04 305hp runs bad at 50hp setting but runs great at 90hp

[darrylv]

my 04 dodge ram 3500 (08/03) runs great with the D7157 installed and set at 90hp setting on the switch but when I set it to the lower setting the engine runs rough and feels like it is surging. I have checked the 10th digit vin# and it is a 4. What do I need to do to correct this problem.

thanks darrylv

[duallydave]

if you can try a d7158.my 04 did the exact same thing,i tried 3 d7157 and same thing,try a d7158.;et us know

[badvlvo]

I'm having similar issues too. Does your truck idle rough and sound horrible? My build is 10/03, and I think we are in the same boat. I am going to try a 7158 as duallydave and Johan have sugguested. I will keep all of you posted with the progress.

[K2Lithium4.0]

my 04 dodge ram 3500 (08/03) runs great with the D7157 installed and set at 90hp setting on the switch but when I set it to the lower setting the engine runs rough and feels like it is surging. I have checked the 10th digit vin# and it is a 4. What do I need to do to correct this problem.

thanks darrylv

I have the SAME EXACT issue. My build is 09/03 on my '04 and I just installed my D7157 yesterday. 10th digit on mine is a '4' as well.

I've emailed Johan (sorry about that, couldn't register first few times).
I don't see a D7158, just a D7159 for 2004.5-2007s?

What is our best option here?

[duallydave]

im pretty sure the 7158 is a older version of the 7159,when i looked up the 7158 it was for a 05 only.so i guess they got rid of the 7158 and replaced it with the 7159 which does more years.all i know is that it worked on my truck.

[K2Lithium4.0]

I hope that is the issue. I deinstalled the 7157, can't have it on there if the 60hp setting isn't working b/c that's the setting I bought it for. Hopefully, Thoroughbred Diesel has a good customer service program and I can swap with them.

[K2Lithium4.0]

duallydave - did you see any MPG improvements?

I'm working with Thoroughbred to swap for a D7159.

[duallydave]

i havent really drove in many diferent conditions to get a good number on mpg,but im sure its the same maybe a bit better as i dont have to push the pedal down as far to get her moving,right now im on 60hp puck and reg tow tunepredator,i like the low end powe r for in town driving which ive been doing alot of.

[K2Lithium4.0]

Thanks. Johan recommended I try the D7156 - Thoroughbred Diesel is working with me so I'll report back on the 7156.

[darrylv]

Thanks for all the input that has been recieved. Just got of the phone today with thoroughbred diesel, they said they did not think that a 7159 would connect to the plug connectors and I should try the 7156. Guess I will know in a couple of weeks, let me know if the 7159 will work

THANKS FOR THE HELP
darrylv

[K2Lithium4.0]

Thanks. Johan recommended I try the D7156 - Thoroughbred Diesel is working with me so I'll report back on the 7156.

7156 did the trick - runs well. Thanks for the advice Johan and thanks for the good customer service from Thoroughbred!

[darrylv]

I installed the 7156 powerpuck in my 04 dodge and the truck runs great. Thanks to thoroughbred diesel and this and the advice i recieved from this forum.
darrylv

[bracketracer360]

newbie here, kind of confused. i bought a power puck about a week ago for my dads 04 2500 with the 305hp motor. motor was built 1/14/04. i have a D7157 in it. it idles rough and surges in both settings. my question is: should i exchange it for a D7156 or a D7159? (didnt see any D7158) and has anybody dealt with xtremediesel when it comes to situations like this?