Search: Posts Made By: Jeff in TD
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Dec 3, 2025, 04:24 PM
Replies: 2
Views: 667
Posted By Jeff in TD

It’s a G56 manual transmission, so not an issue...

It’s a G56 manual transmission, so not an issue with that.

Turns out my vibration/shudder was the dual mass flywheel.

Has a Valair quiet dual disk organic clutch in it now, and it’s smooth as...
Aug 4, 2025, 03:27 PM
Replies: 1
Views: 570
Posted By Jeff in TD

These trucks have the alternator hooked to one...

These trucks have the alternator hooked to one battery, and the power distribution center and ECM are hooked to the other.

If the parallel cables are sketchy (they might look fine and ohm out ok,...
Aug 3, 2025, 01:41 PM
Replies: 2
Views: 667
Posted By Jeff in TD

Injectors, head gasket, or ?

So my 06 5.9 w/G56 is well maintained, with about 120k on it, stock everything.

Recently while towing across country I noted coolant temps a bit higher than normal (maybe 215) when pulling grades,...
Aug 3, 2025, 01:30 PM
Replies: 1
Views: 590
Posted By Jeff in TD

A friend of mine had that issue, and it was due...

A friend of mine had that issue, and it was due to worn fuel injectors. The injectors flow a certain amount of fuel into return flow normally, but as they wear that volume can increase. There are...
Replies: 2
Views: 1,367
Posted By Jeff in TD

Generally it’s pretty simple. It’s been a while...

Generally it’s pretty simple. It’s been a while since I’ve worked on an 03, but I think you can pull back just the top edge of the kick panel trim below the steering wheel from its spring clips...
Jan 19, 2025, 06:36 PM
Replies: 29
Views: 120,286
Posted By Jeff in TD

Nice. There were threads about people being...

Nice. There were threads about people being disappointed with the stock dual mass setup when they first came out, but mine’s been fine.
Oct 31, 2024, 08:54 PM
Replies: 4
Views: 1,476
Posted By Jeff in TD

So here's what I've got. It does have some...

So here's what I've got. It does have some pitting on the turbo side, but I suspect it would seal?

If you want it, soot me an address.
...
Oct 27, 2024, 03:55 PM
Replies: 4
Views: 1,476
Posted By Jeff in TD

The one I have is marked Holset 3593384. I know...

The one I have is marked Holset 3593384. I know it came off a 2003 HO (555) which if I recall correctly had a 3.5” pipe partway back, but maybe had a different turbo than the SO.

4035656 I believe...
Oct 27, 2024, 01:47 PM
Replies: 4
Views: 1,476
Posted By Jeff in TD

I have one laying around that came off an 03 HO....

I have one laying around that came off an 03 HO. Seems to be 3.5x4”?
Feb 7, 2024, 07:17 PM
Replies: 11
Views: 1,006
Posted By Jeff in TD

I’d think Snap-On, Launch, Autel, any of the main...

I’d think Snap-On, Launch, Autel, any of the main scan tools would likely be helpful.
Feb 7, 2024, 07:46 AM
Replies: 11
Views: 1,006
Posted By Jeff in TD

I really think it’s time to bring it to someone...

I really think it’s time to bring it to someone with a good scan tool. You could look to see that all the modules are communicating, any error codes, what the speed sensors are reporting, what state...
Jan 20, 2024, 09:49 PM
Replies: 5
Views: 988
Posted By Jeff in TD

It would be interesting to manipulate the...

It would be interesting to manipulate the accelerator while watching throttle position reading on a scanner.

I’d also read somewhere that excessive fuel injector return flow can cause the engine...
Jan 20, 2024, 09:35 PM
Replies: 2
Views: 819
Posted By Jeff in TD

That is an odd pile of symptoms. The light issue...

That is an odd pile of symptoms. The light issue I’d maybe guess the connectors under the rear of the frame.

The door locks don’t work when the truck isn’t on, but work when it is? I’d be...
Jan 20, 2024, 09:25 PM
Replies: 11
Views: 1,006
Posted By Jeff in TD

That is sure a list of issues. I wonder about...

That is sure a list of issues. I wonder about the main connector for the dash, with the stereo, gauges and what not acting up. The other thing, if you can gain access to a scan tool, it would be...
Jan 20, 2024, 09:14 PM
Replies: 10
Views: 1,470
Posted By Jeff in TD

There is a procedure to measure blow by with a...

There is a procedure to measure blow by with a manometer. Basically using a 3/4 T with a hose barb on one end to fit the vent tube, a plug in the other end with a .302 hole drilled in it, and a small...
Jan 2, 2024, 05:58 PM
Replies: 29
Views: 120,286
Posted By Jeff in TD

I’m kind of interested in this topic as well. I...

I’m kind of interested in this topic as well. I have an 06 with almost 100k on it, stock power and will remain so, mainly used for towing.

Stock clutch doesn’t slip, but the throw out bearing is...
Jan 2, 2024, 05:27 PM
Replies: 11
Views: 2,380
Posted By Jeff in TD

You really can’t separate the parallel connection...

You really can’t separate the parallel connection of the two batteries without doing some rewiring.

The passenger battery is connected to the grid heater relay and the alternator. The driver side...
Jun 4, 2023, 04:24 PM
Replies: 70
Views: 71,939
Posted By Jeff in TD

Yeah there was a lot of hubub about the dual mass...

Yeah there was a lot of hubub about the dual mass flywheel and clutch when the G-56 came out, and I know some people did have failures (particularly if the engine had been run with a misfire).

My...
Nov 12, 2020, 11:43 AM
Replies: 43
Views: 22,240
Posted By Jeff in TD

Good advice. Also, old thread. I wonder how...

Good advice.

Also, old thread. I wonder how many of us are still ticking.
Oct 27, 2020, 09:37 PM
Replies: 0
Views: 1,828
Posted By Jeff in TD

Scan tool that works well for these? mid-price...

Forgive me if this has been discussed. No love from searching.

I'm thinking of getting a modern OSB2 scan tool, and I am wondering what works well with these trucks, and newer ones.

Ideally I'd...
Feb 29, 2020, 01:48 PM
Replies: 303
Views: 239,746
Posted By Jeff in TD

I think they are all the same, except there was a...

I think they are all the same, except there was a change towards the end where the tabs on the case that engage with the coupler part were made stronger. They were intended to limit the motor travel,...
Feb 28, 2020, 08:29 PM
Replies: 303
Views: 239,746
Posted By Jeff in TD

Been a while since I’ve messed with one, but they...

Been a while since I’ve messed with one, but they are popular trucks and it is a common problem.

Googling around it looks like a variety of on line parts places have them. Might also search by...
Feb 28, 2020, 12:38 PM
Replies: 303
Views: 239,746
Posted By Jeff in TD

Personally, if I were going to discharge the AC,...

Personally, if I were going to discharge the AC, drain the coolant and all that, I’d just order new housings. They aren’t that expensive. That way you’d know you have the new style, and no one’s...
Jul 10, 2019, 03:36 PM
Replies: 6
Views: 2,735
Posted By Jeff in TD

Man, I love my mity vac. Gets all the air out,...

Man, I love my mity vac. Gets all the air out, the first time, quickly.

I think rebuild kits are available.

There are also cheaper harbor freight ones, though I don’t know how they are.
Nov 14, 2018, 10:12 PM
Replies: 3
Views: 1,343
Posted By Jeff in TD

I bet you’ve got a bad (or several bad)...

I bet you’ve got a bad (or several bad) injectors. If there is excessive return flow from the injectors, the CP3 wont spin fast enough while cranking to achieve rail pressure required to fire the...
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