Truck stutter on acceleration.
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Truck stutter on acceleration.
Hi all first time posting but not my first time on here. I have a unusual issue with my truck. One day at the river I went hard on the throttle and the truck stalled out. It restarted but was chugging only when in gear. Idle is normal and then once the truck goes into gear and I left off the brake it starts stuttering. When on the road at light throttle it stutters a bit, but once I push down the go pedal its gotta plenty of power. It also seems like the truck wakes up at anything over half throttle. I replaced the dim, icp, ipr done a buzz test replaced the uvch on both sides. I've done hutch and harpoon mod in tank and I have the hydra chip which no matter what setting it is on it still does it. I'm at a loss of what it could be. If anyone could give me some point to look at next would be great.
Got Data?
Joined: Dec 2012
Posts: 4,287
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From: Lake Stevens, WA
Tell us about your truck, model, year and such. I'd recommend putting the hydra in stock tune, or removing it to continue troubleshooting, to eliminate it as a cause.
Have you set up a scan tool like Forscan to watch parameters like ICP, IPR DC, FIPW when the stuttering occurs? Any codes?
How is the fuel pressure at idle and under load? This might be less important right now, since you have good power over 1/2 throttle.
Have you set up a scan tool like Forscan to watch parameters like ICP, IPR DC, FIPW when the stuttering occurs? Any codes?
How is the fuel pressure at idle and under load? This might be less important right now, since you have good power over 1/2 throttle.
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2000 f-250 4 door short box, I have the edge monitor and will have to get the numbers when I get home I tried putting it back on stock settings with no change. I also get a weird burning smell when WOT. I don't have a fuel gauge but it pumps fuel into the bowl on top. I've used a buddy's snapon code reader but didn't show anything for drive train or injectors.
Fleet Mechanic
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From: Albuquerque
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Logistics Pro
Joined: Oct 2011
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From: Mcdonough, GA
Make one of these and get some soapy water to spray down the boots and intakes
https://www.google.com/search?sxsrf=...jK_Qai-KDgDQ31
https://www.google.com/search?sxsrf=...jK_Qai-KDgDQ31
It's a Van Gogh
Joined: Feb 2010
Posts: 7,817
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From: Elk Grove, CA
FORScan on your android device with a bluetooth dongle. That is a nice one but you can find way cheaper
on Amazoo.
And good on ya for doing all that work beforehand!! All makes sense and will benefit the truck, even if not curing this particular issue.
All replaced sensors the quality ($$$) OE stuff?
And good on ya for doing all that work beforehand!! All makes sense and will benefit the truck, even if not curing this particular issue.
All replaced sensors the quality ($$$) OE stuff?
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
If you replaced any of those parts with crap from the autoparts, start there.
I have yet to see an IPR or ICP sensor that was not Motorcraft work right. Those (2) things can cause wacky stuff like you describe.
Try unplugging ICP sensor and see if it makes a difference in the way it runs.
I have yet to see an IPR or ICP sensor that was not Motorcraft work right. Those (2) things can cause wacky stuff like you describe.
Try unplugging ICP sensor and see if it makes a difference in the way it runs.
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I spent the $$$ on only motorcraft parts the icp and ipr almost gave me a heart attack on price 
. I haven't checked fuel pressure yet how do I check oil pressure? I'm still a bit new to the diesel world but I know enough to replace parts and troubleshoot a bit. I have not swapped the cps yet. What is the honest to God CPS to get?
. I haven't checked fuel pressure yet how do I check oil pressure? I'm still a bit new to the diesel world but I know enough to replace parts and troubleshoot a bit. I have not swapped the cps yet. What is the honest to God CPS to get?