help my power and mpg have droped through the floor. I towed my trailer home and after that power mpg droped.two tanks hand cal im getting 10.9 had dealer install new filter.

 

Its cold and winter fuel I bet.Towing how much weight?

 

Whacha driving?

 

Agreed on the winter fuel thing. Fill out your signature so we can see what you have. I would bet if you waited till spring when summer fuel starts getting used again you will find it gets back to normal.

 

Let us know what additives you use....if the answer is none then that is one problem for winter. After fuel filter and air filter are checked and or replaced let us know. ks

 

the trailer is a 4000k travel. i'm using lucus fuel treatment, i just find it strange that after pulling trailer home fuel milage went into the toilet winter fuel or not only get 400 km / whats that like 280 miles / and only 470km empty. when i bought the truck i could punch it a spin the tires in the wet with out thinking about it. now i cant. big loss of power. thanks for the help

 

Not sure if it's the same on your truck, but on my 24 valve, when I had loss of power and mileage it was due to the IAT sensor being gunked up. Replaced it and all was well.
Good luck
Mishkaya

 

The rail overpressure relief valve is leaking. That is where your power went.
Easy to diagnose with the right tools. Put a flow indicator in the return line from the pressure relief valve and then put the truck under load. Watch the rail pressure with a scan tool. You can also watch FCA duty cycle, because if the relief valves leaks the FCA duty cycle will go really high.

The difference between winter and summer fuel is only a few % btu wise. Winter fuel is lower viscosity and pressure/time injection systems such as the Bosch common rail system inject about the same BTUs of fuel regardless of summer/winter. Lower btus made up by lower viscosity.

Mileage will fall a bit though.

Other than than, it could be a blown lift pump or bad CP3. The key is to look at the rail pressure and see what it is doing and go from there.

The ECM will compensate for a low rail pressure, but that only goes so far. Longer injection durations mean higher fuel consumption for the same power level.

 

well i will be printing this out for dealer. there sure are some smart guys here. thanks

 

I was having the same problem. Maybe this will help, maybe not. But read this. It's worth a try.

https://www.dieseltruckresource.com/...ad.php?t=81936

 

well the trucks going back in on tuesday. they had better get her fixed. i just laugh they still are telling me just bad fuel. they think {dodge dealer}that the fuel here is the worst in north america. yea keep telling your self that. just fix the problem.

 

i forgot to mention i dont get any smoke at all. even on hard accel

 

Did you check for the shorted wire.

 

you bet i did but didnt find anything, but i did notice something , when the map light is on and truck is running it dims and gets brighter on its own, is that normal.

 

What are you driving? Please fill out your signature. Go to the "User CP."

Recent models had a plastic intercooler that was prone to cracking/breaking. I think it was the 2005 model. DC is replacing the plastic ones with metal ones as they break (who knows maybe even before they break if you ask.)

A lot of people have had trouble with the intercooler boots coming loose and allowing boost to escape. Check all the clamps from the turbo to the intercooler to the intake manifold.