I'm haveing the same problem with my juice w/att. Sounds like the valves chattering loud to quiet in short burst. It will stop when I turn it to stock. I'm running the 1.72 ver. at this time.

I was a Beta tester for edge. I'm going to try and call them monday. See what they have to say.

I also towed my camper this weekend. Was in the 34 degrees F on Friday night. And I had a lot of Dead pedal while on the 1 or 2 setting. But the DP would go away when I went back into stock (0). All this was while towing. No of these problems with no camper. Also my fp was never under 8 psi. It would avg. 9-12 psi while running down the road.

Just changed my fuel filter bout two weeks ago. Hopeing that I had a bad tank of fuel.

 

Firemanhoser: You've got it right on, and the same version on the Juice. I haven't hauled anything with mine yet since I've put the new goodies on, hope it doesn't act like you're describing yours does.

For those who are still scratching your heads as to what noise I'm describing, the best way I can describe it is the "hammering" that a diesel does... it seems to change up and down in loudness while on the highway.

Anyway, I've got money set aside for the clutch and some tranny work at some point, so I'm going to keep adding to the fund and cross my fingers that I won't have to use it any time soon for replacing the IP. No codes and no dead pedal, but I suppose from what I've heard about the VP44 that it may only be a matter of time.

 

Could it be timing knock??? From the Box? I just have never had any issue with any of the truck i have ever worked on or my own......

 

Yes, that's probably exactly what it is. My understanding is that advancing the timing will cause it to knock or hammer more... so the Edge is advancing the timing and then backing it off while going down the road... I don't know, just thinking out loud here.

I'm going to double-check my connection on the pump wire tonight and play around a bit with the settings on the edge and take it for a drive. One thing I've noticed, like cmark said, is that it only seems to do it when it's below freezing out, and only when the truck is warmed up to full operating temp.

Firemanhoser: I'd be interested in hearing what they say if you do call them. I wonder if there are any software updates beyond the current version we both have, and how we would go about getting them?

[EDIT]: Also, as an aside, I filled up a full tank saturday and added a bottle of white power service and a 16oz bottle of 2-cycle oil just for grins, and it does seem noticeably quieter just driving around town, especially when it's cold in the morning. I suppose extra lubrication can't hurt, I'm going to see how the mileage is and see if it improves at all on the highway in the noise department.

 

Well, I talked to edge. They didn't have much to say. The most recent version of the juice is 1.0. Which was done in 3-28-06. The tech stated that the Att. has nothing to do with the timeing or motor. Just adjusment to the juice I would guess.

He didn't have much to say about the motor noise. Just that I could have the juice sent in and re-flashed for the current version. I don't know off the top of my head what ver. I have. But I don't think that I'm ready to tear all that out yet.

If anyone else has any concerns about the motor noise. I sugest calling Edge and talking to them. That is the only way we will get anything done to check out this mystery. I don't think that I have had this noise the all the time I have had it. Let us know if you find anything while checking your connections NotMatt.

 

If indeed the box might be the culprit, (Like i said above) has anyone put the truck 100% back stock to see if the issue goes away? This would save some headaches and calls to edge if it doesn't.....just my 2 cents......

 

I might do that... but if I go through all that trouble to remove the edge and the problem goes away, I will probably sell the edge and get a smarty.

Anyway, I drove it on the highway for a short trip today and didn't hear any noise... and man it sure is fun pulling onto the highway on 5x5 when it's fully warmed up and just laying into it.

[EDIT]: Also, Firemanhoser's post got me thinking... I realize too that I have version 1.71 of the Attitude monitor, but I don't know what version of the Juice I have... never looked too closely at that, so I will look tonight. If it's not 1.0, I may go ahead and call them and send it in to have it updated, just to see if it makes any difference.

 

I removed the edge and the problem DIDN'T go away, and I still bought a Smarty. It was worth it.

 

I had the same exact symtom. The problem was that the VP44 timing mechanism was failing and couldn't hold the timing steady under certain conditions. The problem went away when I took my timing box off but returned when I got the Smarty.

 

Makes sense... this may be a stupid question, but is the timing mechanism something that can be serviced or replaced on the VP44, or is it just another aspect or symptom of failing electronics or a pump that's about to take a dump?

 

Practically speaking it can't be serviced. But it can be a discrete failure in that the pump may continue to work fine with the exception of not being able to hold the timing steady under certain conditions. And you might avoid it by not running a timing advance box.

I lived with mine this way for a while. I ditched the EZ and then only ran non-timing Smarty maps until I got the VP replaced. My VP later developed dead pedal and a new set of codes but I don't think they were related to the timing mechanism.

 

NotMatt, I have that exact sound as described, and do not have a chip or other performance mods. Maybe your box is mimicing my VP44 problem, without actually failing! That would be good for you, other than the goofy sound. I have faithfully added Power Service, as no one around here seems to carry much of anything else. I never tried the 2-stroke oil.

 

Same thing here with the timing rattle change. Mine has done it since i got the truck. Mostly happens light throttle full temp on real cold days. Never notice it on harder acceleration and driving say up a grade, or in the summer. Even when the stock vp went and i swapped in the new one about 10 days later it was cold and i had it happening too.

 

I thought I'd update this, as I came across it while searching for another old thread I posted in.

It was the VP44 on its way out. 4 months ago I started getting dead pedal at random and it kept getting worse, I had code P0216. Went ahead and replaced the pump and it runs perfect now.

However, it still hasn't gotten cold enough around here to tell if the strange noise is gone or not, but based on the P0216 code description (injection pump timing failure), I would imagine that was probably the culprit...

So, dying VP44 was what was making the extra noise, I'm 90% certain now.

 

I guess I always thought 24V trucks were very loud from a diesel truck rattle point of view, and was used to that on my truck. Then my VP44 died and I had to replace it. The minute after I fired up my rig after the VP swap, I was amazed at how quiet the truck was (and still is), not a 3rd gen. quiet, but very close. I believe dying VP's are very noisy.