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Old 10-11-2009, 09:49 PM   #1
Join Date: Aug 2009
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Is this a Jeep thing?

Random Idle. the idle on my wrangler stays steady at the set RPM, but never idles at the same RPM. itll idle at around 600 , but may switch to 1100, 1000, 800. it never stays the same. its been this way since i bought it, and i love my wrangler, but this just gets annoying. what gives?

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Old 10-11-2009, 10:41 PM   #2
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Help us help you!

Give us some specs: What engine do you have? What Transmission? What color is it?

Oh and welcome to the forum!

1991 XJ Cherokee, 4.0, AW4, NP-242, SYE
HP D30, Rusty's axle truss, Currie HD steering, diff. slider
C8.25, Powertrax locker
4.5" RE up front and Rough Country out back
33" BFG A/T's 15" soft 8's
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trimmed fenders, CB, exhaust, lights, remote locks and start, etc.
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Old 10-12-2009, 01:08 AM   #3
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thanks. i have a 02 wrangler sport. 4.0 I6. besides the funny idle, great engine. 5 speed manual transmission. dark blue.

just seeing if anybody else has the same issue. the idle doesnt fluctuate at all. it'll stay at a steady pace, but the idle isnt consistent. its either dead on at 600 (about half the time), or anywhere up to and including 1100 RPM. not sure what to look at first. TPS maybe?
Pics soon to come.
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Old 10-12-2009, 01:09 AM   #4
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oh forgot to add 63XXX miles. traded my 01 F-150 for it, and havent looked back at ford since. not to say ford sux, but jeeps are friggin Awesome!
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Old 10-12-2009, 05:16 AM   #5
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OMG that color is so bad for that problem! Thats why i didnt buy a dark blue jeep! Just messing, Mine does that only when its cold then it levels out around 800. Is this under normal conditions? Alot of spikes?
2000 Wrangler Sport
2 in Procomp SL 1 in BL
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Old 10-12-2009, 03:27 PM   #6
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Lol. its really at random. at cold itll do it, then idle out to about 600-800 then like half the time after the engine is warm the idle changes. the idle doesnt move at all, but the set idle seems to be off. its more annoying than anything else. i figured maybe someone ran into this. its like the 5.0 mustangs when the IAC goes bad the engine runs like $hIt. not sure if its a jeep thing, if its something related to vacuum, or air intake.

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