Loss of power

[rtooldad]

Hello all.

I am a new member and I am looking for some help!!!!!

I have a 2005 Ram 3500, quad cab, 5. 9 Cummins, 4X4 with 50K miles.

I had a Quadzilla STD 100HP box on it but, have removed it.



Here is the problem... . About 6 weeks ago I was on my way to work and was getting on the FWY, I had my foot in it but was not on the floor. I heard a "pop" come from under the hood, it almost sounded like a backfire through the carb... I know it doesn't have a carb but thats was what it sounded like. I did have the Quadzilla box on it and, it was set on the 70 hp position. Anyway, after the "pop" it felt like it lost power. "It did not through a check engine light" I thought I had some bad fuel so I ran a few tanks threw it but no change. I changed the fuel and air filters but, still no change. I took it into the dealer and they could not find anything wrong, all the turbo hoses and innercooler were ok! They even said there was 24lbs of boost .



The problem is really noticable from 40mph on up under full throttle, it just feels like someone removed two cylinders. It does ok off of the line but, it's still not the same. It even sounds different idling, (quieter) This truck felt like a hot rod, I could beat almost anyone off the line, and it would pull like crazy all the way up to 110 mph.



Let me know if any of you have any ideas.



Thanks in advance,

Steve

 

[sayrew]

Do you have the plastic tanked intercooler? If so you could have popped a seam. If not check your hoses for leaks. It sounds like the intercooler let loose.

I have a 2005 with the plastic tanks and am in the process of replacing it.

Bill

 

[Prairie Dog]

Do you have a pyro? If you popped the intercooler your temps will be way high. If you dont have a gage, dont drive it!

 

[drewRoberts]

I would say the rail pop off valve has let loose. if it was the intercooler or a boot you wouldnt be able to build any pressure, however with the rail pop off valve toast you can still build a little power, but not what you had since some of the pressure is being pushed back to the tank.

 

[Bodie]

Does it still pop every time you push it? It kinda sounds like a bad lift pump, check your fuel presure.

 

[Bob4x4]

I would say the rail pop off valve has let loose. if it was the intercooler or a boot you wouldnt be able to build any pressure, however with the rail pop off valve toast you can still build a little power, but not what you had since some of the pressure is being pushed back to the tank.

Bingo! I have seen this many times... ... the owner will pull the downloader off,bring it in to get checked. The data is all saved,usually will show about 30k for rail pressure at time of event.



Bob