/r/CTD

Photograph via snooOG

Welcome to /r/CTD, the reddit home of everything for the legendary Cummins Turbo Diesel! Read our subreddit's policies on our wiki before you post and comment. Edit your own flair above so we know what you drive.

Welcome to /r/ctd, the reddit home of everything Cummins! Edit your own flair above so we know what you drive.


Rules & Guidelines:

  • All posts must be Cummins related.

  • Be courteous to each other and keep it civil.

  • Please include some information (Year, model, modifications, likes, dislikes, etc) on it in the comments of your submitted pictures! It adds context, encourages discussion, and helps us to appreciate your submission more.


Want to know what your truck cost per mile, or planning a trip and want to know how much it will cost? Use /u/bammad33's Cost Calculator.


Useful Links:

Mopar Man (the cummins guru)

Buying a Used Diesel

5.9 Vs 6.7

Diesel Exhaust Color Diagnosis


Read the Truth about Cold Air Intakes (or at least one mans project to get real lab data) before you go spend that $500....


Related subs.
/r/Trucks /r/classictrucks
/r/4x4 /r/Justrolledintotheshop
/r/MechanicAdvice /r/TruckCampers
/r/diesel

Mod suggested subs:


/r/CTD

1,849 Subscribers

3

Replaced my turbo actuator, now truck isn't running right.

I have a 2017 Ram 3500 that had the U010C code. I replaced my turbo actuator with one that came 'pre-calibrated". Immediately after replacing it, I noticed my truck sounded like it was idling a bit different, but just barely, so I didn't think much of it. Fast forward 10 days and my truck is doing the following:

Sounds louder when in gear, even if not moving. Seems to idle rough, almost like a loping sound. Truck bogs down/almost dies at low RPMs

Is there a chance the turbo actuator is causing this by not being properly calibrated?

Other possible culprits that I've determined could be responsible are the FCA and the MAP sensor. I'll be checking those next. Any other suggestions would be appreciated.

8 Comments
2024/09/14
22:45 UTC

3

Progress update on P7100 rebuild. Nearly have pump fully apart. Just have to make special tool to remove the tappets and pull the plunger barrels, then order replacement parts and reassemble.

0 Comments
2024/03/25
00:32 UTC

10

DEF delete DOT

Got this 2019 3500. I’m running hotshot. I can’t do a complete delete. What are my best options with the exhaust system?

4 Comments
2024/02/13
13:17 UTC

5

Rebuilding Bosch P7100 myself to swap out the VP44 on my truck

1 Comment
2023/11/23
23:18 UTC

0

Transmission Help.

I have a 2006 dodge 2500 it has the 48re trans. I was just doing some normal driving when the truck was acting weird going down the road, kind of a clunky sound. After that at low speeds it doesn’t want to move but barely will and sounds very grindy. I’m sure I’ll have to drop the trans but does anyone have an idea of what went out? I will try to get a better video tomorrow.

0 Comments
2023/10/10
00:44 UTC

2

12 valve turbo upgrade?

Just got my motor back from the shop, and I need to change up my build plan. (Lots more broken shit than I thought and a baby now on the way)

Motor has

Hamilton towing cam

60lb valve springs

18 degrees of timing

4k gov spring

Number 8 fuel plate

Fass180

Stock injectors

Fresh rebuild on the long block

I’m gonna get an upgraded cooler, 3 piece exhaust manifold, intake box/ intake.

I’m not SUPER concerned with making a ton of power, I just want the truck to drive nicely and reliably. I was going to do the crazy carls twins, but now going with getting my hx35 rebuilt.

Anyone know fuck all about compressor wheel sizing? There’s so many variables it’s hard to figure out what’s what, but I just want the truck to run well without having to wait forever to get the thing to spool.

2 Comments
2023/10/09
18:21 UTC

14

Rolling in style

1 Comment
2023/09/09
21:13 UTC

1

CEL with P02E3 code

I've been chasing a CEL with a code that my mechanic (not a dealer) couldn't definitively diagnose. He told me to take it to a dealer, which I plan on, but they're weeks out and I need to get my truck registered. I've already paid my registration fees and have done a temp tag. I am now on my 2nd and last temp tag, so I've gotta figure this out ASAP.

Truck is a 2017 Ram 3500. About 115k miles on it.

I am fairly handy with a wrench. I've done the full EGR service. I can probably replace whatever the problem part is on my own.

Any thoughts?

2 Comments
2023/05/20
22:30 UTC

3

2021 2500 45k Cummins. Front drivers side Any idea what this ticking noise could be?

1 Comment
2023/01/17
21:15 UTC

2

FOR SALE: Misc Parts and Take-offs from my 2017 Ram 2500 6.7L Mega Cab

I have a handful of things left from when I sold me truck. I'm in the Chicagoland Area, pickup only, unless you want to pay for shipping.

-18" Factory Ram wheels (center caps and lug nuts included - not pictured), 275/70R18 Bridgestone Blizzak LT's, TPMS sensors are installed and included -SOLD

-Emissions equipment and exhaust - $700

-Factory carpet mats - $15 obo

-(not pictured) Front suspension (shocks, springs, sway bar - all have 12,000 miles on them) and rear stock shocks (was air ride truck) - $250 obo

-(not pictured) Husky No-Drill Mud Flaps - $40 obo

-(not pictured) Front winter grille cover, lower section removed due to light bar - $20 obo

https://preview.redd.it/6euziuqfpj3a1.png?width=1200&format=png&auto=webp&s=b2221f50ecf7fb7fd8781d281fe1e5b72e7f57a5

https://preview.redd.it/9v4ynwqfpj3a1.png?width=1200&format=png&auto=webp&s=f2a651f7bbcfb507996ef07dddb124b4d9a0f5c1

https://preview.redd.it/wzjhk5rfpj3a1.png?width=1200&format=png&auto=webp&s=cb7a6111b2b3ce70e38476eeeca50dac26ca3468

https://preview.redd.it/xnhc0grfpj3a1.png?width=1200&format=png&auto=webp&s=3bb7d70609ee3e793d481973cb2cf9b1d804c6c9

https://preview.redd.it/zjrfbirfpj3a1.png?width=1200&format=png&auto=webp&s=fcba115e47ea486691a86544680aea75aab0fd7d

https://preview.redd.it/98cgrorfpj3a1.png?width=1200&format=png&auto=webp&s=3998411259ac2eacc5828157e421ee438aa9af7d

https://preview.redd.it/lv4zswrfpj3a1.png?width=1200&format=png&auto=webp&s=f7847ccbefb8f49d91328fbaaa0abf27c55f07eb

https://preview.redd.it/odahp2sfpj3a1.png?width=1200&format=png&auto=webp&s=0aa635d078f606b882c4cb00c02540d06d51f487

1 Comment
2022/12/02
20:34 UTC

8

I can’t believe the condition of the pilot bushing on my 96 4x4

2 Comments
2022/04/17
02:23 UTC

2

converting Gen 3 to run on oil

Is there any website thats thurough in regards to getting a Gen 3 5.9 to run on oil? Or making yout own bio diesel? With prices through the roof here in CA its either the conversion or red diesel and I'm thinking tank dipping stops are not far from happening.

5 Comments
2022/03/04
19:35 UTC

5

P pump 24V + 40PSI =?

0 Comments
2022/03/01
03:02 UTC

1

Injectors 2016 Ram 3500 6.7l 68RFE 113k miles

Just after 100k miles, the truck started misfiring, most noticeably under load. Mileage wasn't good. Eventually I got a code P020B for injector 2, so I replaced injector 2. The symptoms improved, but I still experienced stumbling. Eventually I got a hard code for injector 6 and there was a pending code for injector 4. I replaced both of those last night and went for a test drive. Stumbling is better, but not gone.

My current plan is to drive it until another code pops. If it's one of the injectors I've replaced already I would suspect a bad replacement part. Any suggestions?

Thank for reading.

5 Comments
2022/02/21
16:06 UTC

2

DIY Boost Leak Tester

0 Comments
2022/01/20
05:14 UTC

1

1994 CTD Dodge Ram 2500

For sale. The body is in rough shape, the engine has been well cared for before sitting for the last 2 years. 350k miles. Has an extra 80 gallon fuel tank in the bed. Long bed. Located in Annapolis, MD area. Make me a reasonable offer.

0 Comments
2021/11/30
14:37 UTC

2

Engine misfire when towing and P0336 code

2006 dodge 3500. The issue seems to be heat related and only occurs when towing. The trailer loaded weighs approximately 11000 lbs. The problem occurs after 30 or so miles of towing. The truck very harshly bumps and power cuts. I can reduce speed for a few miles and then it occurs again until I have gone from 70 mph to 40 mph. I was able to crawl at 40 for several miles. Transmission was rebuilt recently but problem existed before that. The only code is for a crank position sensor and the CEL comes on either just before or right when the power loss begins. A new, oem sensor was installed but did not cure the issue. Could this be a battery issue has indicated by the code reader? I do have new battery cables on order since mine are corroded. Fuel delivery failure? Reluctor wheel? Any advise greatly appreciated.https://i.imgur.com/XIPO8nC.jpg

0 Comments
2021/11/09
15:03 UTC

1

Found this guy at the local Wal-Mart in our small town. Haven't seen it since :(

3 Comments
2021/11/08
21:57 UTC

6

I'm putting a 4BT in a Crown Vic

1 Comment
2021/10/14
20:29 UTC

1

XRT Pro Diesel Downloader

Good evening, y'all.

I know H&S shut down, but I was wondering if anyone had the software for the H&S XRT Pro Diesel Downloader and a EGR/DPF delete tune for my truck? I had accidentally used an Edge CTS3 with tunes (I'm new to the diesel world and actually had no idea my truck had DPF and EGR deletes done to it.)

Thank you!

2 Comments
2021/09/08
22:15 UTC

2

2005 2500 led tail lights

I am trying to install led bulbs in the factory housing and need so assistance with resistors. Which wires need resistors?

3 Comments
2021/07/19
02:13 UTC

1

4th gen coolant bypass bracket

My 4th gen has the bracket in top of the Trans that I have to remove to get to the freeze plug. There are 4 bolts. 14mm seems like it's a little too big, 13mm is too small. 9/16 too small. What fucking size are those bolts???

1 Comment
2021/07/10
09:43 UTC

5

Fuel Filter Housing Question

A friend has a 2003 Ram 3500 5.9l 24V. The filter housing is cracked and leaking fuel and nobody can seem to find one with everyone telling them it’s obsolete. I tried to find online and didn’t really find anything. One website said that part was discontinued. Is this accurate? Does anyone know where I could find this part? It blows my mind that NOBODY makes this part anymore. Thanks in advance! Any insight is appreciated.

5 Comments
2021/06/30
16:17 UTC

23

at the job site

0 Comments
2021/06/18
18:32 UTC

2

Is this blowby?

I'm considering purchasing a 2007 Ram 3500 manual, asking $24k with 160k miles. I haven't gotten to test drive in person yet, but with these trucks selling as fast as they do, I'd have to move quickly. So got this video from the owner checking for blowby.

Does it look like it? Most of the trucks I've been able to find seem to have at least some vapor coming out, but I don't know what is bad, other than the obvious.

Thanks!!!

https://reddit.com/link/o2bfik/video/73mqkvbpyw571/player

4 Comments
2021/06/17
23:51 UTC

Back To Top