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Dead steady idle

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Old Nov 4, 2008 | 11:04 AM
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Default Dead steady idle

Turn the A/C on and it gets almost non-noticeable.A/C off she gets the slightest roughness.Nothing bad or troublesome but I've certainly felt smoother.

Otherwise, she runs/revs perfect.

I keep reading this is semi normal or should I chase down the issue.I hate fixing stuff that isn't broken.Always ends up being a great way to break stuff or cause problems.
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Old Nov 4, 2008 | 11:31 AM
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Its normal....

However....I have seen ARUN@CDNPERF rectify this problem on my car by tuning it out


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Old Nov 4, 2008 | 11:53 AM
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All the C-5's I have been around have a slight ruff Idle anyway.
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Old Nov 4, 2008 | 12:23 PM
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Call me crazy but personallly I like the slightly rough idle. Most V8 cars I've owned had a rougher idle than my C5.
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Old Nov 4, 2008 | 01:11 PM
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I have previously wiped the TB down while on the car and I was almost ready to take it off and give it a good cleaning...I might do it anyways.

I had an occasional miss during idle conditons..very sporadic and only at idle.That turned out to be a plug wire that managed to walk itself halfway off the coil pack.Soon as I puled the FRC's off it was obvious.

I still might pull the TB and just clean it out.I doubt it's been done in some time.
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Old Nov 4, 2008 | 03:46 PM
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Went ahead and removed the TB.Did the bypass while I had it off.

I'll be damned...it runs smoother.The TB wasn't bad but had some thick build-up on the intake side of the housing.Certainly from the stock PCV set-up.
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