Ford 6.0L Power Stroke Diesel :: Transmission Bucking When Shift From OD Down - A/C Turning Off And On
May 26, 2015
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....
View 12 Replies
Advertisement
I have a 2005 f250 super duty turbo diesel 6.0 automatic. The problem I'm having is, when I engage the tow/haul button the transmission doesn't down shift unless I feather the pedal. Also the engine will overheat at times. I've replaced the thermostat...
View 6 Replies
I am using my son's truck this week, 2012 F250, 120,000 miles or so. I left it running in the drive while I got something from inside the house. Guess it was idling approximately 10 minutes. When I put it in reverse the transmission would not shift and the truck didn't move. I killed it, re-cranked it and it went in reverse.
As I was driving down the road the transmission would change gears up and down for no reason. I stopped the truck, and put it in park. I would put it in drive and the transmission sounded like it wanted to slip. I put it back in park and the transmission would not engage. I then killed the truck, re-cranked it, and it drove fine for awhile and started doing it again,
I kill the truck, re-crank it, and we go down the road.
View 13 Replies
Well I've been towing for almost 150,000 miles with a 2012 6.7 Lariat 4 wheel drive. Things have been going pretty well with the truck. I noticed some sluggish and indecisive type shifts early on but now I'm worried. I depend on this truck for pulling a horse trailer all over the country and Canada. Just recently I've been getting a hard shift or a thump or a clunk when shifting up or down in to second gear. I'm at about 152,000 miles and did a hot flush with LV ATF at about 148,000 miles. Should I worry or keep running?
I have a 97' PSD I'm thinking of giving a nice paint job and a flat bed but am reluctant to do so due to financial concerns and the fact that some folks may not want to see me pull up in an old truck no matter how nice it looks. My tranny temps have been stating under 200F and I really keep an eye on the temps when running up and down the hills while towing. The trailer is a 35' Gooseneck with a max GVRW or 14,000 pounds. Should I wait for the tranny to grenade and then drop in a built tranny and if so who's building these tranny's stronger than stock? Long time no see but this site has always been my go to for all my Ford truck questions, upgrades, etc.
View 5 Replies
Any input on replacing the entire transmission valve body or just individual shift solenoids? My truck has begun experiencing a harsh shift from 1st to 2nd under light acceleration accompanied by occasional shift flare from 2nd to 3rd and 5th to 6th. I have located parts to do either job. It looks straight forward from just disconnecting the harness. I also understand there are different bands associated with the solenoids. Is there a requirement to have new transmission programming to accompany swapping these components?
View 2 Replies
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?
View 14 Replies
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.
View 8 Replies
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.
View 14 Replies
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.
View 14 Replies
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......
View 14 Replies
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?
View 14 Replies
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?
View 4 Replies
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?
View 2 Replies
So, I was on my way back home driving through the middle of nowhere Utah late at night, when I had an injector tip crack. I was able to identify which one and unplug it so I could get to Grand Junction, CO (about 350 miles away) where I have family. After a power nap I started calling parts stores and found an injector from Advanced Auto Parts (I couldn't find a motorcraft reman, but I was restricted for time). Installed it and all seemed good so I hit the road again. However, nothing changed. It still had the bad miss (rough idle, jerking/bucking when the torque converter locks up) just like when I had the injector unplugged.
The truck is an early 2004 6.0. It's the number 4 injector. I finally got home and hooked up my AE scanner to discover a #4 injector circuit low P0270 code and circuit contribution/balance fault P0272. It's definitely missing because disabling it has no effect. This could be a loose connector at the injector or FICM, because I can't afford another injector right now.
View 14 Replies
I have been having an issue with my 4-5 gear shift under hard acceleration and know that a rebuild is due soon but I was wondering if any high performance kit available with all the clutches and friction discs needed to rebuild.
View 6 Replies
Well, last night I took my F-350 up a wheeling trail. I'd been up quite a few times in my old Rover, so I knew I could go a ways in without damage. Just uphill, muddy, and ruts / rock steps.
One thing I notice is that when you engage low range in the diesel, the transmission starts in 2nd gear. My previous gas Super Duties always started in 1st. I'm assuming this is to protect the transfer case from torque overload. Also, the throttle response seems to change when low is engaged (the pedal becomes less responsive, which is nice).
I've had the gas Super Duties off road before, and all of mine have had the locking rear diff. The diesel lugged along perfectly. My biggest fear was crunching the DPF / SCR / DOC canister on a rock step. In that respect, I'd rather wheel a gas. The manual shift function makes a lot of sense in low range - you can force a start in 1st, 2nd, or 3rd. And prevent meaningless up / down shifts since the grade can change quickly.
These trucks' biggest hindrance is their size. However, if you have the trail room, they are actually excellent off road. Many people look at a Super Duty and see a vehicle good only for pulling or hauling. Not so, these trucks are as good as a Jeep off road, again with trail room being the only concern. The locking rear diff was never really needed, but I engaged and disengaged a few times to keep the mechanism free. I really love this feature.
One thing that happens frequently for me in north-east wheeling is water crossings. Could be a simple brook but mostly it is mud holes encountered on tight trails. In some cases these are only a foot or so deep; in other cases they are 4 feet deep. Ford states to "try" to keep the water below the level of the hubs, which amounts to about 15". Aside from possible front axle contamination, my biggest concern would be the electronics on the diesel which are mounted to the frame or floor pan (transmission module, NOx module, etc.) The gas Super Duties don't have these concerns. In the old days, as long as a diesel had air, the engine would run under water. This engine requires electronic control of many things, including the injectors...so it won't. There are also some axle / transmission breathers which run about floor pan high to be concerned about, but these can be easily extended.
Maybe it's due to the twisty frame which GM loves to insult Ford about, but these trucks have excellent wheel articulation. I'd be surprised if a coil sprung power wagon flexed more, at least in the rear. I'm impressed.
Finally, the traction control. I experimented a bit on a slippery rock step. This was the only step which required the rear locker - sort of. The front wheels climbed the step, but the back flexed to the point of one rear wheel basically almost off the ground and severely unloaded. With 4x4 Low engaged, and traction control "off" as much as Ford will allow, the truck could not pull itself up. Turning traction control on allowed the truck to very nearly pull itself up. A little more throttle / finesse probably would have gotten the truck over, but lots of ETC operation glazes the brakes and spews brake dust everywhere. Being able to start in a higher gear manually really adjusts the torque control. Locking the rear end and the loaded wheel bit right in and she went up and over.
When doing some off-road driving, the "off-road" screen for those of you with the LCD message center is kind of fun and informative to watch. It's nice to see how far your wheels are turned left or right when spinning in ruts or what crazy angle your truck is on. Howie Long could probably document the exact up / down / left / right slope angle a Super Duty needs to be on in order for the tailgate not to open. I never had an reason to open the tailgate while in these crazy angles, of course.
Overall, very impressed. It's not as good as my old Range Rover, but I would say more talented off road than ALL other Ford vehicles except the Raptor.
View 14 Replies
When the truck shifts into 5th gear i instantly feel a constant vibration and noise until it shifts to 6th gear. This happens nearly every time while driving at 40mph. Rpm range 1200 - 2000. I bought the truck new on June 30th and noticed the problem on my way to work on Monday July 2nd. Took it to the dealer on July 5th and the tech said it was the torque converter slipping. I drove it home because they didn't have time to work on it. Took it back on July 12th and the dealer has had it since (currently 30 days) They originally told me it was not the engine or transmission and it was an exhaust problem. Last week they said it was the motor mounts and said they would be done.
View 14 Replies
Ok so I just put an egr delete and a new oil cooler in the truck. Everything went pretty well but when I was going for a test drive I'm not building any boost. I can here the turbo whistle like always but there no power and none of my gauges register boost. Also, the transmission is shifting funny I don't know how else to explain it but just not right. Now I don't see/smell any exhaust leaks and can't hear anything too wierd in that department. I checked the intake and the intercooler tubes I think their called and all good there. However, I did break my map sensor post off my intake during the install . So my map tube was just open to the atmosphere I didn't plug it or anything. Could that be the cause of my woes? Is there any thing I can do to alleviate the issues I'm having with the map? Can I just plug it until I fix it? And is there anything else to check on my turbo?
View 14 Replies
Situation is I have 2016 F350 that when cold, seems to have shift problems between 5th and 6th gear, where the engine revs between the gear shift under light acceleration. Once warmed up, doesn't seem to do it, 4th to 5th might be a little slow or maybe just my imagination.
View 14 Replies
So we have a van with the 6.0. It has a little over 100,000 miles. It has started to take longer to up shift. The dealer ( I know. but I know my service guy and he has done well in the past ) says we need to do injectors and fuel regulator plus a host of small parts to do the job. about 8 grand or so of work. Everything on the trans checks out and is supposed to be in perfect order. Truck goes well once up to speed but its getting the is the problem. So its parked so we don,t melt an injector.
View 3 Replies
I have 2005 f350 will not shift on the fly. With a vacuum pump it will hold vacuum at both hubs but will not lock up. The seals should be good.
View 11 Replies
