On some of your older buses you may need to increase RPMs manually.  Your newer buses will do this automatically. 

COLD AMBIENT PROTECTION (CAP) 

CAP is a standard feature on all vehicles. It safeguards the engine from damage caused by prolonged idle at no load during cold weather. CAP also improves cab warm-up. CAP maintains engine coolant temperature by increasing engine rpm to a programmed value when ambient air temperature is below 0 °C (32 °F), coolant temperature is below 65 °C (149 °F), and engine has been idling at no load for over five minutes.  Engine speed will ramp up to 1400 rpm and will maintain at 1400 rpm until coolant temperature has reached 75 °C (167 °F).

See your Operator's Manual for more info. 

You can find an excerpt from the Operators Manual by clicking these links for the MaxxForce 7 & MaxxForce DT.

Don't miss this month's parts specials.

CLICK HERE to view. 

Technical Bulletin - #A1005

Subject: Stop Sign Wind Guard Holes

Effective January 3, 2011 there will be two slotted holes visible on the white border of stop signs that do not have wind guards. The addition of the slots will allow easier installation of an optional wind guard. Note the picture below that shows the addition of the slots.  

Recall 10519 - ENGINE TURBO OIL SUPPLY LINE on certain CE model school buses built 2/25/10 thru 9/20/10 with a MaxxForce DT engine

Recall 10518 - ENGINE TURBO OIL SUPPLY LINE on certain 4300, 4400, CE commercial bus, and HC commercial bus models built 2/25/10 thru 9/20/10 with a MaxxForce DT engine

AFC 10925 - Inspection and Repair of Mass Airflow (MAF) Sensor Harness on BE and CE Models built 03/03/2010 thru 09/02/2010