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Erratic Idle

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Old Jul 28, 2006 | 02:14 PM
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Default Erratic Idle

OK, I've posted on this earlier and have tried some things.

I took the BW completely off and relooked at all the connections to make sure there was not unmetered air getting in. No problem found.

I haven't closed the hole in my radiator baffle that I had cut for the BW Icebox.

I'm leading to a throttle body cleaning. Can I do this with Throttle Body cleaner and follow the same directions? Since the AFM will not be seeing airflow when the engine is rev'd, will this cause a problem?
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Old Jul 28, 2006 | 02:18 PM
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While you're at it, clean the MAF sensors CAREFULLY with electronics cleaner.
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Old Jul 28, 2006 | 03:31 PM
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did you try a idle relearn
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Old Jul 28, 2006 | 04:09 PM
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Originally Posted by patton
did you try a idle relearn
No, I didn't. I can do it, but it does not make any sense that this would have to be done when it's run fine up until a month ago. I haven't run it very much as I've been sporatically on the road.

I've seen the steps shown here someplace before, does someone have a link or can they paste it here?
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Old Jul 28, 2006 | 04:14 PM
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this could be as simple as a bad batch of fuel. Run some high octane fuel additive through it. See if it helps.
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Old Jul 28, 2006 | 04:17 PM
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That's one of the thing's I've considered. I didn't run Techron in it the last fill up and this thing seem finicky when it comes to fuel.
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Old Jul 28, 2006 | 04:25 PM
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Worth a shot. The small things are easy to overlook.
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Old Jul 28, 2006 | 07:43 PM
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I had a rough idle a little while back and tuner guru Chuck Mallett suggested a couple of things to look for...one of which was a loose or bad plug wire. I wiggled each one, and sure 'nuff...a loose one. pushed it back on until it clicked, checked the rest of them (all okay), and fired it up. Idled perfect. If I hadn't been deliberately looking for a loose wire, I'd have never been able to tell, and may have driven myself crazy looking for the cause. Check the plug wires.
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Old Jul 28, 2006 | 08:27 PM
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Erratic Idle.....wasn't he a member of Monty Python group?
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Old Jul 31, 2006 | 09:59 AM
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Could the PCV need replacing?

I don't have a whole lot of time to devote to this, that is why I'm trying to get as many ideas as possible and systematically look at them all.
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Old Jul 31, 2006 | 10:22 AM
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Originally Posted by patton
did you try a idle relearn
That is where I would start.
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Old Aug 3, 2006 | 09:35 AM
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OK, since I've filled up with Techron, it hasn't gone completely away, but it has lessened.
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