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  #1  
Old June 9th, 2005, 17:04
pa_muddin_xj pa_muddin_xj is offline
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Extended Idle???

I work at a state park and drive a 95 xj. I was wondering what the extended idle button is for and how it works?
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Old June 9th, 2005, 20:42
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Matthew Currie Matthew Currie is offline
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Re: Extended Idle???

According to my 95 FSM, the extended idle switch, available only on the police package, is supposed to raise the idle speed to 1000 rpm in park or neutral (but not in gear).
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Old June 10th, 2005, 18:22
pa_muddin_xj pa_muddin_xj is offline
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Re: Extended Idle???

whats the purpose of it? this jeep probably does have a police package cause its an old ranger patrol vehicle.
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Old June 10th, 2005, 18:57
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XJXJ XJXJ is offline
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Re: Extended Idle???

Quote:
Originally Posted by pa_muddin_xj
whats the purpose of it? this jeep probably does have a police package cause its an old ranger patrol vehicle.
Probably just to keep good oil pressure, coolant flow, alternator charge and engine fan air-flow up across the radiator when idling for extended periods of time. Good thing to have for off-roading and performance XJ's too.

EPA probably doesn't like 'em for everybody else but the cops got 'em. That's a cool ECU and somebody would love to have that. It also doesn't have a speed limiter if memory serves correctly?
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Old June 10th, 2005, 19:38
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corbinafly corbinafly is offline
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Re: Extended Idle???

Quote:
Originally Posted by pa_muddin_xj
whats the purpose of it? this jeep probably does have a police package cause its an old ranger patrol vehicle.
To keep the alternator output higher to prevent battery drain when all the lights and other electronics that police vehicles have are in use while at a stop.

K
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Old June 10th, 2005, 19:41
bajacalal bajacalal is offline
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Re: Extended Idle???

How does that work? Is it just wired to the computer or does it work off a sensor to trick the comp? Would an adjustable map have the same effect?
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Old June 10th, 2005, 21:54
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corbinafly corbinafly is offline
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Re: Extended Idle???

Quote:
Originally Posted by bajacalal
How does that work? Is it just wired to the computer or does it work off a sensor to trick the comp? Would an adjustable map have the same effect?
Not sure how it works. I haven't looked into that yet, but the adjustable MAP doesn't effect idle. It will only lean out or richen the air/fuel mix during warm-up, hard acceleration, and WOT (all open loop modes). At cruise and idle (closed loop) the PCM adjusts mix according to O2 sensor signal.

K
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