What to do if your Altima engine is vibrating?

What to do if your Altima engine is vibrating?

To check for engine-mount problems, the mechanic may try shifting from “neutral” to “drive” and back, while the engine is running. If the vibrations disappear or reduce dramatically in “neutral,” it’s likely that you need new engine mounts.

Why does my Nissan Altima shake when I ID?

If an oxygen sensor goes bad, it can make your Altima run too lean (or rich). A super lean running engine will often shake when idling. The mixture would be wrong at all RPM, but as the engine speed increases the shaking decreases. 7. Fuel Injectors

Why is my Audi A4 engine pulsating and vibrating?

Any unusual shaking or vibrating forces coming from the engine is cause for concern. It could be something as simple as old spark plugs producing an uneven power delivery, it could be something serious like worn or broken engine mounts, or it could be even more serious in the case of internal engine damage.

Why is my Nissan Altima engine not working?

Loose or disconnected hoses on and around the engine (not the coolant hoses that go to and from the radiator) are frequently culprits behind intermittent engine operation. Very dirty or clogged air filters can also cause your engine to underperform. Loose timing belts are another likely cause.

To check for engine-mount problems, the mechanic may try shifting from “neutral” to “drive” and back, while the engine is running. If the vibrations disappear or reduce dramatically in “neutral,” it’s likely that you need new engine mounts.

Any unusual shaking or vibrating forces coming from the engine is cause for concern. It could be something as simple as old spark plugs producing an uneven power delivery, it could be something serious like worn or broken engine mounts, or it could be even more serious in the case of internal engine damage.

Loose or disconnected hoses on and around the engine (not the coolant hoses that go to and from the radiator) are frequently culprits behind intermittent engine operation. Very dirty or clogged air filters can also cause your engine to underperform. Loose timing belts are another likely cause.

What are the symptoms of a failed motor mount?

Symptoms you may experience from a failed motor mount are vibrations at idle, noises while going over a bump and vibrations when the transmission is shifting. Replacement of the motor mount is needed to fix the issue. The average cost for a Nissan Altima General Diagnosis is between $88 -$111. Learn More Good news!

Are there any problems with the Nissan Altima?

Read more » Owners are complaining about vibration and even transmission failure related to the CVT (Continuously Variable Transmission). Click on a category below for details. Help? Loading …

Why does my car vibrate when I shift gears?

I don’t know how much it is supposed to shift it at all, but it appears to be excessive. if vibration stop when car is running, Vibrates while in idle or when you are in the traffic, vibration stop when you put your gear to Neutral, vibration stop when you turn off the aircon, the most likely problem is your timing chain.

What are the problems with a 2014 Nissan Altima?

Worst 2014 Nissan Altima Problems #1: Transmission Failure 2014 Altima Average Cost to Fix: $3,800 #2: Shudders And Jerks 2014 Altima Average Cost to Fix: $3,100 #3: Air Bag Light On/Off 2014 Altima Average Cost to Fix: $1,800

How much does it cost to have a Nissan Altima engine inspected?

Nissan Altima Engine is shaking, pulsating or vibrating Inspection at your home or office. Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM. Our certified mobile mechanics can come to you now. Nissan Altima Engine is shaking, pulsating or vibrating Inspection costs $89 on average.

Nissan Altima Engine is shaking, pulsating or vibrating Inspection at your home or office. Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM. Our certified mobile mechanics can come to you now. Nissan Altima Engine is shaking, pulsating or vibrating Inspection costs $89 on average.

If an oxygen sensor goes bad, it can make your Altima run too lean (or rich). A super lean running engine will often shake when idling. The mixture would be wrong at all RPM, but as the engine speed increases the shaking decreases. 7. Fuel Injectors

Are there any transmission problems with the Nissan Altima?

For the past few years, many drivers have been complaining of Nissan Altima transmission problems, most notably stuttering between gears, hesitation, sputtering, vibration, not shifting properly, and even complete transmission failure.

What causes a rough idle in a Nissan Altima?

Spark Plug Wires – While not every model and engine combination of vehicles today comes with spark plug wires (a lot are now coil on plug), if your Altima happens to have them, they can go bad and cause a rough idle. Here’s a great video on how to diagnose bad plug wires with a multimeter. 2. Vacuum Leak

Why does my car vibrate when I accelerate?

Engine mounts are generally rubber mounted braces that hold the engine in place to the chassis of the car. When these break or become weak or faulty, this may cause the engine to vibrate heavily. When tires are out of balance, as the speed of the vehicle increases, the vibration will become much more noticeable and pronounced.

Why does MY BMW 328i engine keep vibrating?

Loose timing belts are another likely cause. A mechanic will check these and replace them if they appear loose and worn. To check for engine-mount problems, the mechanic may try shifting from “neutral” to “drive” and back, while the engine is running.

What kind of car is a 2008 Nissan Altima?

Driving the Used 2008 Nissan Altima. The 2008 Altima Hybrid shares the firm ride, brisk responses, limited body roll, precise steering and excellent braking that make all Altimas fun to drive, though some of that is mitigated by the extra mass that goes with the hybrid system.

What kind of radio does the Nissan Altima have?

The Altima Hybrid receives a new Diversity Antenna and factory-activated XM Satellite Radio option. The Nissan Altima Hybrid provides yet another alternative in a growing list of midsize hybrid sedans that includes the new Chevrolet Malibu Hybrid. But Nissan is hedging its bets.

Is the Nissan Altima Hybrid a good car?

The 2008 Altima Hybrid shares the firm ride, brisk responses, limited body roll, precise steering and excellent braking that make all Altimas fun to drive, though some of that is mitigated by the extra mass that goes with the hybrid system.

What kind of engine does a Nissan Altima have?

Although the hybrid technology comes from Toyota, Nissan has adapted it to Altima powertrain hardware. The engine is the Altima’s basic 2.5-liter four-cylinder, detuned slightly (from 175 horsepower to 158) and augmented on demand by a 40-horsepower electric motor.

What to do if your Nissan loses power?

My nissan suddenly lost power. No check light, or missing. My nissan suddenly lost power. No check light, or missing. – Answered by a verified Nissan Mechanic We use cookies to give you the best possible experience on our website.

Why does my car shake at 65 mph?

car begins to shake when accelerating…becomes rather violent at 65+mph. if you get up to speed and let off the gas, the shaking stops and the car rides smooth. I did not notice any broken/deteriorated motor mounts.

Why does my car make a rattle noise when I start it?

Some of us have split of a second rattle noise on startup because the timing chain tensioner building pressure time. This noise should disappear after few seconds. The one that you need to check is the dribbling noise after bumps. It could be your passenger side and rear side engine mounts, or some screws loose behind the cowl/windshield.

Why does my Nissan Altima make a rattling noise?

What are common reasons my Nissan Altima engine rattles? While there are a variety of reasons your Nissan Altima is rattling, the most common 3 are the ball joints, struts or strut mount, or a problem with the sway bar links.

Why does my Altima start with no oil?

First off the problem is not the heat shield and it’s not just the Altima. Second the problem is the cams/valves in the head. When the engine sits for 8 hour or less the oil coating drains off the cams/valves. What you are hearing on start up is the valves and cams with 0 oil on them. There is few things you can try first off I must talk about OIL.

Some of us have split of a second rattle noise on startup because the timing chain tensioner building pressure time. This noise should disappear after few seconds. The one that you need to check is the dribbling noise after bumps. It could be your passenger side and rear side engine mounts, or some screws loose behind the cowl/windshield.

What’s the problem with the Altima heat shield?

First off the problem is not the heat shield and it’s not just the Altima. Second the problem is the cams/valves in the head. When the engine sits for 8 hour or less the oil coating drains off the cams/valves. What you are hearing on start up is the valves and cams with 0 oil on them.

Why does my Nissan Altima make an annoying noise?

When speeding up, the car vibrates and makes an annoying noise which seems to be coming out from the engine. There is a power loss every now and then and it seems to be on the verge of stalling. When I stop the car I have to put it in a parking mode in order to avoid the noise.

What causes a car to shake when accelerating?

A stuck caliper starts to shake at 40 to 50 mph, and the vibration becomes worse with acceleration. When car vibrates when accelerating, it’s not unusual to get a whiff of burning odor when the car stops. #6. Broken Radiator Fan A cracked or damaged fan won’t hamper the engine operation in any way but it will lead to car shakes when accelerating.

Why does my Altima go limp at high RPM?

I think mine might be the acceleration pedal sensor isn’t communicating properly with the ECM or the throttle position sensor. This theory is supported by the high rpm issue which might be the car going into “limp in mode” which is to allow the owner to drive the car to the nearest shop when accelerator issues occur.

Is there a problem with my Nissan Altima?

56 people found this helpful. I have a 2015 altima with the same sporadic acceleration issue. Every once and a while it has poor acceleration from stop and very occasionally it revs high rpm without shifting. I solve the high rpm issue by stopping, turning the car off and waiting 15 seconds before restarting.

Why does my Nissan Altima not accelerate when the light turns green?

Sometimes when a red light and when the light turns green i put my foot on gas pedal and car would not move for few seconds and then finally it would go. Sometimes i have to pull to the side and turn off and the car and restart so it reboots because the car does not accelarate normally at all no matter how many times i try to accelerate.

What to do if your Nissan Altima Jerks?

1. Start the engine and let it warm up until the normal working temperature, that is when the radiator fans start working. 2. Switch the engine off and wait for 5 seconds. 3. Turn the ingition switch until the indicator lights turn on, and wait 3 seconds 4.

Why does my Nissan Altima hesitate at 2000 rpm?

I have a problem with my car, 3 months ago the engine started with a hesitation or stumble when reaching 2000 rpm. First, my husband did the tune up (the only thing he didn’t do was changing the fuel filter, as in Autozone he was told that it was only sold together the fuel pump).

Spark Plug Wires – While not every model and engine combination of vehicles today comes with spark plug wires (a lot are now coil on plug), if your Altima happens to have them, they can go bad and cause a rough idle. Here’s a great video on how to diagnose bad plug wires with a multimeter. 2. Vacuum Leak

What causes car to vibrate when in idle?

Q: Car vibrates/shakes when sitting still in idle (in gear or in neutral). After having my car serviced for oil change, tire rotation and air filter replacement, as I was leaving the service center my car had a new engine vibration/shake while in park or neutral in idle.

Why does my car vibrate when in neutral?

Q: Car vibrates/shakes when sitting still in idle (in gear or in neutral). After having my car serviced for oil change, tire rotation and air filter replacement, as I was leaving the service center my car had a new engine vibration/shake while in park or neutral in idle. If I rev the motor to 1000 rpm the problem seems to go away.

Loose timing belts are another likely cause. A mechanic will check these and replace them if they appear loose and worn. To check for engine-mount problems, the mechanic may try shifting from “neutral” to “drive” and back, while the engine is running.

Why does my Nissan Pathfinder shake when I Turn right?

Car has a vibration when you turn right ( to the effect like your driving over rumble strips) also does it when you are at a full stop give it some gas & it has that rumble strip effect.. What can it be? Update on vibration of 2005 Pathfinder.

Why does my Nissan Altima idle rough in gear?

(side note: strutmasters.com sells quick-struts for 3rd gen L31 Altima for $90 each! I put them in yesterday and I am very happy with them so far) After all this work, my altima is still idling rough in gear. Not as bad since the engine mounts but here’s another clue as to what might solve some symptoms.

Why does my Nissan club engine shake when in gear?

Replaced and violent shaking is gone HOWEVER, it’s still shaking a bit. Upon inspection the automatic tensioner is vibrating and moving quite a bit. Going to replace that today or tomorrow. Also, the crank pulley appears to be off by about 1mm.

Why is there a vibration in the back of my car?

One of the tires/wheels on the rear is the problem, that’s why the vibration moved from the steering wheel to the seat of your pants. Move one tire back to front on one side of the car at a time and that should isolate the one tire that is the culprit.

What causes a vibration when you put on new tires?

Immediately after the new tires go on, I notice a vibration from the steering wheel at highway speed, above 60 mph. I took the car back to the tire shop (an independent tire shop, not a chain) and asked them to rebalance the tires. They did, and I took the car home. Drive to work the next day, vibration is worse.

Immediately after the new tires go on, I notice a vibration from the steering wheel at highway speed, above 60 mph. I took the car back to the tire shop (an independent tire shop, not a chain) and asked them to rebalance the tires. They did, and I took the car home. Drive to work the next day, vibration is worse.

One of the tires/wheels on the rear is the problem, that’s why the vibration moved from the steering wheel to the seat of your pants. Move one tire back to front on one side of the car at a time and that should isolate the one tire that is the culprit.

Why does my car shake after a tire change?

Shaking in the floor and pedals often point to a rear tire problem and is this bad ball joint on the rear of the car? A bad ball joint should definitely be replaced but the concern also would be this tire being .5 ounce out of balance.

Why is my Acura TSX vibrating after a tire change?

Since many tire busters don’t spend a lot of time trying to understand these sorts of things, they will continually try to re-balance tires in the hope that this is the problem. But there are certain vehicles that seem overly sensitive to balance and uniformity – and the Acura TSX seems to be of them.

Why does my steering wheel shake when I brake?

Brake Pad Issues. Your steering wheel can shake if your pads are contaminated with oil, dirt, or other substances. They can cause vibration when they grip the rotor. This shaking can also happen if the pads are warped, damaged, or excessively worn. If it’s your brake pads, you will likely hear a high pitched whining noise when braking.

Is it necessary to replace brake rotors on Nissan Altima?

Often, resurfacing or replacement of the brake rotors is necessary and a competent mechanic will always measure for wear and damage to the brake rotors and advise you as to whether rotor replacement or re-surfacing is needed. Fast and easy service at your home or office. Real customer reviews from Nissan owners like you.

How much does it cost to replace brake pads on a Nissan Altima?

Upfront and transparent pricing. Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM. Nissan Altima Brake Pad Replacement costs $162 on average. What are brake pads and how do they work? Brake pads consist of friction material that is bonded to a sturdy steel backing plate.

How much does it cost to replace a disc on a Nissan Altima?

received a Brake Rotor/Disc Replacement. Nissan Altima Brake Rotors/Discs Replacement costs $290 on average. What is the Brake Rotor/Disc all about? A brake rotor is a smooth metal disc attached to the wheel hub. Most new cars (1999 and above) come with rotors at each wheel. Older cars may have drums instead of rotors at the rear wheels .

How often does the steering wheel shake while driving?

The shaking is very inconsistent, though. Sometimes it hits 65 before it shakes, but other times its barely 60. I just had my tires balanced, and the shaking isn’t consistent. It’ll shake for a second or two, then stop, then shake, then stop and so on.

Can a bald tire cause your steering wheel to shake?

Bald tires will definitely cause your steering wheel to vibrate and your car to shake. Furthermore, if you continue driving on bald tires, they are likely to blow out, and having a tire blow out at highway speeds is extremely dangerous, especially if it’s a front tire.

Why does my car shake when I turn the wheel?

Vibrations in your car don’t always come from tire problems. In the first video, there is not only bad shaking from an unbalanced tire, but also a wheel-bearing noise that is louder when the steering wheel is turned to one side.

What causes the Nissan club engine to vibrate?

Upon inspection the automatic tensioner is vibrating and moving quite a bit. Going to replace that today or tomorrow. Also, the crank pulley appears to be off by about 1mm. Any idea which way it’s threaded…clockwise or counter-clockwise? On a side note, the engine shifts forward or backward when placed into Drive and Reverse.

I don’t know how much it is supposed to shift it at all, but it appears to be excessive. if vibration stop when car is running, Vibrates while in idle or when you are in the traffic, vibration stop when you put your gear to Neutral, vibration stop when you turn off the aircon, the most likely problem is your timing chain.

Upon inspection the automatic tensioner is vibrating and moving quite a bit. Going to replace that today or tomorrow. Also, the crank pulley appears to be off by about 1mm. Any idea which way it’s threaded…clockwise or counter-clockwise? On a side note, the engine shifts forward or backward when placed into Drive and Reverse.

Why does my car vibrate when in reverse?

Far as I can see they all appear to be fine. When the car is put into either Drive or Reverse and stopped, then engine vibrates terribly…just replaced the serpentine belt because it shook so much it jumped. Any ideas which mount could be bad?

What are the O2 sensors on a Nissan Altima?

The oxygen sensors that are equipped in your Nissan Altima are responsible for monitoring the exhaust to help the ECU determine the correct air/fuel mixture. Of all the sensors equipped in your vehicle, the O2 sensors may have it the hardest. They deal with super hot exhaust that can cover them in deposits that can leave them ineffective.

Why does my Nissan Altima not accelerate properly?

Have. 2005 Nissan Altima 2.5l..just changed camshaft sensors and 02 sensor, now the car doesnt accelerates correctly. Im deaf and cant hear any noise in/from the engine. The car accelreated fine before the sensors replacement….should i reuse the old sensors or is the acceleration a new problem.

Where is the cylinder 4 on a Nissan Altima?

An important thing to understand when finding the location of Cylinder 4 is that it’s going to be the 4’th cylinder in the firing order of the vehicle, and not the 4’th cylinder that you might see when looking at the engine. The P0304 trouble code will trigger the Altima’s service engine soon light.

What happens if you misfire the cylinder 4 Nissan Altima?

It also can cost money to ignore it, since driving with a misfire can damage the vehicle’s catalytic converter. The engine is also not firing all of the fuel, so raw fuel is also passing through Cylinder 4 into the exhaust. Mileage may suffer as well when your Altima has P0304 as well.

Is there a problem with Nissan Altima p0304?

P0304 is certainly a cause for concern, and should be considered a threat to the drivability your Altima. The nice thing about P0304 is that it’s a cylinder specific trouble code, which makes diagnosing the problems simpler than P0300, which means that the cylinders are randomly misfiring.

Far as I can see they all appear to be fine. When the car is put into either Drive or Reverse and stopped, then engine vibrates terribly…just replaced the serpentine belt because it shook so much it jumped. Any ideas which mount could be bad?

What should I expect from a 2007 Nissan Altima?

The 2007 Altima interior has an enhanced feel with refined workmanship and expanded use of soft materials (such as padded armrests) and chrome accents. Interior noise levels have been reduced through use of the new rigid platform and increased sound insulation.

Are there any Nissan Altimas that are accessible?

The Nissan Mobility Assist Program is committed to making every Nissan vehicle accessible. We’re offering up to a $1,000 reimbursement on your purchase and installation of qualified adaptive equipment. The 2019 Nissan Altima is still available. Pick your version, colors and packages, and make it distinctly yours wiith Genuine Nissan Accessories.

What kind of engine does the Nissan Altima have?

2.0-liter Variable Compression Turbo (VC-Turbo™) engine. Remote Engine Start System and Rear Door Alert. NissanConnect® 8″ touch-screen display. 2.5-liter direct injection gasoline (DIG) engine. The Nissan Mobility Assist Program is committed to making every Nissan vehicle accessible.

What are the ratings on the Nissan Altima?

The Nissan Altima is a mid-size car. Read more Nissan reviewsto learn about other models. Overall Satisfaction Rating 5 stars 259 4 stars 330 3 stars 119 2 stars 29 1 stars 15 Time for a new car and not sure where to start? Search local inventory today! Find a Dealer Near You Nissan Altima Reviews Sort: Recent Recent Oldest

Why is my Nissan Altima having issues taking off?

Have a 2017 Nissan Altima that’s having issues taking off from a stop after it’s been driven a little. Took it to a mechanic and his code reader said a code for solenoid (B) stuck or off in a CVT Transmission.

How do you relearn the idle position on a Nissan?

Shut the car off, and begin the throttle position/idle relearn procedures as listed in the service manual/other places online. When you reach the step to press and hold the accelerator for 20 seconds, watch the SES light. It will blink several times, then come on steady. Start the car immediately within 3 seconds of the steady light coming on.

Why is my Nissan club idle not stable?

The car will throw misfire codes – do not worry about this. Shut the car off, and begin the throttle position/idle relearn procedures as listed in the service manual/other places online. When you reach the step to press and hold the accelerator for 20 seconds, watch the SES light.

What causes a Nissan Altima to shake when idling?

Your Nissan Altima’s fuel injection system atomizes the fuel into a fine mist. If a fuel injector is not operating properly, it will either let too much or too little fuel into the combustion chamber relative to the amount of air. There are many reasons why a fuel injector may go bad, as well as different symptoms relative to how they went bad.

Why does idle not stable, surging, idle?

After doing it a few times, I still have the same issue. RPM constantly changing between 2000 and 1000, gear in P or N. (this engine surging issue happened before, not common, once in a while) It is not a major issue, as long as my MPG isnt affect (just topped up and will be monitoring that).

What kind of vibration does a Nissan Altima make?

I have a 2009 Nissan Altima Sedan 2.5 S that had 114K miles when it got the same annoying vibration problem at 1200-1500 RPM. In addition to the vibrations, I would also hear ticking noises upon cold engine start-up, the engine would make a light grinding noise when idling in gear, and the car would lurch at low RPMs.

What kind of car is the Nissan Altima?

The 2010 Altima Coupe is available in four well-equipped models: 2.5 S 6MT, 2.5 S CVT, 3.5 SR 6MT and 3.5 SR CVT.

Why does vibration stop when you put the car in neutral?

if vibration stop when car is running, Vibrates while in idle or when you are in the traffic, vibration stop when you put your gear to Neutral, vibration stop when you turn off the aircon, the most likely problem is your timing chain. no, most likely alternator clutch binding. Check for belt flop.

When do Nissan Altima engines hesitate during acceleration?

Nissan Altima Engine hesitates during acceleration Inspection at your home or office. Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM. Our certified mobile mechanics can come to you now. Nissan Altima Engine hesitates during acceleration Inspection costs $89 on average.

I think mine might be the acceleration pedal sensor isn’t communicating properly with the ECM or the throttle position sensor. This theory is supported by the high rpm issue which might be the car going into “limp in mode” which is to allow the owner to drive the car to the nearest shop when accelerator issues occur.

Sometimes when a red light and when the light turns green i put my foot on gas pedal and car would not move for few seconds and then finally it would go. Sometimes i have to pull to the side and turn off and the car and restart so it reboots because the car does not accelarate normally at all no matter how many times i try to accelerate.

What’s the idle mode on a Nissan Altima?

General discussion area for the L31-chassis Altima, including the 05-06 SE-R models. When placed into gear (reverse/ drive/ 3 / l2 / l1) and at idle, the engine vibrates enough to drive me mad. another forum suggested a grounding kit and I’m considering giving that a try.

What causes a Nissan Altima to jerk while driving?

Here is the car complaints information — “Summary: On certain passenger vehicles equipped with a 2.5L engine, the crank angle sensor is affected by temperature variations. Under certain driving conditions, these variations in temperature can be large enough to cause a brief interruption in the signal output from the sensor.

General discussion area for the L31-chassis Altima, including the 05-06 SE-R models. When placed into gear (reverse/ drive/ 3 / l2 / l1) and at idle, the engine vibrates enough to drive me mad. another forum suggested a grounding kit and I’m considering giving that a try.

I have a problem with my car, 3 months ago the engine started with a hesitation or stumble when reaching 2000 rpm. First, my husband did the tune up (the only thing he didn’t do was changing the fuel filter, as in Autozone he was told that it was only sold together the fuel pump).

Nissan replaced both rear shocks under warranty and provided free loaner Car still makes the same noise in the front on the right side, could not replicate at dealership; they replaced some links etc. in the front. Noise still there. High pitch whine from electric power steering…

Why does my Nissan Altima make a roaring noise?

TSB was performed to install an acoustic mat over pump to minimize EPS Pump whine. The passenger side wheel bearing was going bad. It made a roaring noise, kind of like a prop airplane, at high speeds. The dealer replaced it.

Why are my rear shocks leaking on my Nissan Altima?

Right Rear shock was discovered to be leaking a few weeks ago, took it in after a few weeks of notice to finally get BOTH rear shocks replaced as a pair per service adviser’s recommendation. Rear and front wheel bearings had gone bad.

Why does my Nissan Altima make a whirling noise?

Whirling noise when ac was on low due to Improperly mounted cooling tank? 1st was told it was a normal sound from the power steering because off the electric assist and that they topped off the fluid. Upon routine oil change, technician noticed rear shocks seeping fluid.

Nissan replaced both rear shocks under warranty and provided free loaner Car still makes the same noise in the front on the right side, could not replicate at dealership; they replaced some links etc. in the front. Noise still there. High pitch whine from electric power steering…

Right Rear shock was discovered to be leaking a few weeks ago, took it in after a few weeks of notice to finally get BOTH rear shocks replaced as a pair per service adviser’s recommendation. Rear and front wheel bearings had gone bad.