Ford 6.7L Power Stroke Diesel :: Hesitation / Bucking When Going In The Upper 20s / Lower 30s
Mar 26, 2012
Have just about 1,600 miles on tuck born on 12/14/11. Love it, but.. When going slow in subdivision I am getting some hesitation/bucking when going in the upper 20s/lower 30s. When I feel it I look down and I am usually in 3rd. Is this the transmissible thing? When it happened Sunday it felt like it was going to die. If I start off with a quicker start (to get to highway speed) it shifts fine. It just started the last few weekends......
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When I am on the highway, my 2005 Excursion (6.0) will hesitate/sputter/buck intermittently, usually between 70-80mph/ 1800-2200 RPM, but especially triggered by hills and inclines. Each sputtering episode usually lasts about 5-10 seconds and then will go away for minutes at a time. Does not sputter upon take off or initial acceleration. There is no smoke of any kind. Just got it out of the shop where the mechanic replaced ALL 8 injectors and the fuel pump, as well as flushed the fuel lines, and new fuel filters, and oil change (2 injectors were bad, but there was metal in the fuel filters, so to be safe I replaced all of them - ALL OEM PARTS for everything, including filters).
The week before, I had the IPR valve replaced. Also, recently had the back pressure sensor replaced and the EGR was deleted - and turbo cleaned when the EGR was deleted last month. I also tried unplugging the ICP sensor to make sure that wasn't the issue. Dropped $6k into this thing in the past month and about to lose my mind (and wallet). All research points to either clogged EGR or bad fuel injectors, but both have been addressed, so I am not sure where to look next. No current codes showing up. No signs of leaking oil.
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I have recently replaced both tie rod ends and found out when I took my truck for an alignment the mechanic stated that I had bad driver side ball joints (upper & lower) I confirmed this with SEARS and they stated that it was all the ball joints upper & lowers! the Haynes repair manual (1999-2010) states "ball joints on 1999 through 2013 2WD models were not replaceable".
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I have a 2001 f350 7.3 diesel and want some info... I am switching out the air intake and thinking about the Banks package.. How does it can be compared? Also, I am dealing with an issue of a dual generator upper and lower fault codes.. I only have a single generator system and it is running strong as far as I can see.. When I start it shows 12.9 and then raises to 14 when running.. Stays there the entire run...
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I Have A 2013 F250 I Have A H&S On It. I Have It Delete. And The Cel Comes On In The Morning, Ill Get The Code In The Morning. But It Has Something To Do With Coolant Temp Sensor. It Also Does Like A Bucking/Power Surge. Boost Goes From 0-10-15 ,When you Hold Pedal Steady. Do I Need To Update My H&S Or What?
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Truck is bucking and missing every 10 seconds or so and will stall when taking off in drive sometimes but fires right back up? I got a lot of codes in the torque pro app but some are in grey. Not sure what that means. EGR has been deleted so that's why I got those codes. I was cleaning the back of the truck the other day and found a can of quick start . Guess that might be why i got codes for glow plugs also. I'm gonna post up pic of my codes and numbers of truck running at idle in drive. So far I see I got a code for cylinder 6 contribution? It's in grey tho whatever that means.
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After chasing the smell of coolant for a couple weeks, discovered that the upper radiator hose was leaking at the engine. Based on my schedule and drive schedule, and unfamiliar location this last week, I took my truck to the last people I wanted to - the Ford dealer, where they attempted to charge for the hose replacement. During this time I discovered the nature of how these hoses work and asked the tech why they don't just replace the O-rings ... "Ford Motor Company wants to sell you a new hose with labor" - a direct quote from the Ford tech. And that is why Ford is the LAST place I want to go for repairs I cannot perform. I kept the old hose - any spot where you can get the O-rings alone?
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I recently installed an egr delete and ever since, my vents have been stuck to the upper dash no matter which setting I put on. The vent will push the air conditioning, regular air and heat all the same. I have checked the fuses and they are all good.
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just overhauled my 6.0. run great for about 3 days now runs really rough when cold. new heads injectors rings pistons ficm fuel pump icp sensor ipr valve fuel pressure is good. Engine rolls smoothly when cold also.
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We are on vacation pulling the 5th wheel. On the last of the three days driving the transmission starting doing something I have never seen. When running about 60mph and starting up a grade, when I push the pedal and it should shift from OD down, it bucks really bad. It only does it under those conditions and only when towing. It does it when the tow/haul is on and tow haul is off. Also, in the afternoons on the last two da,ys the A/C has started to turn off. The fan still runs but the cooling cycles off. After a while it comes back and is ice cold but then cycles off again. It only seems to do this when the engine fan is running to cool off the engine under load. I have it scheduled at the local dealer for a transmission service and A/C check....
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Truck is running bad when first cranked in the morning, is bucking and running rough until warmed up, think the oil needs to be changed and which additive is better the archoil or Rev x?
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(2000 F-350, 7.3L, 205k miles) Over this weekend, I noticed while driving mostly in the lower gears, that there was a slight hesitation with the throttle pedal depressed about half way or less. Seem to get worse as the day went by, but no lights or anything came on. Changed the fuel filter and added a fuel injection cleaner to the tank. Checked the oil and it was low, so I filled it to the correct amount.
Drove it around the next day, and it seemed to be good, until it warmed up some, and continued to hesitate. The hesitation seems as if it's not getting constant fuel, and the truck jerks a little. Once you get up to over 2000 rpms, it goes away. Looking up other reviews on similar issues, most have pointed to the throttle pedal sensor and just changed out the pedal assembly. Before I take it that far, I wanted to see what was the corrective action.
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2003 6.0 no start. turn the key to on and nothing happens. dash lights up as it should but I don't hear the glow plugs cycle and no fuel gets into the upper fuel bowl. turn the key over and nothing happens. No starter click nothing. tried the starter wire to the battery trick and it cranks but does not kick over. checked ficm wires and they are secure as well as the injector wire on the intake manifold. it is the original ficm.
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Noticed this past month on colder days my upper hose is collapsed, typically a symptom of a bad radiator pressure cap.
This hose is connected from the water pump to the radiator. The radiator is connected to the Degas bottle which has a nonstandard radiator cap.
Do these plastic caps vent the same way a typical cap does?
Cap for 2011 Ford F-350 Super Duty|9C3Z-8101-B
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So, I've been having cold start issues for a couple of years now especially when temps get below 25 or so. It started with virtually no issues until temps got into the 20's but got to the point this year where it run a little rough at startup even in the summer. Once ECT gets up around 140* it runs pretty good.
I took it to a diesel shop last year and was told I had 1 bad injector and a bad glow plug. I couldn't afford to do the work, so I waited.
Now after researching this site, I'm more inclined to think it may just be the FICM. I've seen scangauge numbers in the low 20's up to 48.5. On cold morning FCM will usually start in the low 30's and gradually work up to upper 40's. The batteries were both replaced 2 years ago, but I probably should give them a load test. The alternator voltages vary from 11.0 to 12.5 when cold and 12.5 to 14 once warmed up. I have noticed that the AC blower will slow down a little when I sit at a red light, and then pick up again when taking off. I don't notice it with headlights or anything else.
According to Bismarc's spreadsheet, alternator numbers seem to be in the acceptable range, but I don't want to get a new FICM and fry it with a bad alternator. I can get the alternator or the FICM now, but if I need to do both at once I'll need to wait a bit longer.
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This weekend while towing a light load I noticed my FWT and EOT starting to climb rapidly, EOT reached 260 FWT I think about 240. I exited the interstate to find I had a busted radiator hose. I replaced the hose and filled the system with distilled water, but didn't add antifreeze at this time. The system wasn't completely empty.
I noticed once back on the road my EOT seemed to be higher than normal but FWT seemed to be normal. Could the lack of antifreeze cause a greater delta between FWT and EOT? I have seen articles which state do not use Ford Premium Gold Coolant, but to use CAT EL-1 coolant instead. Which should I use?
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2006 F350 6.0 ... I am piling up parts for a bulletproof party later this summer. It has gotten grumpy ahead of schedule. I will hook up the AE tomorrow for consultation.
In the meantime. Running rough at 50. Seems to accelerate from a stop semi ok. Sitting at idle, holding rpm at 1750 I hear kind of a thump under the hood and the rpm drops 300, then slowly finds it way back to 1750 and it repeats itself.
This thump has not been noticed in the past. Could this be the VGT not working as expected?
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Should the upper fuel bowl be empty after sitting for 30 minutes?
I believe no. Which would indicate to me a stuck open injector which Iv been suspected of. Iv been trying to track down a miss that I have and Iv been suspicious of a bad injector but ain't been able to pinpoint which one yet.
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(E350 van)... I smelled diesel fuel inside the van tonight and used my flashlight to investigate the leak. The cover around the blue spring is damp.
Before I remove every again to gain access to the filter housing to fix the leak, what I am may encounter. Seems like a good time to do the blue spring upgrade. Can I access the egr valve to inspect and clean?
What are the possible areas to check for the leak? Sometimes finding little problems leads to finding big problems. When my FICM went out I discovered the battery terminal clamp was broke.
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Since our weather has returned to the cold side......my truck has started bucking and hesitating at 45 mph with EOT @ 130 and ECT @ 140. I can gas on it and it will clear up/let off and it would start up again once it gets below 50 mph. Once the deltas reach 150+ it clears up completely. Its never done this until this week. FICM volts are steady @ 48V. What is causing this or what to look for?
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I have an isspro gauge and did the blue spring about 5 years ago. Since then my fuel pressure is in the 65psi range.
Last week it dropped to 50-55 normal driving and I figured the HFCM was on it's way out (195,000 miles). Replaced the HFCM and the pressure was a bit higher, but not back to it's usual range. Then pulling the boat home from the lake a couple days ago, I saw it at 45psi. On a couple hills it went as low as 40 psi, so I was getting gripped...coasting downhill it only went back up to 50 psi and no higher. Got 'er home and currently not driving it.
In garage with Key On Engine Off, during injector buzz, I can hear a hissing/air noise at the upper filter bowl. Also, the bowl drains empty once the pump cuts off and the sound of air stops too.
I am hoping it's a regulator issue, but I don't know if they are known to wear out or go bad, or if something else in the upper filter housing went bad. So I ordered a new upper fuel filter housing which also has the oil filter tower attached and I'm assuming that these new units would come with the blue spring upgrade already done.
I can check for codes tomorrow when I bring my computer home from work, so I haven't checked for codes yet. I pick up the new filter housing tomorrow and will periodically check back here during the day tomorrow.
Also, while I'm at it: the new HFCM doesn't have the heater. Can I just leave the old connector from the harness un-connected to anything?
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