Ford 6.0L Power Stroke Diesel :: Torque Converter Shudder When Hitting The Brakes
Nov 28, 2016
I've done the testing of hitting the brakes when the TC is locked and when it's off the shudder disappears. My question is I recently had a trans flush and both internal and external filters replaced. There was a hint of noise before then but it seems it's getting progressively worse. Could it be that they used the incorrect trans fluid? Reading through it seems as if I should follow the steps of dropping the pan and looking for signs and symptoms and then replace with the correct mercon fluid (if that's not already what's there). Then maybe some additives like shudder fix? I just want to make sure I take the correct steps to solve the problem as to not break the bank getting a new TC put in and missed something cheap and easy. Also reading it could be motor related maybe a misfire so just looking for pinpoint the problem.
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Anything besides a worn out Torque Converter clutch that might cause the incredible amount of shaking when the transmission tries to lock the TC?
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With my first tow under my belt from this weekend in my new-to-me truck, I quickly learned that my TC shutters in 5th if I hold fuel down enough to bog the truck before it wants to down shift. The shutters are pretty violent as compared to others I've experienced in Explorers and F150s. When do you know it is time to change it out? Or, is there something else I can or should do before changing it?
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Before taking to Ford or random trans shop just yet, looking for diagnosis recommendations (or an item or two to replace DIY). Torque converter bolts are broken or TC itself? Solenoid (but would expect a code)?
Issue: Doing 45MPH at the tail end of the 6hr drive, then engine simply revved and coasted to stop. No lurch, pop, noise felt like a manual transmission popped out of gear and into neutral. When the shift to R/D/L/4x4 hi/lo, can feel transmission engage. Engine revs and 'slips' are the best way to describe (no abnormal noise otherwise)I can feel it applying a very slight load (doesn't move, but can feel it try). No warnings/issues leading up to this in the 6yrs and 100k miles I have owned (has 174k miles now). No leaks/visible issues underneath.
Fluid is not burnt, the level is ok. Replaced (no flush) Mercon SP fluid at 125k when bulletproofing. No codes, including hard codes. Trans temp was 165 before/after, which is normal. All engine temps/values on Scanguage normal. SCT tune since bulletproof (though don't abuses it), set back to stock. Also disconnected pos/neg and touched both sets of cables together for several mins.
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Ok so here is my problem now. I'm sure its in the tramny but not sure what else. My shift from 3-5 has always been a little hard. Yesterday on my way to work I noticed shifts 1 thru 3 were hitting hard. Once I got up to 65 mph it was okay. Then pulling into work when I shifted to reverse it didn't go into gear right away and then it would hit into gear. Later that evening on my way home from work it was shifting the same but seemed worse. Then my tow/haul light started flashing and it seemed like the torque convertor wouldn't lock in. It would just stay in 5th gear and the more throttle I gave it the rpms would go up but I would only get a little response from it. Then a few miles down the road it just completely shut off on me. It will not even try to turn over. I could also hear a noise coming from underneath the truck. Something ive never heard before. I really need to figure this out
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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.
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Been doing a lot of reading about shudder/vibration on the 2011+ F150's and it seems to all center around the two piece driveshaft found on the longer wheelbases and more during take-off than other times. I have an '11 5.0L 4x4/auto with the 145 wheelbase and the 1-piece aluminum driveshaft and am experiencing a shudder in 3rd gear primarily, most noticeable during light acceleration with medium load (like gently accelerating up a slight incline).
When this is occurring I can see the tach needle fluctuating just slightly (maybe 50-150rpms, just barely bouncing) but I have no check engine light and the only time I have take-off shudder is under hard acceleration which feels like axle hop (which isn't too rare on soft leaf springs with 360hp engines!).
Anyways, this 3rd gear shudder is very soft and nobody has noticed it that has rode in the truck with me, but it sure feels like the old AODE/4R70W trans would when the fluid was getting old and the TC started to shudder during "soft" lock. 5.0L? Certainly could be a miss, though power is good, mileage is great and no CEL is lit...
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Switch out a 5.4 in a F-250 4X4 4 my neighbor now I have a noise like fan blades hitting coming from the torque converter it goes and comes and hits good in reverse...
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I am having a minor problem with my 05 F150 Lariat. Under light acceleration going up a slight grade the truck sometimes shudders (vibrates?). If I let off the gas or accelerate slightly it stops. At first I thought it was a feedback loop with the electronic throttle so I had the dealer reflash the computer but that didn't fix it. I've noticed that it happens right about the time the torque converter locks (looking at the tach) and I'm sure it has something to do with torque converter locking up and then disengaging continuously. Funny thing, it seems to happen frequently on the same hill at the same speed. What was done to fix it?
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So my transmission drove perfectly fine I just wanted to put an upgraded torque converter in especially after driving a customers' truck with a low stall converter. I know their not like for racing or anything but it's a work Truck with some mods to the motor nothing crazy. So I went ahead and bought a low stall triple disk converter and I drove around the block fine and went to go on the freeway and got into fourth but lost it as I hit 75 (was not flooring by any means and had it in the stock tune) now it will not go past second gear. Once it did this the o/d off light started to flash and I decided to do a stall test.went to 1800 in a Second. Suppose to stall around 1200-1300.
2000 f250 7.3 powerstroke dp chip stage 1 camshaft and 180/100 injectors coming at some point but stock for now
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1999 7.3/4r100 4wd with the rattling torque converter.
I bought this truck 10-11 years ago to use as a tow rig for my landscaping company. It has been a great problem free truck, I have done brakes a few times, a water pump, ball joints but no issues with motor/drivetrain.
I don't know the history of the trans before I purchased. Ford didn't have history of it being replaced and even now it still has all the labeling on the case. I would have thought it would have been washed off in a rebuild. Again I don't know. When I bought the truck it shifted nice and crisp, having owned trucks before it made me think it had been rebuilt but this was my first and only 4r100. Other trucks are ZF6 manuals.
Anyway 10 years and 100,000 miles later it still shifts very crisp and fluid, has been changed a couple times, is nice and cherry red. I added a 6.0 cooler, temp gauge and filter. Never see the temp rise and haven't seen much in the filter.
About 25,000 miles ago the TC started to rattle, a known 99 problem. I figured surely the trans would go and I would do a rebuilt from Ford. It keeps going though so being a work truck I have kept running it.
A couple weeks ago the starter just spun and wouldn't engage. I pulled the inspection cover and noticed some missing teeth on flex plate. Got it to start my turning crank bolt a bit to good teeth and the starter caught. Now we are carrying a breaker bar and socket. It has happened a few more times so I need to replace flex plate.
Question is, since I need to pull trans to replace flexplate, should I replace TC (I would like to get rid of the noise)? Some people have said I will be replacing trans in a couple months if I mess with it. They say just spend $3000 on a rebuilt now with a converter. Not trying to be cheap but hate to just dump this trans that is still working great and has served me well.
I have replaced many transmission and done clutches in many trucks so I am familiar with the steps of removal and installation, just stuck on what I should do.
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My daughter, after turning 16, has claimed our '07 with 170K as her own. Both my wife and daughter have been complaining that the car shudders when hitting the brakes.
For background, last fall, they heard a loud scraping noise coming from the front wheels, I decided that after 155K, it was time for a brake job. I pulled off the wheels and proceeded to swap the pads and rotors to discover that the scraping noise was coming from a rock caught between the hub and dust shield. Didn't really think about it prior to doing this, but this is a different beast when it comes to brakes and the pads still had plenty of life left on them. The piston on the right caliper refused to go back in to allow space for the new pads, so that needed to be replaced. Quite the frustrating job.
The brakes had been fine up until a month ago or so. I took it out for a test drive, but only detected a "shudder" when braking through about 20 mph. I didn't detect any pull in the brakes and the stopping power seems fine. They seem to experience something different than I do.
I plan on pulling the wheels off and having a closer look when our schedules allow. Is there anything in specific I should look for? The mechanical brakes kick in under 10 mph, correct? If the shuddering is happening above this speed, what in the regen braking system could cause this?
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When I'm at 60 mph and go full throttle, it doesn't seem to down shift enough and the torque seems low. But when I go 1/2-3/4 throttle, I get the power I'm looking for. I'll test it later today and see what gear it shifts to with both.
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I bought a 2001 Beetle with a 1.9 TDI Diesel engine, automatic transmission 200K miles. When sitting at a stoplight or even when just starting out in the morning the transmission won't engage. I have to bring the engine up to about 1600 RPM's then with a clunk it goes. After that it shifts fine. It even down shifts nicely when going up a hill. Now, if I am on the freeway with it and want to pass another car, it will unlock again and slip if I get on it to hard. It then will lock back in and go. Checked the transmission fluid and its full. (I still can't believe that can't put a stupid dip stick in new cars) I am trying to do all the possible cheap fixes first in hopes that it could be something easier then replacing the transmission.
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I just bought my first truck and it is a 1999 (Made in late 1998) F250 7.3 Super Duty it is 2WD with rear ABS and has 290k miles on it.
It has what seems to be the common brake shudder while stopping. I know the only solution is to replace the rotors and I have been looking all over the forums and internet and just don't know what to go with.
I'll be using the truck to do light farm work, pickup lumber, get a bed load of dirt and maybe pull a normal car trailer every now and then.
I'm wanting to get something that will prove to be trouble free long term and be good enough for what I need with out over paying for something that I will never fully utilize. I have looked at
R1 Concepts
Frozen Rotor
EBC - which doesn't have 2wd front rotors
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Looking for a used catalytic converter that is bad ? I want to hollow it out. I have a couple of these trucks so I thought about just hollowing one and swapping it back and forth for smog testing but my luck i will hollow the one that is going to fail next year.
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I tried searching here for a pid to get oil pressure. Can't find it. Is it possible to get oil pressure readings on these motors? I assumed it would be because we have a dummy oil pressure gauge on the dash. I thought it would be in the pop up list of gauges on Torque but I didn't see it.
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So I got a new tranny about a month ago. Everything works flawlessly. Until today.... Going up hills even small ones feels like I'm towing a house. No torque felling. In 3rd and 4th gear (automatic) it gains boost really fast and peaks at 28 lbs. and coasting downhill it slows itself down. I can go from 60 to 40 without braking in a half mile stretch. I fist noticed something was different when I started to drive home tonight; it makes a sort of whining or howling noise. I can't quite pinpoint where it's coming from. I'm tired of this truck but love it at the same time.
2003 125k miles New tranny New injectors New oil cooler and egr cooler Possible bad HPOP
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I am installing Torque Pro and Car Gauge Pro on my Yellow Submarine. To keep an eye on things. Well installing it on my tablet, and installing that in my Yellow Sub. I already have the Bluetooth dongle. What to set up, what to monitor, what to test? Etc..... I want to continuously monitor this truck while driving it. Being it went swimming.
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On my way into work this morning I had one of those everybody needs to stop NOW moments. Hit the brakes hard, really hard with wheels chirping and all, after i got mostly slowed down the pedal gave way and went to the floor. I let up and pushed again and they were fine, but at that point I didn't need to hit them that hard again. The rest of the way in they worked fine braking normally, and before hand as well.
I'm thinking the master cylinder is going bad. Any tips on diagnosing for sure?
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Was trying to give back to FTE, all have been useful. So I figure I would post a problem solver. Had a nice oil leak traced to cam sensor o ring. All back together now crank no start.
Truck is half in and out of the garage, torque pro isn't pulling any codes. I did accidentally pull my alternator cable out of the connector, luckily had one to replace.
Did I wreck the sensor taking it out? Will have to try and pull the beast out tonight.
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