How to Install a Factory Extended Idle Switch - Page 4 - Jeep Cherokee Forum
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How to Install a Factory Extended Idle Switch

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Old 12-15-2017, 03:03 PM   #46
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Correct. Simply ground A12. That's it.

The fancy stuff is all about using the rare and expensive factory switch, or using a lighted switch with a relay.

But basically, just ground A12.
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- Originally Posted by wizardpc
Automatics only, reading back a little on the thread. And A12 is for obd2 xjs. Earlier ones are a hit and miss nightmare -

FIFY
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Lol. I actually had a 93 police package with extended idle from the factory, so i wouldn't know

God I miss that Jeep. The only vehicle I regret selling.
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Haha... yeah from what I've been reading, there's hope for those with the 93+ OBD1's. I've tried and tried and tried to find something for my '92 with no luck. Just a bunch of suggestions with dead end results.... and I really don't wanna fry my PCM trying things suggested without ACTUAL evidence of it working. If I had a spare PCM, it'd be a different story.
so.... as anyone ever tried to do a RENIX?
didn't they have a Police package? - seems like park ranger/rural Sheriff ... ?
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Old 12-15-2017, 08:01 PM   #47
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so.... as anyone ever tried to do a RENIX?
didn't they have a Police package? - seems like park ranger/rural Sheriff ... ?
I'm pretty sure there was a police package with just about every year of XJ production. Not sure if the extended idle was included in that package or an option, but in theory it should be possible on any year XJ. Just gotta have someone with the know-how on EXACTLY how to go about it. I'm too chicken to try it on my '92 'cause I'm yet to find anyone who's successfully achieved it on that year.... if I had a spare PCM it would be a different story.
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Old 12-16-2017, 09:38 AM   #48
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Old 12-16-2017, 02:00 PM   #49
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Police Package was from 92-01. No Renix.
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Old 12-17-2017, 02:49 AM   #50
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What's that, Bug?

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Police Package was from 92-01. No Renix.
Well, there goes that theory.

Hey.... maybe I'll luck out and find a PCM in a police packaged '92.

Yeah right.... it'll probably be sitting right next to the tire carrier I've been wanting.
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Old 12-17-2017, 06:18 AM   #51
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What's that, Bug?
I was wondering if anyone was going to ask. lol

It's an adjustable idle solenoid for an old GM Carburetor, just supply a switched source. It could make a positive idle upper and hand throttle.
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Old 12-17-2017, 08:09 PM   #52
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I was wondering if anyone was going to ask. lol

It's an adjustable idle solenoid for an old GM Carburetor, just supply a switched source. It could make a positive idle upper and hand throttle.
Hmmmm.......
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Old 12-21-2017, 02:13 AM   #53
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What's that, Bug?



Well, there goes that theory.

Hey.... maybe I'll luck out and find a PCM in a police packaged '92.

Yeah right.... it'll probably be sitting right next to the tire carrier I've been wanting.
LOL ... I was gonna ask Stealership mech ... Oh well.

But that Solenoid looks promising! :-)
Part Number ???
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Old 12-21-2017, 10:49 AM   #54
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LOL ... I was gonna ask Stealership mech ... Oh well.

But that Solenoid looks promising! :-)
Part Number ???
I just grabbed a picture of one because they are all similar, just do a search for "idle solenoid" and you will find different sizes and lengths in both adjustable and non-adjustable positive preset throw lengths. You would have to dig into it more to figure out which you would rather start with because you will have to fab a mounting bracket and a tab for it to push on. But I highly suggest using an adjustable one if you do this.

Important Disclaimer...(kids don't try this at home) And I am not endorsing this idea at all. It is just a curious concept.

I haven't dug deep enough into into circuits yet, but I'm pretty sure there could be a way to also run it through a relay that cuts the juice to it and disables it when you step on the brake, this would make it a bit safer of course.
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Old 12-25-2017, 07:19 AM   #55
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LOL ... I was gonna ask Stealership mech ... Oh well.

But that Solenoid looks promising! :-)
Part Number ???
It looks like a mechanical "latching relay" can be used to control the on/off function to the solenoid. Meaning pressing a momentary switch will apply power to it where it remains a closed circuit until another power source is applied like from the brake light circuit to shut it off. Then it stays off until the first momentary switch is pressed again to turn it back on. Just like a cruise control does.
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Old 01-07-2018, 10:11 PM   #56
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Sounds like a cool idea.... and useful at times... but will have to put that possible project on the shelf for a future rainy day.... too many other projects on the XJ to do first. lol.
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Old 01-08-2018, 08:00 AM   #57
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Sounds like a cool idea.... and useful at times... but will have to put that possible project on the shelf for a future rainy day.... too many other projects on the XJ to do first. lol.
If you have ever crawled along in first low for 5 miles or more at a time, something like this would be a great help. I have a hand cable on my 53 ****** and found it VERY useful and needed for this.
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