woodtrucker

Just unhooked the edge EZ. Gonna run out today and see how it does pulling. I definitely noticed that it was far worse at 20 degrees outside than it was at 28 degrees the other day. So one characteristic is that as the outside temp goes colder the issue worsens.

Just unhooked the edge EZ. Gonna run out today and see how it does pulling. I definitely noticed that it was far worse at 20 degrees outside than it was at 28 degrees the other day. So one characteristic is that as the outside temp goes colder the issue worsens.

No but I plan to do that this weekend. Although, I did have it hooked up before the injector install for about 2-3 weeks and never noticed a single problem. I put the injectors in with the tuner and then started having the cold weather problem. Summertime it runs like gold. Thanks for hanging with me on all this. I've not been able to pinpoint any iat sensor or code issues at this point so I'm moving on to other issues. I want to run the EDGE a few days while it is cold and confirm the problem is still happening when pulling the normal grades around home and then I'm going to yank it off for awhile and see what happens. TJRocks You need the MX version for iphone I think. It's actually $80 but the android version is only $50.

Funny I didn't notice the stumble as much especially as it got warmer on coolant temp tonite. seems to Be worst when truck is working harder. I.e.-pulling steep hill while on it hard in 5-6 gears. I really noticed it back in October towing camper about same temp as it is tonite and I was not quite up to full operating temp and it was really herky jerky on interstate. I like problem solving but this might be just a sneaky gremlin that I'play just hafta live with!

I was able to use my buddy's can obdII scan tool and take some live data. At key on the coolant temp and the iat was the same. I ran truck until it got up to coolant temp 187-188 normal and the iat ran about 68-72. Is that normal for 30 degree temps outside? I was def not reading 95-130 degrees on iat and I have stock filter box remember. So would that mean it's reading too low? Bad sensor?

will a regular scan tool do this thru odb2?

I don't run any additives. Just Edge EZ, RV275's, winterized fuel, and some 2 cycle. That's it. I am going to check out this IAT sensor and see if it's reading properly. Just need to find out what kind of resistance a good sensor should run at. I appreciate all the responses and I'm a problem solver by trade (mechanical designer in the Aerospace Department at Virginia Tech) so this has been a fun problem to solve and learn about. Just hope it doesn't end up costing me $$$. Regardless, I have another reason to love summer the way I do. Truck runs better!!!!!!

stock box unmodified. thanks for the info!

That's the hardest pull I ever made and never goes below 13 psi. The Fass DDRP-02 usually runs 13-14psi on the bottom. I know it's not a 150 pump but it seems to keep up pretty consistently at 13-14psi. KATOOM, I wonder if I could find a cheap thermocouple temp gauge to temporarily rig up near the IATsensor to monitor the temps when this is happening. It's funny that once it starts getting cool in the fall 40-50's it runs better than when it's really hot out (diesels like the cold air) but as that IAT drops when ambient gets colder below 40 it's starts running like crap. It's certainly a timing issue. I might try to call Edge again and talk to them about this.

Thanks guys! I called Edge right after I put the module on about the issue and they assured me that it wasn't an issue. I'm not convinced but it does seem to work pretty good otherwise. Here's all the live data I got! Haha. This was back in august on a super hot day pulling my rig up a steep grade. I topped the 3-4 mile grade running about 60 with these levels and truck doesn't hesitate one bit. Pull that steep grade tonite and after coolant gets up to temp and it would still hiccup and hesitate on the low end of rpm band and as the boost builds.

How do you hook up a live data tool and where would somebody access one? I've asked around with no luck so far locally. KATOOM,I've noticed it on all levels but it's not as noticeable on level 1 as it is on level 3. It didn't start until after injectors and it COMPLETELY non-existent issue when outside temps are about about 40-45 degrees. The heavier the load you are hauling the more noticeable as well just. ie-went camping a month or so back and we left out of the campground at 8 am and it was 33 degrees out. I got out on the interstate it when it happened it would jerk the camper around a little each time it cut out/stumble. I've pulled that camper all over the blue ridge mountains in the summer and it runs like a top. strangest thing.

Sorry for such a late response to this thread. I just realized that you guys responded. Just for the record. Cold weather is back and what I call my "timing advance stutter" has returned. I pulled camper all over va, nc, and sc over the summer and not a bit of hesitation anywhere. Pulled the camper home in the high 30's last weekend and it hiccup'd a few times when pulling grades. It will not happen if temp is about about 45-50 degrees. I guess I'm advancing the timing just enough in cold weather for it to run rough. Never had the problem until I put RV275's in with the EZ on. It's still noticeable with level 2 and maybe even level 1 but I have have not run truck in the winter without EV to see if it goes away. Below are my specs on my truck. 2002 CTD,4x4,QCSB,4" DP -5"exhaust, NV-5600 6 speed,3.55 gears, Anti-Spin Rear Diff, Fass DDRP 02,VP44, isspro gauges, Edge EZ, RV275's, tires size: 265 Michelin MS/2's, 16100 lbs gross-28ft 5th wheel I wonder the high idle/MPG fooler would take care of this cold weather problem?

I read the thread on IAT relating to MPG performance during winter weather. I have possibly a similar issue and was wondering if anyone else has experience or if anyone might know what is causing it. Just a piece of mind thing more than anything. Set Up: 02 cummins, 6speed, 102k miles, with Edge EZ and RV275's Symptoms: I have confirmed that during cold weather usually below 50-55 degrees I have a noticeable hesitation around 1400-1600 rpms when I get down on it. My version of a romp does not involve spinning up a $1000 set of michelins so just know that I don't hammer on my stock clutch like that. It usually happens in 5 and 6 gear. Especially in 6th if I'm low on the rpm band when I give the beans. It's usually even more noticeable if I do that at the bottom of a fairly steep hill and about mid ways up the pull as I increase throttle heavier, I can feel it cut out a couple times. Feels like two or three quick bumps. I have not noticed this at all since we've had warmer weather. Causes: Could this be a air/fuel ratio issue? I am going to pull my IAT and see how nasty it is as a first cause. Anything else that I could check to help figure out the cause would be very helpful!