I have a e99 7.3. had the transmission rebuilt a couple weeks ago by a local shop. have been getting some hard shifts between 2nd/3rd when lightly accelerating. Took it back already but they couldn't find anything. I am planning on taking it back again but what it is so it gets fixed right. What is causing this or what it might be? Should I be worried about having this shop try and fix this?
View 1 RepliesI rebuilt my 4r100 myself. 1st time I re-installed it, I had no 2nd gear. All other gears worked fine. Drove it less than 2 miles.. slowly..
Took it back out, found i built the Intermediate Clutch wrong. Fixed. At the same time, found a stuck valve in the accumulator VB, Fixed that, at least i think I did. all the valves snapped back under spring pressure.
Put the trans back in, Drove forward, all forward gears work. Drove 10 miles normally, w/ some time spent in all speed ranges. Temps good, outside temp was 73F
M1 = i get good engagement and engine braking
M2 = I get 1st and 2nd, seems normal
OD = Normal shifts, 4th is a little soft, but always was.. TCC lockup good
OD (Cancelled) = Normal 1-2-3, with lockup in 3rd Worked the button multiple times, shifts down, and back up normally.
N = No movement, no creeping.. Normal.. as far as I can tell.
R = No reverse, or is binding in reverse, not sure. worse when up to temp.
P = Normal, no learching or creeping.. No stalling.
The OD light never blinked, so I don't think it is electronic..
Since M1 works and holds with engine braking. L/R clutch and seals are ok. Forward clutch is ok since i have ALL forward gears, No slipping that I can tell. no creeping in Neutral, so the clutches are not fried.. New fluid is still perfect. I'll have to re-pull the pan to see if there is anything on the magnet. I think it could be some stuck valves in the VB also.
I recently purchased a 2000 Expy 5.4 with AWD. The issue is when in Drive it is only in 1st. I can manually shift it to 2nd. If I get it up to 40 and shift it back to drive it just reeves if I am going 30 and do that it throws it back in 1st.
So I searched a lot of the forums, I asked the previous owner some questions. Been 80 to 90k since the last tranny fluid change. Said he tighten the shift cable when it first noticed it was not shifting right and then it started to shift hard (squeal the tires). I ordered a rebuilt valve body assembly, came with plate, solenoid, accumulator and valve body. The supplier indicated this was the fix for my symptoms.
I dropped the pan. A bolt from the solenoid was in the pan. No magnet. The oil smelled more like axle grease, but did not really see signs of metal sludge in the pan or filter. Dropped all the components, yeah that accumulator plate is not for the faint of heart, I found all the rubber fortunately.
I found a couple decent pictures showing where they go in the tranny, the plate pictures were missing to many of the 'other' holes to use that as a guide. I saw a comment to use petroleum jelly to hold in place, I used that trick and it seemed to work. Put everything back together, torqued all the valve body nuts and bolts to 8 ft lbs, figure that is approx. 96 inch lbs and in the 80 -100 recommendation, new filter. Added 8 qts of oil back into the pan.
With it still on the stands started it up and went thru the gears down and up stopping in each one. Set it down and went for a test drive. Same exact behavior. Drive is first, can manually upshift to 2nd, put back in Drive at a slow speed and it goes to first, at a high speed it acts like it is in neutral. What I missed, do I have a clutch problem, or ?????
I have an 01 f250 with a 4r100. Trans has not been slipping at all and yesterday it started a rough shift between 1st and 2nd. (3-4K Rpms) At the same time 4th gear stopped engaging. Shifts out of 3rd but does not go into 4th. I can hit my od button and it will shift back into 3rd and start pulling. Still no slipping just doesn't want to change 1-2 or engage 4th. I have done a full trans fluid change including new filter and tc. Old fluid looked fine with no metal flakes or garbage in it. So all new fluid still same problem. I was thinking of changing my shift solenoid.
View 9 RepliesRecently I have had an issue with my auto which was just rebuilt. About 500 kays after i picked it up it shifts dangerously hard and immediately into all gears at around 20-40 mph, converter also locks immediately. The speed sensor in the box was replaced with the rebuild but I'm having it replaced again this thursday just in case.
Just for the record I cooked it on the beach a while back, the speed sensor was replaced with the rebuild as it was doing the above, the od light also flashes when this occurs, before and after the rebuild.
Prior to cooking it never had an issue.
What could be causing it? I'm starting to worry it cant be fixed, have done a google and tried a couple of things mentioned. Code says wiring issue associated with speed sensor in box.
I bought it 4 years ago with 205K, swapped trans fluid.. 10k miles later (I don't drive it a lot ). I am throwing the code P0750 Shift A malfunction.. i figured id swap the solenoid pack since I am pretty handy and it was affordable.. but it didn't seem to do the trick.. it drove around the block good for 5 minutes before it started shifting weird and throwing a code again.. almost seems to be slipping... I still have to check fluid level again and scan the code again but any suggestions? I have an apt to go to the tranny shop this week and would like to avoid the big bucks if possible.
View 14 RepliesI have a 2004 f250 5.4l w 4r100 and it seams to loose its gear or down shift only when i take a hard right turn. I took it to a trans shop and it shows no codes and at this point I am very confused...
View 9 RepliesProblems with my 2001 F250 4r100 transmission. Transmission will only shift to 2nd gear when throttle is feathered at @2500 rpm. All other gears shift perfectly. This problem is consistent.
View 10 RepliesI have a 4r100 on in a 99 7.3 4x4. The shifting problem I have appears to be intermittant. it seems loose after warm up especially at the 4th shift overdrive and passing gear. possibly due to low presures ? sometimes (lately more often than not) hunts back and forth between 4th and o.d when passing or hill climbing. Under normal driving it shifts somewhat firm with 4th being an exeption.I have changed my crank position sensor filters and fluids which had turned dark and improved slightly. When I pulled the pan and replaced the filter the pan was spotless. No residue or signs of plates or debris. There is about 100,000 miles on the tranny and 350,000 on the truck. Questions: Is there a tcm for this transmission and if so could it cause these problems? I'm considering a purchase of an unlocked 1705 superchip to change the shifting but unsure if this will work for my issues...
View 14 RepliesThis is on my 7.3PSD. I've observed that the 1-2 gear shift drops about 1,000 RPMs and takes a good half second or longer to do so when given a lot of accelerator pedal input. And then the 2-3 shift is a very quick and harsh shift.
If I am accelerating gently the 2-3 shift is as unnoticeable as the 1-2 shift is quick. Is the slow 1-2 shift causing the trans to protect itself and affecting the 2-3 shift? And if so, what do I do to resolve all of this? I changed the trans fluid a week ago and there is no change.
Could my brake issue be related to my transmission problem? Neither are constant. Brake problem= sometimes the brake pedal feels hard, like there's no power brakes (I drove a car once. ..looong time ago. .. that had no power brakes or steering) but it will kick in after a short distance. Transmission prob= seemingly unrelated, is a problem shifting from 1st to 2nd gear. This has happened maybe a 1/2 dozen times, the first time and mostly when in heavy commute traffic and when going between 1st and 2nd gear because of the slow commute speed, but also at other times when not in lengthy slow commutes. When it doesn't shift, the odometer doesn't work (shows only dashes) and an engine light comes on (the sprocket/gear looking one). Usually the transmission will eventually shift and the light goes off.
I read that the brake problem might be a vacuum hose problem? Something about a booster? Is this dangerous? or is it like having a car w/ no power brakes? Going to have my transmission looked at this week. Read on another site about dropping valve seats on this year car. If there's a major transmission problem, I'm wondering if it's worth fixing? I changed, timing belt, water pump, front and rears brakes, tires. 143,000 miles.
I asked a question about the E40D a while back about a hard 1-2 shift. However, I needed to replace the shift lever to get my OD light operational again. I fixed it and the issue seemed to stop for a while, so I just forgot about it. It's back again, last time it did it, it was hard enough to make the whole truck almost buck. It was a real good bang. So, could this be the 1-2 accumulator piston or the bore it resides in?
The next question I had is how long should an E40D take to shift from second to third? I've noticed on a steep onramp with some throttle, mine can have around 2.5-3 seconds of rev before it finally shifts (unloaded). I could of sworn I watched the tach climb a hundred revs or so during this once (real steep onramp), however maybe I was just dreaming, as I've never replicated it. Just wanted some opinion on this, wondering if I need to start putting some funds aside.
The truck has about 139K and the transmission looks to be original. It was used to haul a camper and a boat most of it's life, or at least that's what I was told.
2011 F-150 Scab 5.0L 25k miles. Why my transmission is waiting several seconds after being placed into drive or reverse before it actually slips into gear when first started in the morning and why it has a hard shift between 1st and 2nd than again between 2nd and 3rd and maybe why when it shifts into 2nd and 3rd gear it slips back out than back in?
View 7 RepliesI just recently bought a 95 F150 with a 351. The truck has high mileage, about 190k, and I am not sure how long the transmission has left. It rides smooth down the road, but when I put the truck into reverse it hesitates for a moment then makes a loud clunking sound(as if a door is being slammed) and then jerks into gear. The reverse works great at the moment though. Should I be worried, is there anything I can do to fix this?
View 11 RepliesI'm trying to diagnose a problem with my dad's 93 F250 7.3 diesel 4x4 with a ZF S5-42 5 speed manual transmission. It seems to not want to shift back into gear once the truck has warmed up, with 1st, 2nd and reverse being the toughest gears to get into. We've done a transmission fluid change with the required dextron/mercon substitute but the problem existed before the change and the change didn't seem to solve the problem any.
This problem didn't exist until I did a couple hundred miles of towing with it, some of which was done in 5th gear (overdrive?), so I'm hoping the 5th gear towing didn't ruin the transmission. From a cold start the transmission has no trouble shifting into any gear as well as with the engine off when either warm or cold, but with the engine idling and the truck at operating temperature it can be difficult to impossible to shift into gear, especially reverse.
I think heat has something to do with the problem because the shifts were worse a when its driven longer and during the tow/driving that was done in the last part of summer. It sat most of the time since then but we took it out today to test some things. Hot or cold the external hydraulic slave had roughly the same range of movement, but the drive line seems to jerk more noticeably like power is applied to it during a shift when its warm.
This all makes me think, even though the clutch hydraulic system is working like I think it should, that the clutch is not fully disengaging when at temp. I'm not a transmission guy so before I start throwing parts/labor at a problem.
As it turns out, my shift cable wasn't bad. The transmission lever coming out of the transmission doesn't want to move very easily. When in gear, it shifts fine as it should, so I'm thinking something is bad with the lever. Problem is, I don't know what could possibly be causing it.
View 8 RepliesI have a 05 expedition and when it goes to shift from 2nd to 3rd the engine revs up and shifts hard all other gears shift fine. What can this issue be and is it a easy fix?
View 1 RepliesI have a 2014 screw 4x4 v8 that has been in the shop 5 times now for something that the dealership can't duplicate, and that is intermittent enough for me that I can't determine what the conditions need to be in order to duplicate it myself.
My transmission will shift hard under two different situations:
1) when rolling through a stop, or a momentary stop at a stop sign, the transmission holds up between 3 and 1, and when I bring the rpms up, the transmission shifts down into 1, making a hard clunk;
2) at highway speeds, more so when using cruise, if I accelerate and the truck shifts down from 6 to 4, there will be a hard shift as well. In fact, when I'm on a long stretch of flat, open road using cruise at 70-75, I can feel a slight bump through the steering wheel and floorboard, as if the cruise is trying to engage the throttle a bit more, but only for a split second. But that will happen quite a few times within a couple miles until I come up on a grade and the throttle has to engage for a bit longer to keep speed. Sometimes, the hard shift will do occur going to 5 as well, but 90% of the time it will be a 6-4 shift. If the truck decides to shift from 6-3, there's no issue and it shifts and accelerates like it should.
Again, this is so intermittent, but when it happens, it happens several times. I've had the service tech ride in the truck with me, all the while not being able to duplicate the issue. I understand that these are learning transmissions, so the only thing I can think of is when I try to duplicate it by accelerating over and over, that the transmission adjusts the shift pattern or fluid pressure to compensate.
The truck: 03 Ranger, 2wd, 2.3L, 5spd, 160k mi
I bought the truck two years ago and it's always been difficult to shift (especially into 1st, 2nd, 3rd). I don't drive it often and only put 5k mi on it since I bought it.
The problem: Someone more mechanically inclined than I once told me that the hard shifting is probably due to the clutch not fully releasing due to low hydraulic pressure brought about by a failing slave cylinder.
I just noticed today that there is a high-pitched squeaking coming from somewhere on the truck. At first, I thought it was the rear end, but now, after pulling it into the driveway, I noticed that the squeaking noise vanishes when I push in the clutch pedal and returns after I release the clutch pedal and drive in 1st gear.
The transmission oil level is good, but I've never changed it and I'm not sure if the previous owner ever did either. I'm hoping I haven't damaged the transmission.
After reading a few threads, it seems the problem might be the input shaft bearing. To replace it, I'd need to drop the transmission and borrow a couple of tools I don't have (feeler gauge and bearing puller). If the ISB is the problem, it seems like it would be a good idea to change it now before it seizes and leaves me stranded somewhere.
Starting to develop an issue where the trans will exhibit an extremely hard and abrupt shift every now and then - most only during the first couple hundred yards of driving and I think its the 1-2 shift. Only will happen once and only rarely but its becoming more frequent. I have an '11 5.0L supercab auto 4x4, but my father has a similar truck but with the ecoboost which does the same thing on a MUCH more frequent basis. He has been in numerous times with no resolution so I am loathe to expend the energy on "dealing" with them.
View 12 Replies2000 Ranger 4R44e transmission.Hard shift from 2-3 gear and when i run about 35-40 mph and brake then acelerate it downshifts hard . Whats wrong with it?
View 14 Replies