Truck Idle - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 5 (permalink) Old 01-05-2008, 01:21 AM Thread Starter
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Truck Idle

When I start my truck on a cold morning 30 degrees or cooler, after a minuite the truck goes into a high idle. This is every cold morning. This just started since the cold weather came to my town. My truck goes through regen every now and then. I can tell when it regens.............Anybody else?

2008 F350 Crew Cab 4WD 6.4 Spartan Tuned
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post #2 of 5 (permalink) Old 01-05-2008, 01:42 AM
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my dad's truck does the same thing, I think it's just to help it warm up faster.

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post #3 of 5 (permalink) Old 01-05-2008, 02:53 AM
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My 2000, 7.3 does that when its below 40*. Just helps it warm up and idle smoother.

2001 F-350, DRW, 4x4 Lariet, 7.3, auto, 22.5 Alcoas, AFE breather, w/05-07 front end and mirror conversion , Superchip, Zoodad, Wicked Wheel.

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post #4 of 5 (permalink) Old 01-06-2008, 04:06 AM
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It's in the diesel "supplement" that came with your owners manual. Just the idle kicker for warmup, as already mentioned. I think it said something like after 120 seconds it kicks in... dont quote me, I just remember something listed in seconds, over 60.
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post #5 of 5 (permalink) Old 01-07-2008, 12:19 AM
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It's an ECM program feature called CAP, cold ambient protection. It is use to keep the oil and coolant temps up.
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