So, for a while, I thought maybe I was breaking traction in the high gears, 5th and 6th, when I would pour the coal to it, usually the roads were a little wet, so I couldn't confirm for sure, but I had my doubts. Saturday, my wife and I are driving home, I hit the free way, trucks warmed up to temp, and I accelerate like normal to merge up to speed, but I could definitely tell something felt off.

 

Under normal driving, I dont notice the truck missing or stuttering at all, like cruising speeds,, but when I lay into it pretty good, it has what I can only describe as a miss, but the truck doesn't sound like it's missing. You just feel it, even my wife said she noticed it. I slowed down and couple times and sped up quick, and would get the same thing to happen. Its hard to do in the lower gears, 5th and 6th I have more rpm range to test it, but what could it be?

 

No codes

 

Clutch has 80k or so on it, southbend

 

Injectors are God knows how old, so there's another possibility. 

 

Fuel pressure does what its done for years, it drops, but not enough to starve to i.p. 

 

Any other ideas? If its injectors, then I'll probably do those along with getting the head surfaced( leaking coolant from passenger side)

31 minutes ago, wil440 said:

What does FP drop to....

 

As for the quad, i've never looked at a timing curve on mine, load a tune and go.... don't have time at the moment to figure it out and with a stock trans it's more than enough on a downloaded tune, I also doubt a quad would cause a vp to quit without it was quitting anyway

 

I'll get back with the f.p. here shortly, gotta run up north from here... 

 

As far as the quad leading to vp death, its not that it would just cause it to die after install, but pushing that much more power through a 19 year old vp.....idk man, may just wait till this one poops out you know.

Update:

I'm sitting at 11 when its pedal to the metal. Seems good to me. Idles around 19. 

I bought my Quad and pretty much use it as a timing box and for gauges. Still haven't tapped the pump wire.

 

However, if you need injectors then I'm not sure how an Adrenaline factors in unless you would buy bigger injectors if you had one.

Ya, at this point, im trying to narrow down the miss. Ill look at the quad later, or if I narrow it down to the EZ being the problem.

 

Its odd, when I was driving it earlier, It didn't skip a beat...this morning though, it skipped a couple... its hard knowing if the cold weather is playing a factor

54 minutes ago, Alexio Auditore said:

beat...this morning though, it skipped a couple..

I wonder if your intake air was still cold enough that the ECM was adding timing. That 3-4 degrees of timing advance, coupled with weak injectors (pop pressure) advancing timing may been too much, and caused the skip.