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Impossible to find cold weather issue

1375 Views 14 Replies 6 Participants Last post by  01_Cummins_H.O.
Hey, been a while since i tried to diagnose this problem, but with local temps around here in uptsate NY getting to about 10 at best, my problem has come back.

I got an 01 cummins HO, 6spd, SBDD, AFE intake, ATS mani, Airdog 2 165, DDP75's (right now) but will have bigger sticks in this summer, and a Smarty.

My problem is I can start the truck up but after about 5 mins (whether plugged in or not) the truck idle starts bouncing, hunting for fuel i think? The other day i drained my filters in my heated garage n found about 1oz of blue gelly stuff (guess it was cold!), but everything else was fine no gel issues, and from what i can tell the w/s filter is still working well (just changed them this past summer). Im wondering if perhaps my smarty being set on 5 is too high for the winter. Idk if I should just turn it down to 1 or take it off. Seems to be the only thing i have yet to try, but that seems a little weird to me that the smarty would be causing my hunting idle issue.

If im driving down the road i have good fuel pressure (12-15), good boost, and the pyro is low, but if i drop the hammer the truck bucks a little, like a burp of fuel goes by and it barks at me (for just a split second). If i come to a stop it hunts for idle and will bounce and almost stall before catching itself, so i end up having to keep one foot on the brake, the other on the gas and rev it to about 1200 so i dont stall in an intersection (quite a hard switch from brake to clutch on hill starts!). If the truck does die, i have to pop the hood, and bleed the fuel lines to get fuel back into the engine, and then get going down the road after apologizing to several cars about y i didnt move when the light turned.

Either way, if you managed to read all this, you must be able to tell me where to look and what to check for, and perhaps if my smarty is causing my issue or not. Thanks.
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found about 1oz of blue gelly stuff
I gather your running 2 cycle oil? Where are you getting fuel at? Then what 2 cycle oil are you using?
i am running some 2 cycle oil, made for my snowmobile, but this is the first year ive ever run it, and i know i had this same problem last year when it got this cold. Gettin fuel at Hess, which they get their tanks filled daily (very busy station)

this might be related but im not sure. When i drained the filters out the color of the fuel wasnt blue, dunno if it was the oil or the diesel 911 additive that changed it. it was more of a light brown color than blue like i thought it was supposed to be.

if u pm me yer number i can send u the picture of it from my phone
Email it I don't have cell service.

[email protected]

Home is second ridge over. No cell towers... :hehe:
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Bout ready to buy a new common rail, like all 4 of my roomates, they never have this issue.
Really? Just wait till you buddies are whining about injector failure and the cost of the injectors or the short block. Your truck is more reliable than the CR engines.
check the APPS voltage to from the apps to the ECM. should be between .50 and .60 volts at idle. Mine is .57 currently when correct.
WRONG! It should not be the tag voltage. :spank: It should be BELOW tag voltage by at least 0.1 volts.
Mopar1973Man's Dodge Cummins Articles - APPS Sensor Voltage Adjustment

I have two year old Timbo
Timbo APPS doesn't have a voltage setting...
Mopar1973Man's Dodge Cummins Articles - Timbo's APPS Installing
Picture I got...
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