Ford 7.3L Power Stroke (1999-2003) :: Clunk / Vibration When Traveling At Highway Speeds

I'm a mechanic but work only on cars so I'm a little shy on diagnosing trucks. I have a 2001 7.3 f250 4x4 short bed, when I give it gas I can hear a clunk, when I let off of the gas I also hear a clunk. Also when traveling at high way speeds I can feel a strong vibration when I very lightly give it gas but the vibration goes away as I give it more gas.

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Sonata NF (2006-10) :: Sputtering At Highway Speeds

My vehicle works absolutely beautifully except between 75 and 105 km/hr where I experience sputtering. This does not happen under load but just when I am maintaining a constant speed. It feels like misfires but I don't get a check engine light when it occurs. Misfires would definitely trigger the check engine light. I've tried the obvious solutions:

Used fuel system cleaner in case I got a bad tank of gas
Used fuel additive to eliminate any water in the tank
Changed the oil and filter (it was due anyway)
Replaced the air filter (it was also due)
Cleaned the MAF Sensor
Replaced the spark plugs

None of this has made any appreciable difference in the performance of the vehicle. The sputtering persists.

The car does not have traditional spark plug wires. Instead it has ignition coils which run about $140 each from the dealership. I may eventually have to change one or more coils but I'll try cheaper solutions first.

My next step is to replace the crankshaft position sensor. You may have noticed that I am problem solving starting with the least expensive solution and progressing to more expensive repairs.

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Sonata NF (2006-10) :: High-pitch Whine At Highway Speeds

When I'm driving at a certain speed (usually between 65-70 mph), my 06 Sonata GLS V6 develops a really soft (but really annoying) high-pitched whine that decreases when you take your foot off the gas. Not much at other speeds (sometimes it will kick in real quick at high rpm before the automatic trans shifts), but when the car hits 66-67 mph that little subtle whine kicks in. By 75 mph, it's gone (I drive 75+). Sounds just like a high-pitched dog whistle.

Not a wind noise....sometimes it sounds like it comes from below me, sometimes it sounds like it's coming from the dash. Dealer don't hear anything (of course), even when I'm in the car with the tech and can hear it (maybe I'm part dog.....who knows).

Here's my guess.......I think that it's the electric fuel pump. Sometimes if I'm outside the car, I'll hear a whine back in the fuel area that is almost the same pitch as the whine I hear at 70. Since the whine varies (or disappears) with engine rpm and application of the gas pedal, my thought is that I'm hearing the fuel pump hit a certain pitch, which causes the whine.

2006 Sonata?

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Sonata NF (2006-10) :: High Pitched Squeal At Highway Speeds

I have been hearing an intermittent high pitched squeal at 50 MPH and higher. Taking my foot off the gas or taking it out of gear doesn't change the noise. Hitting a bump or tapping the brakes makes it stop momentarily. It sounds like it is coming from the front driver side, though it's hard to tell.

I have about 33,000 miles on the car. My manual says that the brake pad replacement indicator should squeal when the brakes are applied.

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Sonata NF (2006-10) :: Steering Wheel Sticks At Highway Speeds

This has happened multiple times but this last time was the dangerous one. I was driving home from work on Friday on the tollway which is very straight but does have some slight turns in it (construction). So I am at highway speeds for some time and one of these slight turns comes up. I try to turn my wheel but nothing happens. I apply more and more force until it finally decides to turn and by that time I am applying so much force, it jerks really hard. If the car didn't finally decide to turn, I would have hit the highway barrier. I am lucky that no one was next to me or I might have hit them.

-This only happens at sustained highway speeds, city driving is perfect.
-It doesn't happen every time I am on the highway, it is intermittent.
-It does not have a bias with regard to direction (left turn or right).
-I have put some Mobil 1 Synthetic ATF in my reservoir to add fluid to my system with whatever was currently in there when I bought the car @ 75K miles. Car currently has 130K miles. Is there some sort of write up for PS maintenance/flush? I need to pull the return to drain, right?
-I do have a rubber on rubber squeak sound in the front right when I go over a bump.

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Sonata NF (2006-10) :: 2007 - Brakes Pulsating (when Applied) At Highway Speeds

I recently bought a 2007 Sonata V6, and the brakes pulsate (when applied) at highway speeds, so I am looking to replace the front rotors & pads. I have been told that the OEM rotors/pads aren't great & that as a result many owners have a brake pulsating/vibration issue.

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Sonata NF (2006-10) :: Wind Noise In 2 Front Windows When Driving On Highway Speeds

I have a lot of wind noise in my 2 front windows when driving highway speeds, no water leaks. I cannot find where it is coming from either, I assume it is either air rushing over the mirrors or thin glass. Sometimes it is worse than others, not sure if cross winds etc. Is that common in 2009 Sonata. My old 2003 Malibu, much quieter but mirrors were slightly more rounded if I remember.

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Sonata NF (2006-10) :: Dash Lights Shorting Out

Seems like every time I drive my car at night when it's raining, my dash lights flicker some and then turn off completely. The exterior lights stay on, just the dash lights turn off.

When this occurs, I typically hit the top of the cluster w/ my hand and the lights come back on. Then I adjust the illumination setting and it goes back to normal. (I used to have to do the same thing on my old 1991 Jetta). So obviously there is a short somewhere.

It's not a big problem, it just gets annoying having to hit my car for being bad.

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Sonata NF (2006-10) :: Dash Lights Won't Turn On

I flush mounted my bass knob where the extra spaces are next to the esc button and light dimmer, in order to take that out i unplugged those two harnesses and now when i put it all back together my dash lights wont turn on (speedometer , temp, gas) along with where the a/c buttons are. What fuse would it be? I checked the one that said cluster but that wasn't it, what else could it be?

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Sonata NF (2006-10) :: Clunking Noise At Low Speeds / Braking Or Accelerating Away From Stop Lights

2007 Sonata 3.3. Crunching, clunking noise at low speeds, braking or accelerating away from stop lights. Noise disappears at speeds over 25-30 mph. Noise can be replicated by rocking car forward and backward while in park, with engine turned off. Rocking side to side does not reproduce noise. Bouncing car suspension at all four corners does not reproduce noise. Hood open, rocking forward and backwards, noise seems to be coming from behind engine, and with hand on engine motion can be felt. I'm thinking engine mount, but how can I get a good look at it to check?

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Sonata NF (2006-10) :: 2007 GLS - Parking Lights Stay On After Turning Off The Car

I have 2007 Sonata GLS and have noticed on several (at least 6) occasions that the parking lights (front turn signal lamps and tail lights) as well as the instrument lights will stay on after turning off the car, removing key and locking it. Usually I flip the switch a few times and they'll go off and stay off. Today wasn't so easy. I'm guessing it's the switch but wanted to know if this is isolated case or more common before I take to Hyundai. The problem can't be "duplicated" when you want it to happen. Usually it's on colder mornings when coming to work.

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Sonata NF (2006-10) :: Blinking Dash Lights When Start The Car

My dash lights flash on and off. Happens every time I start the car and always within a 1/2 mile - almost as if it is tied to the odometer somehow.

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Sonata NF (2006-10) :: Tail And Dash Lights Stopped Working

Tail and dash lights would go out unexpectedly, so I would turn light switch off and then back on and they would work. After about a week they stopped working all together...I checked all fuses related to the lights and dash as well as bulbs.

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Sonata NF (2006-10) :: Losing Power When Traveling At Steady Throttle And Engine Speed

Diagnosing our 2006 Hyundai Sonata.....2.4 L engine....automatic.

While cruising along, about 40mph and up I guess...when traveling at a steady throttle and engine speed... if you ever so slightly give it more gas, sometimes it will act as though it is losing power for a second and then kick back in.....but revs will stay up....

I was thinking either throttle position sensor or (gasp) transmission.....it doesn't really feel like a slipping tranny....but wondering if it is issues with the overdrive...

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Pontiac - Aztek :: Shimmy When Turning Right At Highway Speeds And When Accelerating

My '01 Aztek has a very odd shimmy. It only happens when turning right, at highway speeds, and when accelerating. Not when turning left, and not while just 'coasting'. Only when accelerating.

The mechanic replaced a tie rod end, and that seemed to fix things for a few hundred miles. But now it's back and is happening at lower speeds.

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Nissan - Maxima :: 1990 - Vibration At Highway Speeds When Turning Right

It is a '90 Nissan Maxima. I just replaced my drivers side axle (cv joint was clicking), and now my car vibrates at highway speeds when turning right. I am pretty sure I seated the axle correctly....could it be a bad axle? I heard that turning the axle 90 degrees and reinstalling may work? I got a new axle (Empi brand).

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Chevrolet - Tahoe :: 2004 - Grinding When Turning Right / Braking - Shaking At Highway Speeds?

I drive a 2004 chevy Tahoe and have had this problem for about 8 months. It started out very faint and occasional, but has now escalated to loud and consistent. So it ONLY happens when turning right. I've tried to replicate it when turning left and had no success. It happens when I am turning fairly hard at a decent speed. ex. Pulling into my driveway. I've already checked the wheel bearings and Ball joints.

Another thing is that the ABS light is on sometimes when i start the car and comes on every time i turn the steering wheel all the way to the right. It also has a problem where it will shake almost uncontrollably when driving at 65+MPH after hitting a bump or sometimes just randomly on a smooth surface. We just got new tires and balanced them. It did the same with the previous set we had. I know I'm asking for a lot, but where to start?

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Touareg :: Clicking Sound In Dash At Highway Speeds Like Solenoid Flipping On And Off

I did a search and see that this random clicking sound has been discussed but a source never identified. Thought I'd ask again 'cause mine is doing it more often and it's driving me nuts now that I hear it. Mostly at highway speeds, not tied to any particular function or steering wheel turning. It's like a solenoid flipping on and off. I know I could never get the dealer to replicate it and I assume if many Tregs have it, it's just a normal function but thought I'd ask.

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Sonata I45 (LF 2015+) :: Cabin Vibration At Highway Speeds

So about 5 months ago I started feeling vibrations in my seat and steering wheel. I got my tires road force balanced and it solved the issue. I just got back from a weeks long vacation in Maine. Before I left I had the tires road force balanced again to ensure a smooth ride up. I left some shaking in my seat so I wanted to get it ironed out.

While driving up my seat and the entire cabin shook when I exceeded 70 MPH, it got worse and worse the faster I went. The steering wheel didn't shake at all. I figured the tech balancing the tires did a bad job so I visited the BJ's in Portland. They re-balanced all my tires, I was present when the job was being done and noticed they were all out of balance.

The BJ's tech said it look like the shop that did the balancing over balanced each wheel (too much weight on each wheel). As soon as I hit the highway the same thing happened, shaking above 70MPH. At this point I determined it was probably a bent wheel. I visited a local wheel repair shop, they checked out both my rear wheels, since the steering wheel wasn't shaking I didn't bother checking the front ones.

It turns out both rear wheels are ever so slightly bent, they attempted the straighten out the more bent one. They tech repairing the wheel said he was surprised I even felt anything at all. So I had my hopes up that the problem would be fixed but as soon as I hit the road the same shaking returned. At this point, what's wrong with my car. I'm thinking of buying 4 new wheels, the car came from the factory with low profile 18 inch wheels which have been a curse.

A few more details about my car:

Toyo Proxes 4 Plus - Ultra high performance tires (Maybe contribute to harsh ride?) 20K miles on them

Installed thicker 20mm rear sway bar 6 months ago (But I never had shaking until now)

Installed front tower strut bar 6 months ago.

Total mileage 32K

I have hit lots of pot holes the past 2 winters lost 2 OEM tires and bent 1 wheel last year which was repaired.

Also I can't drive through it, the shaking doesn't stop with more speed it only gets worse. And the back end has started to feel squirrely over bumps.

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