High Idle INSTANTLY?
Elder User
Joined: Dec 2006
Posts: 594
Likes: 0
From: New Jersey
I did the BCP mod on my '06 and as long as the parking brake is set and the truck is in park, when I flip the switch the idle goes instantly to 1200. If you flip the switch while the truck is out of park or the parking brake is off and then put the truck into park and or set the parking brake there will be about a 5 second delay before the idle goes up but when it does it goes instantly to 1200. This is normal and the mode that they use in ambulance and rescue trucks.
Posting Guru
Joined: Mar 2006
Posts: 1,798
Likes: 2
From: SoCal, SD CO. East
The cost of being warm
I used the instructions found here
When I press the button, the idle rises to 1200RPM in aprx. 2.5 seconds. It works OK on very cold mornings, but it seems to burn up a lot more fuel than I would expect. In a 5 minute warm-up, the lie-o-meter drops 1 MPG, and it takes about 20 miles of driving before the lie-o-meter returns to the "actual" MPG's. based on that warm-up time and driving distance to recover from the miscalculated mileage, that the 5 minute warm-up burns a little less than 1/3 of a gallon of fuel. I don't think it's cold enough in SoCal for me to use the button very often.
When I press the button, the idle rises to 1200RPM in aprx. 2.5 seconds. It works OK on very cold mornings, but it seems to burn up a lot more fuel than I would expect. In a 5 minute warm-up, the lie-o-meter drops 1 MPG, and it takes about 20 miles of driving before the lie-o-meter returns to the "actual" MPG's. based on that warm-up time and driving distance to recover from the miscalculated mileage, that the 5 minute warm-up burns a little less than 1/3 of a gallon of fuel. I don't think it's cold enough in SoCal for me to use the button very often.
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