LorenS

That's surprising to me. Didn't even OBD1 cars use IAT to figure fueling and timing? Or, does the ECM still see it and make adjustments so the Quad doesn't need to make changes?

Over the last week I've noticed some strange behaviors from my truck and want you all's opinion on whether I'm being paranoid, I just need some maintenance, I'm about to have a serious truck breakdown to deal with, or something else altogether. Background: I'm in Minnesota, and my fuel tank is full of local "Premium" diesel. Temps are ranging from the 20s to even a few days in the 60s. Fuel from the same station I've used a lot in the past, newer station, sells lots of diesel. Other guys I work with fuel here, too, no problems. I'm running my Quad on Level 2 for MPG, as I have for a few thousand miles. Fuel pressure is unchanged. Can hardly tell about MPG changes as sometimes I fight a 40 MPH headwind on the interstate, and by the return trip don't get the benefit of a corresponding tail wind. Also, except for 100 mile round trips to a "neighboring" town, most of my driving is just putting across town to the local pork plant and back to the hotel. I've been keeping over 1/2 tank of fuel. Symptoms: I have had my "Turbo Timer" set for 300 degrees and until this week (after getting fuel the last time) the engine would run maybe 10 seconds after shutoff, even when 60 degrees out. The past few days despite it being in the 30s to 40s my truck would run for well over a minute before finally shutting off. I have since bumped the shutoff temp to 325 so it actually shuts off before I make it into the hotel from across the parking lot. This is even with a coolant temp of maybe 150 degrees (drove to hotel for lunch from the plant, which is just a couple miles of flat ground). My EGTs had seemed to be higher than normal despite same route, driving style, tire air pressure, etc. I have not noticed any excessive smoke, and boost pressure seems same as always, though I admit I don't usually pay a lot of attention to that. I thought maybe the thermocouple was just going bad until I had some rough starts the last two mornings, and even sputtered some at lunch today. This morning it hardly wanted to start, acting like it had an abundance of air in the fuel system, belching unburned fuel and running like crap. Once it ran for 10 seconds, it seemed normal, leading me to believe it's not a fuel gelling issue. Used to be when I flipped the key to Run to let the grid heater do its thing the fuel pump would run its couple of seconds, the pressure would come up a little and SLOWLY bleed to zero if I sat there long enough. Now, the pump still does its ~2 seconds of prime and the pressure just falls to zero FAST - actually, as I type this I'm not 100% certain the pressure comes up much, but I do here the pump run, and like I said above the fuel pressure is otherwise same as always. There is not a puddle of fuel under the truck, though I swear I have had a small leak from near the VP44 dripping down the front of the engine; however, I can never find it! Air in fuel causes delayed ignition, does it therefore also contribute to higher EGTs? Is this just a simple case of needing some fuel plumbing maintenance, or...? Not sure if if it's in my signature, but I run a stock "formerly engine mounted" pump, relocated to near the fuel tank, draw straw, 3/8" Parker fuel hose, stock filter housing, no banjos on the supply side. Would love to read your thoughts on the matter, thank you in advance. I will not likely be able to read or respond until tomorrow (Tuesday) evening.

I'm sorry to hear you're still having a lot of pain. Lots of people out walking around here in KC, but last week when I was in MN no one was out (still snowing). It wasn't too far south of Council Bluffs that things were starting to turn a little green. Maybe some spring time weather will help your recovery.

@Threadzy I just clicked on this link, and it's still $525. https://www.benzforce.com/collections/holset-hx35-he351-accessories/products/new-genuine-holset-he351w-4043980-4043982-he351

Should we be on the lookout for a new YouTube video?

How is your ankle coming along? Hopefully you got up and moving around really good before the Coronas hit. Have you taken the new turbo out for a drive? If so, what did you think?

All good information, thanks for sharing.

Every 0.59" is appreciated when trying to climb in the truck! I just looked at the Cooper website, and going to 245/75/17s will take me down 1/10th of an inch and loses 2 pounds per tire while narrowing the tread 3/4 and resulting resistance. Going to the 245/70/17 would take me down 1.1" and shave 6 pounds off of each tire, but it loses 195 pounds of capacity (3195 vs. 3000) per tire, for anyone that cares. Since my truck doesn't run like a Cheetah on cocaine or even caffeine, I need it to as least look a little cooler with the 1.1" taller tire! May go with the 245/75 tires next time.

I do, but don't have super wide wheels nor 285s. The tires on my truck when I bought it were 285s, but I knew I wanted to shorten it some for the same mileage reasons, and for climbing in since I still have not found or made running boards, steps, rails, or bars that I like and only have a 32" inseam! I'll try to remember to post them from my computer.

I have put 40k mostly highway miles on my G015 tires and have lots of tread left. They do fine on wet pasture without tearing up everything, though 4WD is key on hills with no weight in the bed. I'd buy them again, but would like to try an American brand like Cooper next time. They own Mickey Thompson.

I see, whoops.

@Evan is one of your new tires supposed to be 265/70/17? See 4th picture down. Simple Tire has done me wrong in the past - wrong ply rating was sent. I ordered the right part number, they sent the wrong thing.

I still like my 3rd gen steering. I don't do a lot of rough off-road needing articulation, but the potholes where I drive can put a beating on parts. I've hit some doozies and every time I check toe, it's spot on. I do hypothesize that the steering gear will have a slightly shortened life, but cannot estimate by how much. There's not much flex in anything to soften a big blow; of course that is one benefit to slightly larger tires. If I didn't already have 17" wheels and brakes, I'd seriously consider 235/85/16 tires and a gear change to 3.73 (my rear gears are VERY worn so would just change the fronts, too).

If you don't like the idea of jumping all the way from 3.55 to 4.10, I have found 3.73 gears for Dana 70U axles. I believe it's Yukon Gear but wouldn't swear to it.

"Arrow in the Crock-Pot" is not defined in that document.

Thought of this when I saw the hieroglyph. pitch-in-trash-litter-sign-s-4498.txt Are you referring to the 16 page, 8MB file that's hidden on their website only where Google can find it? It doesn't teach Egyptian, either. Reminds me of 2008 when we got new phones at work. There was a hoagie bun in a Brandy snifter and somehow I was just supposed to know that was the speaker phone button.

I only dragged it up there so it was bigger in the photo. I assumed it was the reason for the yellow exclamation point. Not knowing what that symbol meant (I'm not Egyptian), I needed to start with that. I think I just turned off the warning as Greg suggested; didn't restart the truck after turning off warning, was just in Run position. Will find out sometime tomorrow after I change my radiator and go for a test drive.

What is the yellow hieroglyph? Is that fuel pressure? If so, how do I make Quad calm down about not receiving that signal?

I agree. The gauges may be little brighter than the dash lights, but it may also just be that the old lights are behind 19 year old plastic. And, with that special cord (part number R82003) the light dimming sensitivity can be adjusted to match the dash. I do not yet have that cord as I forget to order it every time I have a Geno's order (cheapest place I've found so far for the cord).

What is the common pressure setting for this switch? 20 PSI or so?

No longer a paperweight! Checked power this morning at the Adrenaline plug, had power. For the heck of it, decided to see if that magically made the IQuadBT work. My phone found it, connected, and I saw info on the app gauges! I guess it took 10 times of unplugging and plugging back in to make a good connection. Possible corrosion, who knows, but it works now and I'm happy!

I think I understand, but better make sure. Do you mean it will be bad/aggravating/whatever because it will connect during Wait To Start, then get cutoff during starter cranking, then have to reconnect once running? If that's bad, I can try to use Fuse 9, I have a spare "Add a circuit" gizmo like I used to connect my gauges to the dimmer (maybe fuse 6?); I hope there's room! For about the 10th time I disconnected the main plug from the Quad, and checked that I had power at the plug. Plugged it back together and for the heck of it decided to see if the phone could find the iQuadBT. It did! Once I permanently wire the signal wire I should have a usable Adrenaline!! WOO HOO!! "Max MPG" here I come!

That part I did not know. Comes with being computer ignoramus.

Wife's phone is an Apple, and tablet is super old. Laptop's bluetooth couldn't find it, either. Since this thing is used, I don't know if there's a bad wire or connector in the harness that is hidden. Will unplug box tomorrow and check harness wires with ohm meter.

I looked for guidance in the Articles section and found your tuning videos, never thought to look in the Vendor suppository.