Knocking Noise In Engine - Simple Fix for FREE

For the past month, I have a noticed a slight rhythmic thumping sound that speeds up and slows down with the speed of the car that sounds similar to a flat tire, but all the tire pressures are fine; it sounds like it is coming from the right rear wheel. Has anyone experienced this or know what could be causing it?

Could be a wheel bearing. Does it change when you go around a corner? Many good memories and friends made with this car.

Also look for a lump or bubble on your tire. This can happen if the steel belt starts to separate, and can cause a dangerously fast blow out. Take a torque wrench to the lug nuts.

I have had similar sound from loose lug nuts. Do you rotate your tires regularly? Mine had the same noise after I failed to rotate the tires in about 15k miles.

Right rear was cupped pretty bad. It may be an indication that you need new shocks. Do a google search for tire cupping or scalloping and you'll find all sorts of information. Slowly run your hand along the surface of the tire, you'll probably feel the "cups" or "scallops" along the inner tire edge. TDI s : passat tdi sel premium golf s tdi gls tdi b5. You also can try rotating your tyres when was the last time they were rotated? See if it changes after a rotation. If you take it to a tyre shop they can check them for balance at the same time.

I experienced the same thing soon after I got our wagon a couple of years ago. Tires had been rotated regularly, checked wheel bearings, etc. After searching these forums I discovered that some folks had similar problems with the same Michelin tires that I had on the car.

Switched to Continentals You both get dirty and the pig likes it. My Passat had a bent wheel out of round from my wife hitting a large pot hole.

Imagine bending a 17", 25 lb Bistar wheel! It sure was noisy over 40 MPH. Originally Posted by Big Mike. Originally Posted by hysterwv. Find More Posts by ymz. I'm still confounded at how rotating tires helps with this Two ways. First rotating the tyres may do nothing or it may make a difference. If it makes a difference, then you can be reasonable sure that it involves the tyre or wheel rotated and you can rule out things like suspension problems.

Originally Posted by ymz. If a problem like this develops on account of some mechanical fault shock absorber, axle bushing wouldn't rotating the tires lead to the abuse of two tires rather than one? Sorry for being a crab, but I just had one expensive Nokian winter tire have a belt separationThere are a few reasons why a car will make noise while braking at low speeds.

Maybe obvious, but worn brakes will make noise a low speeds. Some noise from the brakes is often normal, especially during the first drive of the day, after it rains, or if the car sits for an extended period of time. There are a number of other noises that a car can make only when braking at low speeds. A rusty backing plate the shield that protects the brake rotor from the elements can become deformed and rub against the brake rotor, creating a noise.

Modern cars use a complicated multi-link inspection. This means there are more parts to absorb all of the conditions Minnesota roads throw at your car. However, this also means there are more parts that can wear out as they take a beating. If there is a problem with the anti-lock brake system ABSthere will be a noise that sounds like a grinding when braking. Braking at low speeds creates a different situation than braking at high speeds.

At low speeds this change happens more slowly. This causes the entire car to shift on its suspension, which also changes the geometry of the suspension. These changes can cause the brakes to make contact in different ways, depending on the speed of the vehicle.

knocking sound when driving slow

The biggest sign you can look for to help pinpoint the cause of the noise is the presence of other symptoms. Worn brakes can also cause a pulsing feeling at high or low speeds. If there is a worn suspension component, you may also notice a difference in how the car feels when hitting a bump or when taking a corner. Vehicles are designed to handle any number of situations.

The noise might mean you need new brakes. It might mean you have a suspension or ABS problem. Any strange noise should be inspected by a professional. The first step to resolving the noise your car makes when braking a low speeds would be to know what is causing the noise.

3 Most Common Brake Noises: Causes and How to Fix Them

Once you know what is causing the noise, you can make the decision to either repair the vehicle or wait until something more serious happens. The number one way to prevent your vehicle from making noises and having problems is to have regular maintenance and inspections.

An inspection will reveal any brake or suspension wear, and assure your backing plates are in the correct position. Ya, every brake noise can be maddening, but the fact is it can make the car owner watchful of a forthcoming risk. Only a thorough inspection of vehicle brake system by a knowledgeable car professional can reveal the case. The noise you have described here usually comes into notice with the automobiles having semi-metallic pads.

This noise is an undemanding tremble which usually normally arises when the driver does not apply necessary force on the brake pads to stop his vehicle.This page is for personal, non-commercial use. Dear Tom, m y Chevy Cavalier makes a clicking sound in the front when I make a right turn. It doesn't do it when I turn left. Should I be concerned? What could cause this noise? Larry from Detroit.

My first thought, Larry Get the vehicle into a shop and have them check the CV joint on the side of the car where the clicking occurs.

knocking sound when driving slow

After I responded to Larry, I thought a little deeper about his problem and sent him a follow up e-mail. There are many possible conditions that would cause a clicking sound. Besides a bad CV joint, what else could cause clicking in the front end when turning? Loose Brake Pads The design of the brake pads assures that they are secured to the brake caliper seat. If they come loose, then the pad is allowed to jump up and down when the brake is applied. This action produces a clicking sound when driving slowly or when braking while driving at a slow speed.

Loose Brake Calipers Brake calipers are secured to their seat with bolts and guide pins that fit firmly through bushings. This design keeps the caliper suspended properly so that the brake pads make contact with the rotor, and the vehicle stops when they are applied. A loose caliper will flop around and make a clicking sound that emanates from that wheel.

Bent Brake Backing Plates Each brake has a backing plate attached to the back of it. This plate protects the brake from road dirt and prevents damage from projectiles. If the plate is bent inward, it will rub against the rotor or caliper and cause a clicking sound. A Loose or Cracked Wheel A wheel with loose lug nuts will click and rub or grind. A wheel with a crack will click.

This is more common with steel wheels.Heard a grinding, groaning, whining, or creaking sound out of your vehicle while taking a turn? Time to consider the problem!

It runs smoothly. However, if your vehicle is making any sort of noise while turning, there will certainly be a serious reason that is needs to be fixed. Vehicles often make different sorts of annoying noises when turning them. Since turning a vehicle involves the operation of many internal parts. It is understood that the noises are aroused due to mismanagement of these internal components.

Whenever a car makes any sort of unusual noise while you steer it around on the road, it is essential to look into the problem to stop it from getting worst. However, immediate lubrication may help to control it temporarily but it is best to look into the issue as soon as possible and visit a technician to find out the cause and fix it. A car has multiple reasons for producing annoying noises while turning.

These merely depend on the speed of the vehicle. If your car is making any sort of noise while turning at low speed, you must look into your power steering for the reason behind it. The suspension joints get damaged after a while because they bear the entire weight of the car along with the bumps experienced. These worn out joints cause the connecting parts to scratch over each other, and that tends to be the probable reason behind these noises.

Concerning the noises produced at high speed, when a vehicle makes any sort of noise while taking a turn at high speed, the reason behind it belongs to bearings, CV joints, or differentials. Usually, a vehicle is deemed to produce a crunching or clicking sort of noise while turning. The only reason behind such disturbance is the CV joints with poor coupling.

However, if there is any sort of humming noise, the reason can lie with the bearings being an overload of the weight of the car. Moreover, cars on normal speed are also often seen making squealing, whining, and screeching sorts of noises. Looking for the possible reasons, a damaged power steering seems to be the most likely reason behind it. Among many reasons behind unusual noises coming out of your cars while you turn them, worn out struts and shocks occupy the first place.

If you notice any sort of noise coming out of your car while turning it along with bumping or bouncing, it is a major possibility that your struts and shocks are no longer in good working condition. Though they may last a long time, as soon as they lose their life one must replace them for safety purposes. Dry jounce bushing tends to be another prime reason behind such noises.

The jounce bushing located on the front strut of your car gets dry and barren after some time and produces groaning and creaking sorts of sounds as soon as you turn your steering on either side. This problem can be fixed by consulting a technician or lubricating.

knocking sound when driving slow

Sometimes you may experience whining sort of sounds coming out your car while turning on low speed. This is usually due to a bad belt, bad power steering rack or bad van pump.Modern engineering has made driving a car easier on the ears than ever. What it means: If you hear something rattling around inside a wheel at low speeds and then stops as you drive faster it could be a loose lug nut inside a hub cap. Take your car to a mechanic ASAP.

What it means: If you hear a squealing noise, your brake pads or shoes might be nearing the end of their service life and must be replaced. If they grind or growl, get your brakes checked out immediately. It could be a sign that pads are so worn that metal is touching metal—a serious problem that could affect braking efficiency. Check out these 5 signs you need new brake pads.

What it means: If you have a front-wheel-drive or all-wheel drive vehicle and hear this sound when you turn or corner but the noise stops when you steer straight one or both of the constant velocity CV joints on your front axle could need replacing.

What it means: If you have rear-wheel or four-wheel drive and hear this sound, the culprit could be the universal joint U-jointwhich are found in pairs and are components of the driveshaft. Get it checked by a mechanic immediately. But which ones? If you have rear-wheel drive and the whine gets louder as you accelerate, your differential, which allows your wheels to spin at different rates when needed, could be leaking fluid. Get it fixed immediately. What it means: There could be a serious problem with valves, connecting rods or pistons.

Get to a mechanic ASAP. What it means: This could come from worn or loose accessory belts that drive things like your power steering pump, air conditioner compressor and alternator. With newer cars, it may point to the serpentine belt, which drives multiple accessories at once, and is relatively easy and cheap to fix. Add ERS to your policy for just pennies per day per vehicle. Email Your email address will not be published. Thank u for taking the time to do this at least it gave me a clue what could be wrong with my car.

I think a lot of people would buy him. Thanks a great deal Geico. Leave a comment cancel reply Comment Name Email Your email address will not be published. Thanks Geico, Helpful information, you guys are on the ball.Original Poster. Search My Stuff What's New 3 12 24 Starting to get a strange knocking sound when moving away slowing down, checked wheels, suspension, chassis and exhaust but no problems found - thoughts appreciated.

Where is sound coming from? Front enginemid-car drive trainrear axle? A bit of a stab in the dark without some more detail though Definately coming from the rear behind me - maybe more on the left hand side but difficult to track from drivers seat.

GreenV8S 28, posts months.

5 Reasons Why a Car Makes a Knocking Noise When Driving Over Bumps

Mine used to do this I assume from your description it is mainly as you slip in the clutch in first and reverse gears [worse I found in reverse], or as you dip the clutch and relieve power on stopping and I stopped the majority by changing the off-side drive shaft CV joints.

The noise finally stopped when I took the body off and replaced the U shaped Diff mount which was persihed and split I don't get the noise at all now. BTW even with the diff mount split I couldn't really move it by hand so the only way you'll know if this is the case is to drop the diff or remove the petrol tank to be able to see it. HTH Mark. Barkychoc 7, posts months. The rear diff mount on the V8S is a bit different - but the same applies really. If you come to a standstill then move in reverse does it clunk or anything as you take up the drive?

Similarly stopping in reverse then going forwards. On the diff carrier bracket there are 2 rubber mountings on top of it that bolt it to the chassis - each one has a bolt that goes through it into the chassis. There are also 2 rubber bushes at the rear of the diff different to V6 - my car overall was in very good condition when I stripped it - but those 2 rear bushes were absolutely shot allowing the diff to twist.

Pic below of rear mount Also check those black rubber mounts on top of the cradle. It could be a Haynes manual that bears no relation to reality! If my S chassis was like that I don't think I'd bother putting the body back on.I have a 99 Ranger 3.

It just started making a knocking noise from the front end, but only at slow speeds, like MPH. Once i start getting faster up to road speed, it doesn't make the noise anymore. Is the noise related to vehicle speed such as it is a slow knock but increases as speed increases up to the 15 mph you cite. That's a rotating part problem related to wheel bearings or CV joints.

Otherwise, I'd look for a loose front end part - tie rod, ball joint or strut or steering linkage component. I would strongly suggest you pick up a service manual, go to the troubleshooting section, it will give some symptons to help pin point the issue. From there you solve the issue with the step by step instructions in the manual or you go to a shop and tell them the issue.

I wouls fix it myself if you have the extra time a shop is pretty expensive. Or at least check them out and see what manuals they have for your ride lol.

knocking sound when driving slow

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Car Noises: My Car Makes a Noise When Braking at Low Speeds

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