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Xterra Rough Idle at start
I have a 2002 Xterra and I've had a couple of cold starts that resulted in a really rough idle. I switched off the vehicle and restarted and it runs fine. I've also noticed a intermittent whirring sound from the engine. Thought it might be the power steering pump b/c I can make it stop whirring by turning the wheels a bit. Could be a loose vacuum line but I can't find it. Any other ideas on what this might be?
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