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could be the alt loading up as it is powering the intake heater grid.
Watch your volts when it "chokes down" you'll see they are lower than normal and the gauge will probably be moving slowly one way or the other.
If it's because of the transmission when you first start it in the morning set the e-brake and put it in neutral. I will generate some heat inside the transmission. I was told it's in neutral fluid is still moving inside the transmission and if it's in park the fluid isn't moving at all.
__________________ 03 QCLB 2500 Dually conversion with He351 cheetah, Flux 4.5's and T&C 120% Cp3
Last edited by c_houchins8_182; 11-14-2009 at 10:29 AM.
Is this something that just started all of a sudden? Has anything been done lately to engine or trans? What is idle? If idle is too low, when everything is cold it will choke down to the point of cutting off. Once up to temp, it will stay running. If all else fails, bump the idle just a bit.
These trucks are notorious for leaking air into the fuel lines. Sometimes the lines corrode or sometimes it's back at the tank pickup/sending unit.
If you are sucking air into the lines back at the tank it will start properly and then stumble when the air makes up to the injectors. I have seen that with my 96 and it becomes more pronouced when it is cold as the diesel becomes that much harder to pump. Even at moderate temps it is much easier for the pump to move air than fuel. So if there is any air leak it will normally be worse in cold temps.
As well, as the truck sits if there is even a tiny air leak in the feed line it will eventually allow the fuel in that line to move back to the tank as air displaces the diesel. So, a tiny leak does not cause a noticeable power drop when running but will present itself after sitting for a period of time.
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