My diesel doesnt have power when i give it gas.

Start at the turbo and check for loose or blown air lines . Check the intercooler for cracks. The turbo whine is normal but you would not be hearing it as the turbo is controlled to vary the amount of boost needed for the throttle setting. If you have to use starting fluid to start a diesel then it is time to consider a re-ring and bearings for the engine.

Made these pictures as large as I could. There is a size limit here on fixya. Hope this helps....

fuel injection pump is failin or has issues--getta haynes manual for pro car maintenance

You will need to have the injectors and injector seals checked and if it is a turbo you will also need to have the turbo seals checked.

The intake air temperature sensor on a 6.6L diesel is part of the mass air flow sensor, located just outside the air filter housing, in the intake air snorkle going to the engine. The other one is for the turbo system and is located directly at the top of the engine in the inlet pipe for the turbo. This on is the intake temperature heater / sensor, and will set a totally different code relating to the turbo. The one you want is incorporated with the MAF sensor. Usually code P0101 sets.

mcdevito75 here, The fuel pump should be in the gas tank. Change the fiel filter before condming the fuel pump. You may also have to drain a little water out of the gas tank. Your local repair shop can check this out.

The tag is about the only way to tell. But if it is push button you should have a 246.

check turbo tubes for oil. If wet turbo is leaking. otherwise you may have rings leaking, how is compression?
Also there is a crankcase pressure soleniod in left side of enigine block, it should NOT rattle.

Check this location.
Between the alternator and A/C compressor, on the top. The other thermostat with vent holes goes toward the rear of the engine.
I believe the temp ratings are different for each.
Let engine cool before working on it.
Clean up an spilled radiator fluid. It will destroy pets liver in 24 hours if they drink it.

i have a chevy 6.6 turbo diesel silverado a/c quit i need a diagram