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Factory high idle

2K views 4 replies 5 participants last post by  hilton850 
#1 ·
So my 7.3 would go to 1100 rpm high idle pretty quick , 1-2 minutes, after I start it when it's cold out.

So far my 6.7 hasn't done it.

How about you guys on stock trucks?
 
#2 ·
I found out that it has to be COLD!! Like mine sat for 3 days in temps bellow 25 degrees not plugged in and when I started it, it went into high idle warm up for the first time.

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#4 ·
Correctomundo! I have been doing this since August of 2011 starting with my 6.7L regular cab. No need for a sup. cab heater driving this way either.
 
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