Loss of power while accelerating.

[Mauro]

Looking for your opinion or if you had the same problem. I was doing about 65 while pulling a trailer (2,500 lbs +/-) and suddenly I felt some jerking when I stepped on it to pass slower traffic. It kept on doing it for a while during my trip. As soon as I got off the highway and got to a red light the truck began to lack power and actually backed fired a couple of times. I think is something with the fuel system but since I just got this truck (2004) I don't know if any of you guys have had the same experience. I'm driving home tomorrow and hopefully this doesn't happen again. I did refill the tank with premium fuel and added a bottle of complete fuel system cleaner. Hopefully that would do the trick. What do you guys think?

[Kronos1965]

Originally Posted by Mauro

Looking for your opinion or if you had the same problem. I was doing about 65 while pulling a trailer (2,500 lbs +/-) and suddenly I felt some jerking when I stepped on it to pass slower traffic. It kept on doing it for a while during my trip. As soon as I got off the highway and got to a red light the truck began to lack power and actually backed fired a couple of times. I think is something with the fuel system but since I just got this truck (2004) I don't know if any of you guys have had the same experience. I'm driving home tomorrow and hopefully this doesn't happen again. I did refill the tank with premium fuel and added a bottle of complete fuel system cleaner. Hopefully that would do the trick. What do you guys think?

Did you regain power after it sputtered?

[Mauro]

Yes I got power back but I'm just worried that tomorrow when I'm going back home it might do it again.

[Kronos1965]

Originally Posted by Mauro

Yes I got power back but I'm just worried that tomorrow when I'm going back home it might do it again.

I'm not sure by what you describe but we do have a Technical Service Bulletin on our IPDM relay starting to short out. When that happens, the truck goes into safe mode.

Have them replace it.

[Forestteck]

My 04 has almost stalled out on me twice while driving and I get the slight jerking while driving around at idle speed. It goes away. Just a weired thing I guess. I keep a spare IPDM relay in the truck.

[Wyatt]

Also...since it is an 04, pull the spark plugs and inspect. Chances are they need replacing. That will make a big difference!

[Mauro]

Ok so I made it home ok but the truck did sputter a couple of times near the end of my trip. The service engine light came on, I had my scanner in the truck and it read P1446 which from I've read here is an evaporation canister malfunction. Could this be making the truck feel like the injectors are dirty and making the truck sputter or is it just pure coinsidence that it came on?

[cr0ck1]

Change the ipdm module. Not just the relay. My 04 was doing the same exact thing. Researched and i came to the conclusion that the ipdm relay shorts out which controls gas flow and other stuff. My truck did the same thing in between 65-70 mph while passing 2500 rpms.

The relay change i did and it lasted a month. Also if you turn the key and the truck don't start and it takes more then one try thats also signs of bad ipdm module.

Ordered my whole ipdm with cover for 330 to my door. It should be here this week.

[Mauro]

I hope I don't have to order the entire module, but I will be replacing the relay this week and changing the evap. valve that sent the P1446 code. Hopefully by doing this and changing the spark plugs the truck will be ok. This is not the time of the year that I want to spend more money than I have to.

[Simon lacaille]

Go to your dealership with the truck loaded. They can hook-up a scaner to monitor fuel ratio, or pressure gauge. Then go for a test drive and nail it. They replace the fuel p/p unit. The technician told me they replaced a few on Armada's.