I had another post and it is here.

Which shows more of the story. The most recent updates:

We found a piece of rubber in one of the fuel lines and there was nothing wrong with the fass period. They did check it on the bench and send me NEW filters again.

Baillie diesel blew out all the lines and put it all back together.

Got the truck back, drove it home. Ran for a week then it started to stumble and then it got worse and worse until it quit starting. After much searching John determined based on the codes and the way it was acting it was the FCA. So I replaced it with my old one while I was waiting on the new one to come in from floor it and it cleared up like it was fixed for good.

I drove it to oklahoma and now its stuck in the parking lot with what I thought was another bad FCA. Same symptoms. But CNSMOKE diesels, Brian Carter, came over on a saturday to the hotel with StrokerX from Heartland Diesel and compd (again thank you guys so much for your efforts) and tried to help me figure it out but we hooked and unhooked everything on the truck and swapped fcas left and right and nothin.

Weve tried modified fcas, stock ones, filters fuel lines you name it.

Are there any of you geniouses out there that have other ideas. It will idle when you start it up almost forever, but if you go to drive it it acts like it is out of fuel and stumbles alot but its pretty much the same as it has always acted ever since this problem started.

If I dont figure this out soon Im gonna be forced to put the truck on the trailer and drive it to Lawrence, KS to see if John can work on it himself. Talk about frustration.

Its all motor at this point the only aftermarket parts on the truck involed are injectors and cp3. If it was a fuel pump issue it wouldnt run at all right, I mean its gonna pull fuel with the cp3. Doubtful its the inj. as Don just had them.

My wife is livid. She is all about I told you so right now since she wanted me to take that Duramax to work in oklahoma. I hate that truck (bought it as a cheap work truck for our employees, what a great idea). And ive only got to drive my dodge for a week or two since sept.

I cant read fuel preassure since the commander wont read on my truck for some stupid reason talked to tech support but to no avail. I cant get anything to work. I pulled the TST becouse Baillie diesel said it would run rough on zero on all settings. I called TST and they said it should be working.

Help!

 

really sorry to hear about your troubles, I've definitely been there.... out of town

it obviously could be a number of things. You say you found a piece of rubber in the fuel line. Well, you as you probably know... the CP3 has a very low tolerance for foreign materials. Your plungers could be open enough for idle but, when it's demanded can't give any more fuel from possibly being stuck. I hope this isn't the problem cause there no fix, only replacement.

It doesn't help you now but, you could use to get on a Starscan. That way you can see if you have a TPS, FCA or RPS problem. If I'm not mistaken, the TPS is what sends the signals to the FCA so if it's bad... it may make it look as though the FCA is bad.

Just some thoughts... good luck

A FP gauge would sure help.

 

Is the tps at the end of the rail? I just talked to Brian from CNSMOKE who said he and john are thinking that could be a possibility. I didnt know what he was talking about. I thought tps was the throttle position sensor?

 

I know a gauge would help. I think if I end up taking it to john I will have him install a couple analog gauges to kill more of this digital stuff. I figured for those it works for great but im real close to bein a needle dinosaur Im really pretty disappointed with the operation of the commander.

The boost reads 32 psi max and I can hear the turbo start to spool before it ever reads anything. Then the fp just plain freezes 6,7,8,or 12. and it never fluctuates just once in a while throws those numbers up even though the local diesel shop swears it worked great for a few min.

The tranny reads 100 on or off and thats when its 32 outside.

But the rail reads good but were not sure if the commander could be stealing the signal and screwin it up. I need to get it on a REAL drb but dealers wont look at it.

 

have you considered ecm issues?

 

yes, the throttle position sensor. I believe though it's under the dash attached to the fuel peddle some how... not positive. If it is bad... it can send out bad signals causing the FCA and MAP to not act right. Both get there signal from it.

You will hear to turbo spool before really seeing it on the gauge. The gauges aren't dead accurate. I can be going down the interstate at 70mph and barely see any boost. Sometimes you'll have 3 to 5 psi built and it won't show.

The FP doesn't have any reason to move unless you're really in it. It doesn't take a lot of psi at all to run the truck.

 

No but thats a good idea. There isnt any way to check that without getting a new one right?

 

Go to the dealer and pay what ever they charge for a hour of service. Ask them to hook up their Starscan. Look for actual and demanded psi on the fuel pressure. They should be equal. Ask them to make sure the TPS is working correctly. It will also tell them if something is out of it's parameters. This is the only way to look into the ECM.

 

I know what ur satin about the star scan but I can't get any dealers who will do it they say we don't mess with modded fuel systems or with aftermarket "chips" ( would that be the same as stale). Anyhow I guess I'm gonna have to go get tha trailer. I can't just leave tha truck in the hotel parking lot and I have to work thru most tha daylight hours. Thanks for the ideas tho. Maybe if its goin under tha knife again I'll have tha cam and springs done

 

Hey man sorry your still havin problems, I'm thinking ECM hope you get that thing runnin soon and no big deal. John is super busy, I know a good shop and he is next to john and works with him all the time great guy knows these CRs Pm me if your intrested.

 

sounds like a CP3 issue to me???....you dont have the RP gauge working??

 

the rp gauge and egt are the 2 that do work. Idles at 6-7000rpm unless you get on it while its tryin to cut out and then it will die.

Rp will fluctuate all the way up to 15-19000 at 20mph if its under a load. It revs to 3200 real smooth while parked most of the time

 

Where you at tristan? I have a DRB.......if ur not too far.....

 

thanks corey if john can't get to it I'll shootcha a pm

I guess we could speculate all day but without a real ECM scanner it will pretty much be a guess. I don't know honestly what I was hoping for outta this thread but I just wondered if there was any simple checks for the other factory sensors and electronics.

Thanks for the concern anyway guys I'll just bite the bullet and give it to someone else to fix. John seems very willing and I trust what he says so who better?

 

I'm in Oklahoma near Tulsa. I'm usually in Springfield but daddys gotta pay tha bills. Man that sounds pretty far.

I appreciate the offer though but I would I'd feel like a real pud to send people that far away to help my silly truck problems. I felt bad enough havin brian and joe drive an hour today.