Ford Transmission :: 2004 F150 - Clunk Or Bang When Tip Into The Throttle And TC Unlocks
Jan 4, 2017
So have an '04 F150, 5.4l truck in the shop that has a nice clunk or bang when you tip into the throttle and the TC unlocks. Smooth as glass when you back out of it and the TCC locks back up, no shudder on lockup, nothing. No codes in the PCM, no nothing. Drives well, fuel trims are good. Truck has about 178k on it. Acts like it has an idle misfire, but you don't see it anywhere in the fuel trims or misfire data or anything else. Should I just put a converter in it? Or maybe reprogram the PCM first?
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96 F150 carbed 300 with a C6/208 SAS44/9" with 3.55 on 35s.
I put a transgo shift kit in the transmission before putting it in the truck, it also has a small stall. At half throttle you can manually shift 1-2-3 with no issue at all. Under full throttle when you shift to second it won't go into second until you push the shifter into third. Then it'll go to second and spin the tires when it grabs second in dirt. This is all in 4lo, I was gonna switch to 2hi and try it but it's raining and I don't feel like crawling under it to change it. The truck is a mud toy so will spend 90% of its time in 4lo.
I don't have a vacuum line currently hooked to the transmission because I have the same shiftkit (transgo) in my 77 and no vacuum line on it either and it works fine.
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Truck is 04 supercrew with 5.4 and 140,000 miles. I have the typical shutter when cruising 55 - 60 and just ease on the throttle to pass someone. I chalked that up to the torque converter unlocking, if I punch it instead of easing into it, it will not shutter. As of yesterday, it acts like the converter is going to full lock up almost immediately. It will bang when it shifts and rpm's drop to lock up range. A few times it has killed the engine when I shift into D. No codes at all, I removed the programmer and installed the stock tune, no change, unhooked battery, no change, fluid is good, and twice after leaving stop signs it worked perfect until the next stop. I believe that it is an electrical control problem.
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38k and 15 months old. Runs fine except...
Can be in cruise or not, tow/haul or not, but need to be pulling a decent hill with 7k+ trailer. Running level with air bags. Regardless of speed, cruising at 50, 58, or 65, beginning incline and turbo boost builds normally to maintain speed to the point when it needs to downshift. BAM!!, not just a clunk, 90% of the time- scares the hell out of me. I can make it do it on an incline empty, but it it difficult. If because initial speed is 50ish, a second downshift to 4th may be needed. A bang only 50% of the time.
No codes.
Regardless of the degree incline, (toughest in the NC/KY areas is 6-7% grade, can avoid harsh shift by backing off on throttle and manually downshifting to 5th or 4th, depending upon speed.
Can "make" it do it on level terrain with 7k trailer if I slowly back off throttle and slow from 65 to 50 or so and punch it, but not too hard. Too hard and it goes to 4th, usually with just a modest clunk. Just right and I get 5th with a loud, and I mean loud BAM. Even the tech was impressed.
Afraid to hook up my 17k 5er and take off for the next 3 months, which is the reason I bought the truck to replace my 11...
Carrier bearing has grease coming out of it (400k on various duallies and never seen this), but dealer says not an issue.
Ford told dealer that it had no idea, and advised tech to do a lot of pin point electrical testing and everything checks out. Next stop is the inner workings of transmission.
I have been without it and work for 3 days because of backlog. Running two day load tomorrow, then back in for tranny work.
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2005 V8 Phaeton,82,000 miles.
If I ease on the brakes ,no problem but if I hit the pedal there is a loud bang or clunk from underneath,sometimes front and sometimes in the back. It's as if the wheels stopped but the chassis went forward and back slightly. As long as I put the brakes on gradually there is no problem stopping.
When I come off the Interstate and leave the off ramp, the low side of the front end sounds as if there is no shock absorber ,doesn't matter which side is low,they both do it on the low side.
Intermittent problems.
Steering wheel turns and grinding,groaning noises from under the hood, not all the time.
Going over a speed bump in a parking lot causes the same noise I get exiting the Interstate.
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I have an 05 F 250 super duty with the Triton in it. When I shift either into overdrive or reverse the transmission hesitates (does not go into either gear for about 5 to 10 seconds). After that it engages and it's fine. It does not appear to be slipping or acting up regardless of temperature or speed. Sometimes it will sort of engage and than bang into gear solid. I do not have any check engine lights. Not sure if the PCM has any codes. So I'm trying to figure out if I need to have a complete rebuild or if I have a valve / solenoid body problem Where do I start?
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I have a 2004 F150 XLT SCAB 5.4L 3v Fuel that I drive Daily, it has 280,000 miles on it. While driving to work (70mph) my throttle became unresponsive and it felt like the transmission was downshifting. Made my way to the edge of the highway and placed truck into Neutral, then the engine quit. Tried restarting at which point would not fire. After letting the truck sit (while waiting for a tow) I decided to try to start it. The Truck did start and ran for only about 2 minutes and then quit. The Tow truck finally arrived and I tried to start again with the same problem occurring, stated and ran for about 2 minutes (no throttle response) and died.
Got the truck home and decided to remove the Fuel line from the filter to see if there was fuel flowing, which there was none and no pressure. Replaced the FPDM with a new one, old unit was corroded but not cracked (replaced it once before). Tried to start and would only crank with out any fuel flowing (still had it removed from the filter). Thinking it may be the Fuel Pump but have to drain the tank being that I just filled it this morning before it died. The problem is, how to drain the tank before lowering it if the Fuel Pump is not running??? What the Problem is or how to test Fuel Pump or drain the Tank?
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I picked up a 90 f150 with the 302. it wont idle without a little throttle, so after a quick look under the hood i noticed alot of broken torn and missing vacuum lines. Where I can get some sort of diagram for routing?
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I have been fixing up my 77 F150 since I got it in January and it's really starting to look nice! I love this truck, but I have noticed a clunk sound when I put it in reverse and also a same if not similar sound when I'm driving and slow down. It makes a clunk sound when it shifts to a lower gear, (automatic). Now, I was thinking it was a U joint at some point and crawled under there and started to grab them and see if there was any play in any of the spots but found no play. I checked it a few times, thinking well it could be just the point the U joint stopped and that would explain no play but after a few times of crawling under I still never found any.
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I have a 2000 F150 5.4L with 157k miles on it. I think it has the 4r70w trans. The transmission has started holding 2nd gear too long before shifting into third. Throttle position doesn't matter, it does it even under light throttle. I do not have a check engine light. I have owned the truck since new and the trans fluid has been changed 3 or 4 times. The fluid looks pretty good now, not burnt or anything. The truck has been sitting in the garage a lot over the past 2 years, I drive it at least once a month and have put maybe 2000 miles on it this year. It shifts fine through the other gears, just 2-3 has an issue. Truck has the towing package.
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Ive got a 2013 Accent with 16,000km on it. It has an automatic transmission. The noise is when i pass from R to D, or P to D. It is an intermittent noise, so it does not do it all the time. But when it does, it makes a loud "bang" that can be easily heard and felt in the floor. Ive had it checked by the dealer, but it never does it when its in the shop.
I always let the idle go down before shifting into gear and even if i hold the brake hard to change gears it does it anyway. It doesnt matter if the trans is cold or hot. And no, i never change gears when the car is still rolling, always when i have stopped completely.
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I have a 1987 ford f150 with a EFI throttle bodied 5.0L (302), and I have taken it to a mechanic multiple times because for one it has a dead spot in the throttle and it dies when you let off the gas at a stop light or sign. But the mechanic said he checked everything he knew to check and found nothing wrong with it. I also had my cousin read the computer previous to this and we couldn't pull the codes from it.
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I have had my 2007 GX for 5 months now. I have discovered the "clunk" issue and had the dealership replace the driveshaft. I want to start a new thread because I have a different clunk. The new driveshaft has fixed my clunk issue at a stop but I have one more. While driving in the city or leaving the highway on the exit ramp (transmission is in overdrive) and I press the accelerator I get a clunk.
This only happens when the transmission is shifting out of overdrive. I can repeat this clunk while driving around 30-40 mph. I will coast a bit then accelerate enough that it wants to shift out of overdrive and then "clunk". It sounds loud but not much of a jerk. I have 85K on it and did not perform any fluid changes in the drive train yet. Transmission is sealed so not sure if it is worth changing or just leave it and drive nice so it don't clunk.
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I am having a very intermittent thump/bang/slip in my front end when coming off the highway or taking off at a stop. Believe it or not this is when i drive the car perfectly normal and don't stomp on it which I haven't done much with this car.
I was under the car the other day and noticed neither the dogbone mount bolts looked to have been replaced and i saw the back subframe bolts look to be moving around due to rubbing marks on the subframe.
Car has been in three times to seacoast volkswagen this last time the tech drove with me and they wont do anything because they cant replicate the problem.
I noticed its between 4 to 3rd down shift and 1st to 2nd up shift that it happens so far. It is LOUD and extremely noticeable and feels almost like a slip and heavy bang.
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Last year I did some major work on my 02. Painted it, new injectors, 38R, and once it was back together, the transmission went south in a month. Got a Ford reman HD4R100. Shortly after the install, when in reverse, the torque convertor would lock up when you stepped on the throttle. As soon as you let off the throttle, it would disengage. Thinking it was a tranny issue, got another one from Ford. This one has been in the truck for about 9 months. And it seemed fine until about a month ago. It started doing the torque convertor lockup thing in reverse like the last one, but not as often.
Then last weekend it did it every time I put it in reverse. Then yesterday, while pulling away from a traffic light, there was a loud bang, and lost power in the transmission. Once stopped, I found out it has manual 1st and 2nd, but nothing else. No drive, overdrive, or reverse. I personally believe something electrical led to these issues, and ultimately, the transmission failure. I know the truck is not stock, but I do not run it hard very much. When it went bang yesterday, I was not being hard on it. Where to look at what is causing this?
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Just a hour ago, driving along about 45, then I hear a loud bang and my truck quits. I get off the road and it won't even turn over. I had a friend tow it back to the barracks and put a socket and breaker bar on the crank and can't move it. All the fluids are fine. Possible seized up? The thing was running great as always then boom. Nothing! It's a 06' F150, 5.4, 97K on it.
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I have a '06 Mercury Mountaineer, right over 100,000 miles. For the past few months the car has started to make a sound and even produce an "clunk" that I can feel when I am slowing down to come to a stop. It only happens when I slow down to around 3-4mph or slower. The transmission has only around 10,000 miles on it. What could be causing this?
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i was driving home and i heard a loud bang, next thing i noticed was the window fell all the way down and wont come back up. I hear a slight clicking sound when i press the window button, but nothing happens...maybe a broken regulater???? how much do these cost? can i fix it on my own?
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When approaching the car from any direction, if I am within a couple of feet of a door, the door automatically unlocks. It's wicked cool and I love that it does this but....I don't think it's supposed to.
I only have the only FOB that works (I have another but either the battery is dead or the fob is dead) so I can't test to see if it does it with both.
,I looked through the owners manual, and searched Google but I don't see anything saying this is something that is supposed to happen. The doors don't lock automatically, and if I press the door button to lock the car it doesn't unlock again. It only seems to unlock if I walk up to it locked and stand there for a few seconds.
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Posting this because I saw many other owners with the same problem. Basically after warming up DSG every time clunk into 6th gear on light throttle and D mode, speed around 50kmh rpm around 1400.
You can hear it and feel it on pedal a little. Sometimes is not so harsh sometimes its big clunk. Of course it did on manual mode too if you try shift in the same position.
Original thread here: [URL] ....
Its well known that DSG D mode is set to shift early for better fuel economy but this is not good and really annoying.
I have same problem and its not mechatronic related mine was replaced do to jerkiness on 2 gear and clunking into 6th it is the same.
So I know that fix could be DSG tune/reprogram that many company offer. D mode is optimized and shifting moved to "normal" rpms. A lot of you don't have even problem because your its already flashed with combo etc.
But in my area no body offer DSG tune and i really don't know how to solve this problem... don't want to replace whole gearbox because in all other ways works ok.
I have 2012 MU with i think lastest SW and it didnt change anything on this.
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Got an odd clunk, feels like rear off throttle from hard acceleration. Feels like diff bushings might be worn. Looking for some info about diff bushings and how they feel. Also found the front prop shaft coupler looks like its seen much better days so ill be replacing that.
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