Ford 6.7L Power Stroke Diesel :: Loud Clunk / Bang When Downshifting Under Load

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.

View 7 Replies

Golf VI R :: Single Popping Sound When Come To A Complete Stop

Did some searching but came up cold. Here's my issue and pardon my ignorance if it is something obvious. Iv got a '12 Golf R and lately when I come to a complete stop I hear 1 single popping sound right before I reach 0 mph. It doesn't happen at any other time that I have noticed. What that could be? Where I can get a replacement Battery Cover?

View 3 Replies

Prius (2004-09) :: Weird Rattling Sound For 30 Seconds During High Load / Low Speeds?

I've noticed, maybe a handful of times in the 5k miles I've owned the car, that the engine will rattle excessively for maybe 30 seconds or so on a drive. This only happens during high load/low speeds and I think after the engine has been off for at least about 10-15 minutes. It doesn't happen on start up, only after the car is warm, but hasn't been using the engine for a bit. I'm thinking this is fuel enrichment (really rough running) because the cat has cooled.

View 6 Replies

Golf/GTI VI :: Single Or Quick Double Pop Sound From Right Rear Area Occasionally

Just installed FK Streetlines..... So everything is very tight in the back, before putting weight on the suspension I went over all the bolts and everything is tight. But I occasionally get a single or quick double pop sound from the right rear area, I can almost feel it in my seat/floor. But it's not frequent and not on smooth or rough roads really I can't find a pattern. Usually turning left and a little side to side undulation... Maybe. I've checked over everything. Car has 500mi. Suspension has 50mi maybe..

View 4 Replies

Golf VI R :: Buzzing Sound Under Light Load In First Gear

Installed the wastegate actuator rod rattle clip on their R? I've been getting a buzzing sound under light load in first gear- very audible when it echos off a wall, etc.

[URL] ....

View 15 Replies

Golf IV R32 :: Rattle Sound Metallic Type Under Load / Acceleration

I've been having a this rattling sound metallic type of rattle when I'm under load, meaning acceleration, on flat or hill side roads, then the sound goes, someone told me it can be the center shaft bearing..

View 6 Replies

Ford Super Duty (1999-2016) :: Overheating At High Speed / High RPM / Under Load

I am having overheating problems at high speed/high rpm/under load. The only codes ive gotten are EGR dpfe (0401). Truck is 99 f250 with the 6.8 new egr valve, dpfe, new coolant, new thermo, new sensor under manifold. I blew 90 lbs air pressure thru the egr lines, big and small, they were clear.

So whats left? I never hear my fan clutch......should I? I've had other trucks and the fan roared when first started for a few seconds, and then again when you were hot...they really roared.

Is it possible for the egr port where it goes into the throttle body to be plugged? guess I should've checked that when I had the egr off. Would an aux. fan be a waste of time?

This is pulling a 3500 lb camper trailer up moderate hills.

View 11 Replies

Prius (Gen 3) :: EV Cancelled Due To High Speed While Doing Single Digits MPH?

I'm a new member learning to use my Prius. I like to use the EV mode in parking lots or to back up from my garage or driveway and avoid running the engine just to warm it up because it warms up quicker and efficiently while driving with engine on (gently of course).

I had a few times when EV was cancelled due to "too high speed" and engine started while I was creeping at very slow speeds (<10 MPH). Today it happened twice. First when I was slowly driving in a flat parking lot of DOR where I got my new Prius plates and later it happened when I was slowly exiting from a parking garage DOWNHILL while braking and regenerating. The battery was almost full all the times it happened (so far it stays almost full all times). The driving distances were very short, like couple of hundreds of feet the most.

I can understand why that would happen while driving uphill (I had that too), but flat or downhill at 10 MPH or less?

I don't think the speed sensor is bad, because I also had EV canceled a few times exactly at 25 MPH and that is normal.

Other than that the EV is great. My house is at the lowest point of the subdivision and if I watch my speed carefully (<25 MPH, incidentally a speed limit) I can go entire mile back home in EV and charge the battery to full state in the process by regenerative braking. By doing my average MPH jumped from 50 to 52 and I just started doing it.

View 7 Replies

Ford F-150 :: 2001 - Loud Bang Sound Like A Shotgun Going Off On Highway

2001 Ford F-150 Supercrew Lariat 4x4

I was driving last winter when something bad happened. I was on the highway in 4H doing about 45mph (Really bad weather). Suddenly there was a loud bang, like a shotgun going off. The truck continued to run but it sounded like someone was beating my driveshaft with a metal pipe. There is no apparent damage but it grinds and bangs when it drives. The engine runs just fine. I limped it back home with the noises being constant only when its moving.

View 8 Replies

Santa Fe (DM - 2013+) :: Seat Belt Light On And Annoying Sound After Unbuckling With Bang

adjust the electrically adjustable seat to her position. Since that is quite further forward than my programmed position the seatbelt was quickly choking her. So before I knew (I was sitting next to her) she unbuckled, with a bang.The bang was because there was quite a lot of pressure on the seatbelt.

No harm, nothing broken, at least ... until I heard the ping ping ping sound even though both of our seatbelts were in their sockets or whatever you call them. Inserting again, no change. Still the 'seatbelt light' on + the annoying sound.

Should I try to open the seatbelt socket/block/the thing where you insert your seatbelt in and see if there is some broken wire inside ?

View 2 Replies

Prius (Gen 3) :: Single Click Sound When Accelerating Off The Line Or Brakes Pressed

My 2010 with 110k is now making a single yet audible "click" sound when I accelerate off of the line. It makes the same exact sound each time I press the brake pedal at speed. Just one click, not a continuous clicking. What's wrong??

View 5 Replies

Golf/GTI VI :: Clutch Would Slip And Then Bang While Engaging After Raining

Today I parked my golf on the street and it was raining, when I came back to the car after four hours the street had flooded and water was about an inch below the bottom of the door on the driver side, and about an inch (or more) on the passenger side and up to the bottom of the exhaust pipes in the back.

The car started fine, but when I began to drive it the clutch would slip and then bang while engaging. Once I had taken off a few times gently everything smoothed out. Car drives fine and the engine bay was dry when I got home (a 40 minute highway drive). NO water got inside the car at all, so the interior was completely dry, every thing appeared to function perfectly. My question is, assuming just the bottom of the motor, trans, and undercarriage got wet is there anything I should be weary of? Any sensors or electrical things down there? Lights, ac, door locks, everything is working and running fine and dry at this point.

View 3 Replies

Prius (2004-09) :: Single Metallic Click Sound When Turn Steering Wheel A Little Over 90 Degrees

I've been noticing this one single "metallic" click sound a few months ago, it happens whenever I turn the steering wheel a little over 90 degrees.

The steering intermediate shaft recall has been done summer of last year. I'm not sure if that has anything to do with this sound I'm hearing.

This is a video I made

If you watch this video, you need to turn it up really loud to hear the faint click sound every time I turn the steering wheel past 90 degrees.

View 2 Replies

Grand AM :: RPM Jumping Under High Engine Load

I am trying to get this car of mine into tip top shape (2000 Pontiac Grand Am SE). Ive been experiencing this problem where the rpms will jump while the engine is under a high load. If i apply more throttle, the problem goes away.(as shown in the video)

In the youtube video below, I am going up a 5% grade. This will happen at slower speeds, but i will need a significantly steeper grade of around 25-30% ...

[URL] ....

View 5 Replies

Golf/GTI VI :: 2011 - High Air Pressure Sound At 1500 RPM

I purchased a 2011 GTI on Tuesday. Loving it so far. I've got a question about a noise I hear though. It is at 1500 rpm. It sounds like high pressure air, kind of a pshhhhh sound (like letting air out of a tire). It isn't loud and there's no impact on performance. I assume this is just the turbo spooling up or something related to that? This is my first car with a turbo so just want to be sure .

View 3 Replies

Golf/GTI VI :: 2012 - Ticking High Pitched Sound?

I just got my MKVI late January, and it currently has 3k miles on it. 2DR CSG.

Almost everyday in the mornings when I drive my car to work, there is this high pitch ticking/clacking sound coming from the passenger side vent/dash/A Pillar area.

It only happens over dumps on uneven surfaces or when I launch from a stop/red light. Keep in mind I have a manual. Its a rapid ticking/clacking sound that goes with the uneven surface or any sort of vibration on the road.

It usually goes away maybe after 20 mins of driving (I'm thinking it has to do with the temperature warming up). Or if its sunny out, it just magically goes away.

I've brought it to the dealer at least 3 times with no cure, because it takes me at least 20 minutes to get there. The tech would literally have to come to my house in the morning and listen while i start the car up and drive to "duplicate" the sound.

I originally thought it was static coming out of the right speaker due to bad wiring. Had the right speaker replaced already, sound is still there.

View 17 Replies

Ford Super Duty (1999-2016) :: Single Clunk Sound On Occasion When Accelerating From A Stop Sign?

2012 f250 SC xl 6.2 - Is it normal to hear a single clunk sound on occasion when accelerating from a stop sign? Doesn't happen all the time mind you and I don't ever remember hearing it in the past.

Now just today, while backing up my driveway, as soon as I started the reverse motion, I heard the same clunk. Sounds like metal to metal and comes from the rear of the truck.

Only 7000 miles on her and I treat her like a baby...anything I should be concerned with?

View 7 Replies

Golf IV R32 :: High Pitched Whistling Sound When Car Running At Idle

High pitched noise when car is running at idle and when not on the gas. Whenever I accelerate it goes away. Pitch/Loudness seems to be higher with RPM's. Could be coming from front of the car.

Checked so far:

I read some other posts about this and fully disconnected my aftermarket radio. I'm pretty sure it is not a ground loop as no power to HU shouldn't still create the whistle.

What I have:

I have an EIP aftermarket street exhaust. I checked the exhaust to see about the flapper, but I don't believe I have any of the items involved - maybe I'm wrong. After some more reading it sounds like a vacuum leak as it goes away upon acceleration. I need identifying what vacuum hoses are still in place/clamped off with having an aftermarket exhaust.

I do not have a CAI, just a K&N drop in.

View 4 Replies

Golf IV R32 :: Whine Sound When Press The Clutch To Shift At High RPM

My R is stock. When I accelerate hard and shift, I can hear like a whine noise when I press the clutch to shift.

Its like something continue to spin fast when I press the clutch at high rpm.

View 1 Replies