Start-up ROAR!!! - Nissan Frontier Forum
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#1 (permalink) Old 11-19-2012, 07:24 PM
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Start-up ROAR!!!

Why does it do that when it's cold?
I know it's supposed to go to about 2000 RPM to warm up the precats, but after the initial roar stops, I can rev it up to the same RPM and it is quiet.

My thoughts: the fan comes on high speed on first start for a few seconds
or it's metal on metal from no lube yet.

Any one know?
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#2 (permalink) Old 11-19-2012, 07:26 PM
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My 2007 4.0 with 67,000 miles on it does the same thing. I've chalked it up as normal, been like that since I bought it with 52,000 miles. It is the clutch fan on mine, never though it was an issue as it disengages/engages as it should.

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#3 (permalink) Old 11-19-2012, 09:05 PM
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its normal. has been discuss several times on here

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#4 (permalink) Old 11-19-2012, 09:30 PM
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My truck thinks its a big rig!

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#5 (permalink) Old 11-20-2012, 06:44 AM
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Mine has done it since day 1. Sounds mean (son loves it.)

2012 SV CC
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#6 (permalink) Old 11-20-2012, 06:44 AM
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It's the fan clutch doing it's job. You will notice it now that the weather has changed to colder fall/winter temps. It will go away when we get the back to warmer spring/summer temps.

Nothing to worry about.
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#7 (permalink) Old 11-20-2012, 11:08 AM
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Thanks fellas. This forum is great
I should have used the search though.

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#8 (permalink) Old 11-20-2012, 12:38 PM
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IMO it is my favorite thing about the truck! Music to my ears when I start it in the cool mornings. I walk across the street to get the neighbor her paper while it warms up and grin while it roars awake.

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#9 (permalink) Old 11-20-2012, 12:41 PM
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I hate it!
Sounds like a dragon on start up.
It's embarrassing to me when people are around.
Plus it makes it hard to sneak out of work early when the general manager's office overlooks my parking spot.

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#10 (permalink) Old 11-20-2012, 03:29 PM
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Its called High idle. Most Computer controlled cars have it.
Would you rather have to pump the gas before you started your truck?

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