Engine/Transmission (1998.5 - 2002) Quadzilla makes my truck to missifre!

[Erska]

Hi guys! I'm new in here. I'm from Finland.

I have registered on a bunch of another forums, but this must be the most helpful ever.

Anyway, I have Quadzilla Adrenaline with pulse and mach6 injectors. Before mach 6's and Quadzilla I had stock injectors and tst pm3 and it never missfired. But that does not prove anything.

Now it act likes this:
I'll get a hard missfire when the boost rises from 0 to up/when quadzilla starts the pump tap fueling. I get a CEL also. A P0253 code.

I lowered the settings step by step and soon I realized that I had the fuel stretch at minimum 1200us and timing 0.
The CEL pops on as soon as the boost rises. Just a second before the CEL goes on the truck kicks/missfires and then it accelerates normally again.

After I unhooked the wire tapping I raised the timing to 7 and it acted normally. Except a lot of power was missing due the lack of wire tapping of course. No CEL's.

So, do I have a bad connection or is there something more going on?
I'm using the Blue Chips pump cover. I did not have it until the Adrenaline.
I parted my truck again, and took the pump cover off, checked the connection. I "beeped" the connection with my voltage meter. I measured the resistance between the wire which usually is tapped and between the blue chip pump cover pin and it showed zero resistance, good connection. So I didn't had to do any wire tapping because that's allright. I also checked the resistance between the blue chip pump cover pin and the wire to adrenaline. It's ok.

It still does the same thing. I was monitoring the pulse and immediately when boost rises to 1psi the fuel stretch takes place and kicks in, or surges, whatever. and the check engine goes on. Even with the minimum 1200us stretch!

And this is with a light part throttle only. Rpm's are under 2000rpm.

And when I rev the engine with neutral, in about 2800 the psi rises to 1 and it immediately starts to missfire. So what's the problem? Is there such possibility that my map sensor could be faulty somehow? I need answers because I'm not liking this! I know that I have bigger injectors now, but even with the 1 psi, it does it. It goes like posessed if I do a WOT run, but it still surges the whole time a little, and when I relase the throttle easily, it surges, rpm's jumps up and down until the boost goes to zero.

Tomorrow I'm going to check the vp44 connector pin #6 grounding. If the ground is weak, can I just put an external one add on to it?
I'm also going to check the alternator, maybe take it off for a short,short, short run to see that does it make any difference.

This thing is driving me nuts. I hope you guys can help me.

My truck is:
Dodge Ram 3500 4x4 SLT Sport 24v QC 1999.
-Not A #53 Blocker.
Mods:
DTT trans, Straight exhaust, 6" Chromed Bull-Haulers, F1 Mach6's&HD springs,HD pushrods, Studs, Firerings, ATS Twins, Quadzilla Adrenaline&Pulse, Gauges, Tst Pm3, Hypertech programmer, Buckstop Outback bumper, Selfmade running boards, 8-9" lift, six 37x12. 5 Pro Comp X-Treme A/T's, Quick PSC steering system with ram assist,access roll-up+All lights modified to fulfil EU approvals, upgraded audios etc...

And here's a pic of it:
#ad

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[Erska]

Guys... where are you?



I also checked the vp44 ground on pin 6. It's okay.



Nobody knows nothing? Helloooo?



Help a newbie in here!Oo.

 

[EBung]

Sorry man all I can think of is 1. Vp is shot hence 253 code 2. Map sensor is bad 3. Too much timing but you didnt run any and it runs better with 7 degrees? 4. Fuel pressure is low. Maybe a call to Quadzilla would help?

 

[Moe]

I can't help you cause I'm having the same problem! I don't have the mods you do and still can't figure it out. I'll be watching the boards to see if you get any help. Good Luck, Moe

 

[Erska]

Do you also get the check engine light?



I was thinking that what's the highest number what the stock map sensor is capable to show? It seems that it allways stops at 56psi. Never seen 57psi. Never! And 56 psi is achieved "pretty easily" Even doing a WOT run for a 15degree hill won't do any difference. However my mechanical 60psi optix goes all the way to the bottom



My fuel pressure is allways over 10psi, and it stil missfires on neutral with no load. So fuel pressure is not the problem.



Quadzilla won't answer to my questions. I have tried several times.



Yes it will go better with more timing, and with more fuel stretch. But the missfiring is stil there.

 

[EBung]

Have you tried pulling back some of the fuel stretch? You might be running it dry. What are the outside temps? You could also change your settings so nothing starts fueling until 50% or so and see what it does then. Also make sure you try the New Comp and 4000rpm tunes.

 

[Moe]

I didn't get the CEL except once and it was a 1682 which is a total alternator discharge. It restored on its own and I cleared the code by battery disconnect. I also run an old EDGE timing box.

 

[Erska]

Yes, I have tried all of those what you were saying, I also mention those things on my first post. I also have tried the TPS and can bus fueling min values to 0- to 70%.

It has been about 0-40F in here for the time I have owned the Quadzilla. I have owned it since november.

I also have the comp 2 tune. It did the same thing with quadzilla factory settings also.

Moe: One guy in here was experiencing this same than we are. He said that one diode of his alternator was bad and it was leaking alternative current to the batterys and that made his missfires. After a rebuilt alternator everything went away. He tried the truck without the alternator and everything went away. I think I'm trying that next. I was just too lazy to take the alternator cables of today... Due the height of the truck and the twin turbo assembly...

 

[JGamble]

In getting with all the other posts, which were great info, Erska, did you recieve the update from Quadzilla for the update to the Adrenaline? They emailed it a couple of months later. PM me your email address and I will refer you to the proper people who you can recieve the update. I guess there was a "bug" in the Adrenaline when it came out with surging and the like. Maybe it will help maybe not. Also, I would contact the Quadzilla tech people... . some of the BEST customer reps in the nation..... if anything else, contact me... .



Best Regards,

John

 

[Erska]

Hi JGamble.



I allways try to be as much accurate as it's possible.



Yes I recieved the late october update e-mail. I updated my Adreanline to comp tune 2 at december.



There's a little language barrier for actually calling the quadzilla tech support, so that's why I'm just using the forums and e-mails.



I would be pleased if you could explain my problem to someone who actually knows these things.



I have explained everything in the first post. Truck missfires at neutral also when boost rises to 1psi/canbus fueling and tps are more than set value. Not a fuel pressure problem.



I'm also registered on the Dieseltruckresource forums where one of the quadzilla technical advisers is often visits and post messages. However, he hasn't answered to my questions.

 

[JGamble]

will call for you on Monday and get back with ya.....



regards,

John

 

[Erska]

JGamble: Thank you! I can't wait !

 

[monkeyman]

I think your problem is stacking it with the Edge, also the entire map is controlled by settings. You may have your TPS Minimum and Max set wrong. I posted the whole setting menu from Quad. I run Jammer 6 nozzles and have the pump strech at 1800. Timing at 7. 5
Rick