Spit/sputter misfire? Defueling?

[OlPurp98]

So this has been an on going issue for quite some time and have hit a road block, under heavy engine load ONLY with tuner turned up it will spit/sputter best way I can explain it is it sounds like I'm bouncing rev limiter, within the last 8k miles I put on a fass pump new vp44 and a revmax trans ( trans was slipping and thought that was the problem spitting and sputtering at 2700 rpms) now she spits and sputters at all different times based on current speed engine load tps and level of tune. I've checked fuel pressure 17 at idle /14 at WOT /,  less than .075v of ac noise in alt. Have a p1693 in the pcm that stays after cleared and p1475 witch has not come back yet. tps seems to be right on the money crank signal seems good on my Solus ultra never drops off.. but the B+ voltage on the VP averages 12.1v  and will spike to ecm v randomly when ecm v is 13.8-14.1 is this normal or is this the whole problem do I have a ecm on the way out the door? Did I get a **** vp?  Any help would be nice 

Edited April 9, 2019 by OlPurp98
Post pic

[Mopar1973Man]

Alternator is marginal at 0.075. I would replace the alternator or diodes. Then do the W-T ground mod.

[Dieselfuture]

That would be my suggestion also, ^^^^

Next step would be injectors

[Mopar1973Man]

[OlPurp98]

So I just slapped an alternator on it and took her for a spin same problems but now I have a nasty knock when it tries to take off. Set the tuner back to stock throw it to the mat and still hear it trying to act up but can't physically feel any difference. As far as the ground mod goes is this a necessity because I'll try it but I'm running out of time fast I have 2 weeks before I have a 10hr trip towing 10k and would like to have it fixed by then if that were the problem is there anyway to identify it without tearing the harness apart check resistance across a wire maybe idk? Should I throw a set of injectors in it next and try it? Again thanks for any input 

[Mopar1973Man]

Did you bench test you new alternator? Are you sure you have a good alternator. You can unplug the field lead and test drive it.

[Dieselfuture]

Have you adjusted valves yet, what kind of knock,  is it coming from engine 

[OlPurp98]

No I didn't bench test just went and bought a brand new one  and no never have adjusted the valves but it sounds like a nasty bottom end knock kinda like a spark knock on a gas engine and here is one key piece of info I left out I bought the truck off my old man who only drove it about once every 2 months and would start it here and there let it idle to about 150 and cut it off possibly gummed up injectors that have finally crapped the bed? But I've put 15k on it in 2 years???  And I will unhook the field lead and test drive tomorrow 

 

[Evan]

Injectors 

[OlPurp98]

Okay so I bought 6 brand new rv275 40+ injectors and new tubes installed while I was at the shop I did the ground mod.. ecm voltage is around 13.5 all the time (seems low to me) and I wasn't sure what to do with old alt charge lead where I cut it near the ground splice (still had B+ voltage) so I just taped it up and let her rip so some input on that would be appreciated. And the verdict is it still spits/sputters under load still have the fuel knock it literally sounds like it's running lean poping and cracking out the tailpipe. Still have the p1693 code if I turn the tuner up in park and hit the go pedal shell smoke, then reach up put it in gear and hit the go pedal (65-75 throttle position) it just starts to hop up then spits sputters pops and cracks with no smoke. Possible a brand new VP went out?? Looking forward to replies! Thanks again

[kzimmer]

Is your quad running V1 or V2 tuning? Either way, have you tried adjusting injection timing? I'd maybe start there, depending on your tune. I know when I used to run V1 tuning, mine would pop a bit up top with too much advance. It's hard to explain, but I actually thought it was a trans problem at first. 

[dripley]

I dont know about the spitting sputtering. I do know you need to at least disconnect the old charge wire from the PDC if you did not remove it. It is no longer needed. You dont want it shorting to anything.

[OlPurp98]

I'm running the factory V2 tunes and I'll be honest with you man Ive messed with the custom tuning but Im really not comfortable using them scared I could tear something up I've thought about buying the pdd monitor with their tunes on it! I feel fuel timing in the pump is off from a dig it'll act up when I'm about 2200 rpm at 55 TC locked is when it's really pissed if I ease into the pedal about 1650 to 1800 she's poping cracking raising hell turn the tuner down to stock full fuel to 2700 no sputter 

[kzimmer]

V2 tuning really requires a custom tuning approach to be fully successful. That's the premise behind it. If you post up your tune, and/or a data log of the issue, there's some very helpful people around here that would help you out. Make sure you've read the V2 tuning articles as well. Also, what is the build date (software update date) on the Adrenaline? Have you flashed the latest version?

[OlPurp98]

So here are the data logs canbus fuel at 0%?? Have b+ at pump tap wire KOEO.. had a buddy ride with me and the nasty noise from 4th gear locked up and lay into it he said it was an "exhaust crack" and his used to do it all the time when he fueled hard or and the turbo wasn't lit and when he downshifted and rpms went up  but he said that my spit and sputter from a dig wasn't normal and something was definitely wrong there. This morning driving in the day light on level 10 at 50mph went to 70% throttle it popped and cracked and it hazed a good bit of grey smoke but my buddy said it should have ploomed black so idk egts went up there like I had fuel? Oh and the fuel pressure at 0 I don't have the sensor for the quad yet earlier fuel pressure reading where right off the fass with a buddy in the bed reading the guage?

And here's my 1st shot on the custom tuning y'all tell me how she looks

Edited April 14, 2019 by OlPurp98

[Mopar1973Man]

58 minutes ago, OlPurp98 said:

it hazed a good bit of grey smoke

 

Too retarded if it got grey smoke. What is your current timing settings?

[OlPurp98]

Well it won't let me post pics of the rest but I'll type it all out 

Rpm timing max

12.5/1500

15.5/2000

21.0/2500

24.0/3000

25.0/max

 

6 power levels 

3200 rpm limit

 

Max valet mode power 100% 

 

Max fuel stretch 1725

Tps max 100

Tps min 25

Minimum pump tap % 0

Pump low boost scale psi 7psi

Boost scaling 37psi

 

Max load timing offset 1.5° 

Low psi reduct 2.5°

Timing reduct scaling 100% 

Light throttle timing adv. 2°

Light throttle load limit 0%

 

 

And when I try to apply the new tune it says x amount of tunes failed to update every time I try 

[Mopar1973Man]

I was right... Too retarded. 

 

1500 RPM = 15°

2000 RPM = 18°

2500 RPM = 21°

3000 RPM = 24°

MAX = 27°

 

Low psi reduct 4°

Timing reduct scaling 50%

Light throttle load limit 30%

 

Adjust to what I posted...

 

[OlPurp98]

And when I try to apply the new tune it says x amount of tunes failed to update every time I try to install running 1998-2002 V2 Dodge version 2.7

 

[Mopar1973Man]

Have you updated the flash possibly? You are running the correct vehicle type I just wonder if the firmware needs updating.