So....do you downshift or simply push the clutch in and coast to the stops??? You have turbulence somewhere!! Too much air!! Try down shifting if you don’t already do it!!...or just leave it in gear til you stop!!
Unfortunately, that's not always an option sometimes when you catch a stop light wrong or unexpected traffic. A lot of the times I downshift and just engine brake as long as there's plenty of room. My car died twice on me last week leaving work just going home with a 2018 JLT intake and tune. RPM dips to about 500, Lamba goes to about .76 to .78 then it dies. Sometimes I'd be able to recover from it and give it a little gas to keep it from dying. It's a very intermittent problem though.
Well, for what it's worth, it has been 7 months since I adjusted the air filter (moving it away from the big mouth) and I haven't had a stall since. I am still convinced it was turbulent air.
Think the Velossatech is causing the extra turbulence? The times mine died were at pretty low speeds, but possibly enough to funnel some extra air through the filter.
I think the Velossatech was a contributing factor. It was probably the big mouth, MMD V series grille, and PMAS air filter placement. They all equated to too much air blowing on the filter which was causing stall issues coasting, in neutral. The car would never stall in gear and in 20.00 vacuum
I usually only downshift when I am going to go around a corner, otherwise I just push in the clutch and put in N when coming to a stop light or stop sign. I dont think turbulence is the issue since I can't recreate it, even if I take the exact same path at the same speed and everything. If it was a turbulence issue it should have been happning right after the JLT was installed, yet like I said it was on for a year and a half before this issue arose out of the blue. The only thing consistent with it is, it happens after driving for a bit.
Just got a new battery almost 2 weeks ago. IDK what the voltage is supposed to be while idling. I know its fine while driving, as you can see pulling into the parking t it was at 13.9. If the low voltage is the culprit then it should do it all the time when the voltage is low, right? Even after the stumble I'm sitting there with 12.7v and no issues for the remainder of the video. I will have to see about logging things , but IDK how to tell what the logs would say. Maybe Ill be able to post it up here and someone might know what is the issue.
It's hard to say if the voltage caused the stumble or if the stumble caused the voltage drop. I think you're okay at 12.7v, but 12.2 is fairly low.
Ill be cleaning the MAF tonight and testing, then the filter this weekend. I have an SCTx4 that I used the canned tune supplied for a JLT 110mm CAI. Its been fine for quite some time so I am leery on thinking the tune is the issue. I did have a friend tell me he was having a similar issue and it ended up being a O2 sensor.
Installed four VCT solenoids Saturday and the idle is rock solid. I honestly dont remember the last time the idle sat so still, it has always wiggled on the gauge a little.
