote:
You might say that, but I've done 4 Rockwell straight axle swaps, and a 1 ton swap. It's kinda what I do. Just not sure of the electronic ins and outs of the KJs

For '06 you must retain the ABS on all 4 corners(4 channel ABS) since the speedo piggy backs of the ABS speed sensors.

If you had a '05 or older KJ the speedo issue is very easy to overcome,I have a post in this section how to do it but will not work for '06/'07 KJ's.


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 Post subject: Re: KJ SFA Speedometer?
PostPosted: Thu Feb 18, 2016 1:40 pm 
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Well that is going to be a problem. I suppose I could just use a GPS unit, But I like to see what kind of wheel speed I am making when I am slipping. I have a "Cyberdyne" brand speedometer on my dune buggy, that can adapt to almost any rotating source, and can be easily calibrated to pick up vehicle speed off of it. I was hoping to use the factory speedometer however. Thanks for the reply

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2006 Jeep Liberty CRD
ARB front bumper, Pro Comp wheels, BFG ATs, 2.5" Pro Comp lift, EHM, ORM, FCV unplugged, Straight exhaust, No armrest mod on 3 doors so far.


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 Post subject: Re: KJ SFA Speedometer?
PostPosted: Thu Feb 18, 2016 1:50 pm 
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I was reading the some of the posts about having issues with the Jeep stalling due to having no speedometer. That sounds a bit scary. I once had that problem while climbing a large hill with my rockwell swapped F150, engine stalled and I barely had enough brakes to keep me from backing over sever people on ATVs that would not give me space :furious:

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2006 Jeep Liberty CRD
ARB front bumper, Pro Comp wheels, BFG ATs, 2.5" Pro Comp lift, EHM, ORM, FCV unplugged, Straight exhaust, No armrest mod on 3 doors so far.


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 Post subject: Re: KJ SFA Speedometer?
PostPosted: Thu Feb 18, 2016 2:44 pm 
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Johndeere87 wrote:
I was reading the some of the posts about having issues with the Jeep stalling due to having no speedometer. That sounds a bit scary. I once had that problem while climbing a large hill with my rockwell swapped F150, engine stalled and I barely had enough brakes to keep me from backing over sever people on ATVs that would not give me space :furious:

Yes sudden braking can cause the engine to stall without a working OE speedo since the trans has no idea what's going on.


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 Post subject: Re: KJ SFA Speedometer?
PostPosted: Thu Feb 18, 2016 3:56 pm 
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Joined: Sat Feb 13, 2016 4:16 pm
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Location: Texas
Is there anything I can do with a tone ring on my pinion and some creative wiring and programming?

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2006 Jeep Liberty CRD
ARB front bumper, Pro Comp wheels, BFG ATs, 2.5" Pro Comp lift, EHM, ORM, FCV unplugged, Straight exhaust, No armrest mod on 3 doors so far.


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