I'm gonna ask again...which box?

[qzilla]

I got your pm as well but, I figured any info or insight I can give is much better to be seen by more people in the event they ever have a similar problem.



I am not going to lecture but, next time you have any troubles ever, no matter what they are please do what you can to pull the exact codes. We can take these codes and symptoms and really put a better finger on any issue you might have. Without the actualy codes we can only make guesses even if they are educated guesses. In this instance they are not as important to know whether or not the fuel pressure sensor was the issue but, it might be important to know them so we can figure out if the problem was or could have been fixed with a reflash.



Now I am assuming that the only modification is the Commander at this point.



The only way that I can think that there is even an outside chance that the fuel pressure sending unit could cause the truck to die would be if it was leaking and allowed air in the system. I do not think this happened and I doubt that it would have taken more than a few minutes for the problem to show up.



The fuel pressure sending unit itself is simply measuring the pressure at the inlet of the CP3 pump. We use a tapped banjo bolt so flow is not affected even 1%.



Now there is a possibility that the Commander had an issue although it would something I have never heard of and it is sort of far fetched but, I think it could be possible. With that said, I would think you would know if you had a problem with the Commander that would have caused this. In order to do this there would have to have been some sort of serious voltage problem or short somewhere in the Commander that might have done something stupid to the temp or boost pressure sensor. I think you would continue to have problems with the Commander after this happened and I think you would have noticed this on the Commander itself.



Now I personally do not feel this would or could happen even though I think it is possible. I jsut hate to say never.



There are only a couple of ways to get the truck to shut off like you mentioned. The first would be a fuel problem where the pump turned off or was not running. This is also a little far fetched as I know that these trucks will run with no lift pump and the CP3 can actually draw the fuel if it has to although the performance would be poor. If you hit some sort of limp mode for some reason it could also do something similar.



If yo uhave the codes please post them up as we can really look at specific areas to see if it is possible the Commander did something.



Also, even if it was a Commander problem I cannot possibly see how it would be with the fuel pressure kit in any way shape or form unless it had a leak which is almost impossible with npt fittings.



The XZT can be used with the Commander, with the Fuel pressure kit or all by itself. The XZT is 100% stand alone and does not require any other parts to function. Now if you do add it to the Commander you can set de-fueling parameters to automatically adjust the module to keep you from hitting these warnings. The most common use of this would be de-fueling by EGT. If you hook the fuel pressure kit up you can then de-fuel based on Rail Pressure and/or Lift Pump pressure.



Last thing. I made some posts about some problems we have had with the fuel pressure sending units on various sites and frankly I can hardly keep up with all of them! In short, we know the issue and are replacing sensors. This problem is not associated with dying trucks but, less than stellar accuracy on the lower end of the pressure sensor.



For the full story read it here:

http://www.dieseltruckresource.com/dev/showthread.php?t=134503



Please give me any more info if you can and if you have any other questions please ask!





Quad

 

[grabinov]

Quad,



Thanks for the continued assistance. The dealer indicated on the work order:



"Found P0341 Camshaft Position Sensor signal found TSB#18-003-04 to reprogram ECM. Perform TSB and Road Tested. No Code Found. "



When The truck first stalled, it had given the Low Fuel Pressure code. I don't remember its number but I checked it at the time. I guess this code had cleared by the time that the dealer got the truck - I was able to drive it there.



Given your post, I think I may have had two problems. The first: The truck actually needed the TSB 18 reflash and maybe something I did during the sender banjo bolt install caused that issue to come up - air in fuel line, etc. The second: My Quad fuel pressure sensor was probably reading 3 psi in error since you have recognized that this could be a problem (I assumed that 3 psi is not normal, right?). These things in combination (reading low pressure, just messed with fuel line, truck stalls) probably lead me to believe that the Quad fuel pressure install was the problem.



Maybe all I need is a more accurate sender?



If I can get one, I am going to simply install the Banjo Bolt and sender (without wiring harness) and drive around for a while, that way I can isolate the issue.



Can I get you to send me a tested sender and a new set of washers (who pays for these is not the issue, me, you, whatever is fine)?

 

[Axekicker]

Qzilla,



(Edited for brevity) ... I had at that time had the fuel pressure portion of the guage installed for about a week, and had been reading only 3 to 4 PSI for the low pressure side. This seemed awfully low to me and I actually wondered whether I had a fuel pump problem. The truck is otherwise totally stock. (End of edit... )



Thanks in advance...

Greg

*************************************************

Greg,

I had the same problem after I installed the "Monitor" with my "race" box. I was only getting 0-3 lbs reading from the "lift-pump"... so I re-checked my installation and realized that I had the sending unit installed on the wrong banjo-bolt... Here's a pic of the install after I moved the sending unit to the proper b-bolt. After moving the sending unit pressure went up to 16-20lbs (that's with a Glacier pump kit installed)



NOTE: I had to use a 45 degree brass fitting adaptor under the sending unit because it was hitting the plastic injection pump cover above.

 

[CMast]

I would stay away from quadzilla products. I have one laying in the garage somewhere. Worked great for almost a year. I tried several times to get it repaired with no luck. I would also go with edge products. Great customer support. Thats my 2 cents.

 

[qzilla]

Quad,



Thanks for the continued assistance. The dealer indicated on the work order:



"Found P0341 Camshaft Position Sensor signal found TSB#18-003-04 to reprogram ECM. Perform TSB and Road Tested. No Code Found. "



When The truck first stalled, it had given the Low Fuel Pressure code. I don't remember its number but I checked it at the time. I guess this code had cleared by the time that the dealer got the truck - I was able to drive it there.



Given your post, I think I may have had two problems. The first: The truck actually needed the TSB 18 reflash and maybe something I did during the sender banjo bolt install caused that issue to come up - air in fuel line, etc. The second: My Quad fuel pressure sensor was probably reading 3 psi in error since you have recognized that this could be a problem (I assumed that 3 psi is not normal, right?). These things in combination (reading low pressure, just messed with fuel line, truck stalls) probably lead me to believe that the Quad fuel pressure install was the problem.



Maybe all I need is a more accurate sender?



If I can get one, I am going to simply install the Banjo Bolt and sender (without wiring harness) and drive around for a while, that way I can isolate the issue.



Can I get you to send me a tested sender and a new set of washers (who pays for these is not the issue, me, you, whatever is fine)?

If they had a 0341 code and there was a crank position error or it jumped sync with the Cam position sensor then that will kill the truck instantly. I doubt it actually jumped time or the truck would not have restarted. I am guessing it was a glitch of some sort in the truck? The monitor can in no way cause a crank position error no matter what you could do to it!



I am not familiar with that exact TSB number or what it fixes although if they used it because of a 0341 code I am guessing at some point they might have had the tolerance too tight on the Cam/Crank sensor relationship as they both work simultaneously.



I would bet a $100 bill that is what killed the truck.



I would definately stick your fuel pressure sensor or a replacement one in and see what happens. I am yet to see someone with a leak or have it suck air, I just thought it could be possible. I would bet that you could hook it up and go on without ever having any issues. The fact that the sensor was off or could have been off is of no relation, it was just reading off. If you read the other thread I posted you will see it is not a faulty sensor just not calibrated properly.



We will definately send you a replacement sensor and washers. The best way to make that happen is to use the email I put in that other thread as he is handling all of the fuel pressure sending unit replacements. Or you can always call tech support 9-6pm central time at 888-842-6572.

 

[qzilla]

I would stay away from quadzilla products. I have one laying in the garage somewhere. Worked great for almost a year. I tried several times to get it repaired with no luck. I would also go with edge products. Great customer support. Thats my 2 cents.

Geeeeez. If you do a search for cmast posts you will see I tried to help to no avail. If you are not going to work with me I cannot help you. 99. 9% of the people will tell you our support is better than anyones. I work on the forums personally as I can which Edge WILL NOT. Not to mention we have plenty of people we help on a regular basis. If you call our tech line you are going to be helped one way or another.



I guess you just fall into the . 1% category and I am not able to help you. I have tried and tried and I do not care to try anymore.

 

[CMast]

If you want to help me credit me back the last 40 bucks I sent you to have the chip fixed. The good faith money as it was called. By the way if you do a search you will see that my prolem was not you. It was the other guys you put me through to and assured me they would take care of it. Bottom line the chip was sent off 3 times at my COST, now its in the trash. When someone asks about a chip rest assured I'm gonna let them know about my experience with quadzilla technologies.

 

[grabinov]

Friday morning, before I had heard back from QZilla in his most recent post in this thread, I called Quad to try to speak to him directly. The girl there was very helpful, and walked around to try to figure out whom I had been speaking with on TDR - since I know him only as qzilla. She didn't find him and was very apologetic. I said I would just wait for a reply on TDR. She made sure that was OK with me, and promised to make sure I got a reply ASAP. And here is the reply a few posts up. So far I am pretty happy with that level of service...

 

[grabinov]

Axekicker



Now that's the kind of insight I needed! With pix! I'll put mine back in and see what I get. I think I had it in the right place, but I am not looking at it right now, and maybe I was wrong. It certainly seems like you had the same problem as me.



Thanks...

 

[qzilla]

Friday morning, before I had heard back from QZilla in his most recent post in this thread, I called Quad to try to speak to him directly. The girl there was very helpful, and walked around to try to figure out whom I had been speaking with on TDR - since I know him only as qzilla. She didn't find him and was very apologetic. I said I would just wait for a reply on TDR. She made sure that was OK with me, and promised to make sure I got a reply ASAP. And here is the reply a few posts up. So far I am pretty happy with that level of service...

Yeah, I was not at the office and I have only been in an out. My wife has been in the hospital so I have done a lot of my work remotely connected to my office. She is on strict bed rest right now so it is not likely I will be in the office for long periods of time and when I am there I will be buried!



We have a whole team of tech guys and anyone of them can and will help you. If not you can always catch me online at some point but, usually late at night. If not my email is -- email address removed -- and you can always catch me there.



Quad