What causes a knocking sound when you just start the car?

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What causes a knocking sound when you accelerate?

If you hear a light knocking or pounding sound, the noise can usually be traced back to your connecting rods.This sound is often most noticeable when the engine is at an even rpm–not accelerating or decelerating–and is often caused by a worn bearing or crankpin, misaligned connecting rod, or lack...

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What would cause a strange sound when starting the car?

You will have to be more specific. Describe this strange sound.

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What causes a car to squeak when just started?

Usually the accessory drive belt is faulty

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What is causing the high idle sound when you start your car?

Cars often idle fast when you start them up. The automatic choke will make the car idles fast for a while then the idle speed will slow down, once the engine warms up.

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Although the car starts what is the cause of a grinding sound when you turn the cars ignition key?

This is probably the starter going bad. You should have it looked at as soon as possible or replace the starter yourself.

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What would cause a knocking sound in front driver tire when breaking and turning left?

If it's a front wheel drive car, bad CV (constant velocity) joints are a possibility. Worn spring pins or spring pin bushings are another. Worn or out-of-alignment wheel bearings are yet another. If you have disc brakes, bad or warped rotors could also be a possibility.

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Your car just started to make a whistling sound?

check for loose fan belt may also be intake manifold gasket leaking

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What causes an engine to make knocking sounds?

Knocking as opposed to pinging or ticking, usually means seriously worn bearings of some sort. Time for an overhaul.

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What would cause knocking sound to begin around 80 mph and disappear when stop car for a couple mins?

Bad, worn out, out of round, broken: lifters, piston rod, cam(s), exhaust manifold gasket. sounds like it makes that noise when the engine is hot and its revolutions (rpm) is at a high peak. my advice get it diagnosed before your engine blows up.

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What does it mean when you hear a knocking sound from your car?

The knocking sound often occurs when the air-fuel mixture is incorrect, which causes the fuel to burn in uneven pockets rather than uniform bursts.Left untreated, it can cause damage to the piston and cylinder wall.A knocking sound can also be caused by a lack of lubrication in the upper cylinder...

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What would cause a thumping sound from the front of your car and a grinding sound when decreasing speed and excabberate the knocking when you turn slighly to the right Worse after car has warmed up.?

Those details have the classic sound of a worn constant velocity (CV) joint on the right side passenger wheel. If it is found to be bad, remember that these days it may be cost-effective to replace the whole axle on that side.

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What causes a car to just click and not start?

The starter won't crank If nothing happens when you turn the ignition key to the "Start" position, it means that the starter motor doesn't turn over the engine.Most commonly this could be caused by a dead battery; here is How to check the battery.The starter motor itself or a starter solenoid co...

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Why do you hear a knocking sound when you push the gas pedal while driving?

You're hearing what's known as "detonation", which is caused by the fuel-air mixture igniting instantaneously, rather than in a controlled, smooth burn. Since its pressure spike arrives way too soon in the cycle, the pistons are hammered back down in their bores before they've reached the top. Be...

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Your Yamaha blaster starts and idles but when you rev it dies and makes a weird knocking sound from engine?

you broke it!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! dumb bo

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Why does your car make a knocking sound when you turn left?

Could most possibly the CV joint (constant-velocity joint)

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What would cause a knocking noise when the engine is cold . What does a clicking or ticking sound mean when accelerating or releasing the gas pedal?

a "knocking" noise could be your lifters. and the ticking when accelerating and letting out of the gas is the same thing. check your oil and if it's full then you may need to think about either having them adjusted, or getting new ones. depending on what you have depends on whether or not you wan...

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Your car makes a screeching sound when you start it?

Most probably your fanbelt. You should have your car serviced as it could be a number of serious problems aswell or just replace the fanbelt and see if it works.

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Had exhaust replaced and now theres a knocking sound more so when reversing coming from under car kind of centre Also just before this started happening there was a slight clanging sound?

Take it back immediately to who ever did the exhaust work.

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Why does my car knocks when you first start it?

its called a "dry start" and Many cars do it .. when the car sits for a little bit like 30 mins or more .. all( or atleast the most) of the oil runs back down to the oil pan .. once u start it .. it has to regain oil pressure to stop rattling...........................

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What causes a rubbing sound when driving a car?

The wheel hub bearing could be getting noisy or the scraping noise could be caused by the brake pad material.The most common cause of such noise is when the metallic material in the brake pad makes a scraping noise when brakes are not being applied and then it becomes noisier when the brakes are ...

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What would cause a knocking sound in the top of the engine when the car is in gear on an older Mercedes Benz?

There could be several things causing a knock in the top of your engine, most likely is that you are not using premium fuel.Depends on the engine if its diesel the answer should be right, if its petrol it could as well be a whole bunch of other stuff.

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What could cause a car to sound like something is frozen under the hood when starting it in cold weather?

change your oil,and get a filter that retains oil for start ups like purolator pure one .make sure your oil is the correct weight.

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Why do I hear a knocking sound when I brake?

The knocking noise mentioned earlier is caused by the brake pads rattling in the brackets.Lightly apply pressure to the brakes while going over a potholed road.If the noise is gone, the pads are moving.To fix the rattling pads, buy a hardware kit with the parts needed.

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What causes a humming sound when you put on the gas to drive your car?

Check transmission fluid and power steering fluid.

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What can cause a squeeking sound which starts once the car is warm but stops when turning and breaking?

It could be the brake "sqealers" telling you it is time to replace the brake pads. Have the brakes checked.

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What causes a car's wheel to knock loudly when you are turning?

My first thought is that the wheel bearing is failing....replace it soon! The other idea is the front half shaft CV Joint is failing. ( the front wheel drive..drive shaft on the side the noise comes from)

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What causes a grinding sound when driving?

If the brakes or wheel/hub bearings aren't causing the grinding noises, it's time to explore other parts that could be the source of your issues.Water pump – A failing water pump can causes a grinding noise while the engine is running.Alternator – Grinding noises can also be a sign that the alter...

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What is that knocking sound when I accelerate?

If you hear a light knocking or pounding sound, the noise can usually be traced back to your connecting rods.This sound is often most noticeable when the engine is at an even rpm–not accelerating or decelerating–and is often caused by a worn bearing or crankpin, misaligned connecting rod, or lack...

Read more

Clicking sound when starting car?

A number of things could be wrong in this instance. The battery could have just enough power to drive the solenoid responsible for engaging the starter, or (if the battery is known to be good) the starter itself could be going bad. The starter is nothing more than an extremely powerful electric m...

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What would cause a knocking sound from front left of car when braking and gets louder and faster as you apply more brake?

Disc--Probably warped rotor but could be malfunctioning ABS system.Drum--Probably need brake linings adjusted but could be malfunctioning ABS system.Pull wheel or see mechanic.

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What causes a whining sound when accelerating?

One of the prime reasons for whining noise may be friction caused in the car transmission mechanism.The reasons for this might be worn out gears and low transmission fluid levels.Accelerate the car to speeds at which the whining noise is the loudest, switch to neutral gear and kill the engine.

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Why does my car make a knocking sound when I press the gas?

Knocking Noise when Accelerating If your car makes a rattling noise when accelerating, it could be your engine is worn out with low oil pressure or piston slap.If your car makes a humming noise when accelerating, it could be an issue with a failing wheel hub or a drivetrain concern.

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What cause tick tick tick sound when trying to start a dodge desial 2500 truck?

If it's before you actually turn the key to the start position, Cummins engines use an electric priming pump, so it might be that. If you're hearing that sound as you try to actually start the truck, and it doesn't crank, then your starter is toast.

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What does a knocking rod sound like?

What Does Rod Knock Sound Like? Rod knock sounds like someone banging on your oil pan with a hammer, rhythmically tapping, or, (at higher RPM) banging.The pitch and frequency may change, fade or nearly disappear when you accelerate.These sounds are also called "engine knock," "spark knock," and "...

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What does a rod knock sound like?

What Does Rod Knock Sound Like? Rod knock sounds like someone banging on your oil pan with a hammer, rhythmically tapping, or, (at higher RPM) banging.The pitch and frequency may change, fade or nearly disappear when you accelerate.These sounds are also called "engine knock," "spark knock," and "...

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What is a Knocking sound in the engine?

In general it is the valve lifters if it has higher mileage. Is the sound comming from the valve cover (usually it is the part of the motor that has the manufacturer name on it). It also could be much worse, if you are not sure take it to an auto tech. Another item to check: Could be the grade (o...

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Why wont the car start but it make a click sound when you turn the key?

Bad battery or corroded terminal connections. clean the battery terminals and cable connectors inside and out till you can see new metal, inspect the wires for green or white corrosion if you cannot remove it replace them. And lastly clean and tighten the connection at the starter

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What causes a rolling sound when you make a turn in your car?

You may have a wheel bearing on it's way out.

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What causes a rubbing sound to increase when you accelerate and decrease when you slow down?

If you are reffering to tires, the wheels spin faster than the car moves so the tires make a loud squeaking noise.

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When you start your car it sounds like an explosion?

That's because there are explosions.

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What would cause a whistling sound when you turn the wheel to the right while driving?

Common problem, easy solution, three possibilities only. Either, the power steering fluid is low or one of the belts at the engine need to be replaced or the power steering pump is worn and needs to be replaced. Check to see how much fluid is in the power steering pump, if full then replace every...

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When applying the brakes why is there a knocking sound from the drum brakes?

I would advise bringing your car to a mechanic as quickly as possible. Your brakes could fail. This puts you at a high risk for injury or even death.

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What causes the whining sound in car speakers when you turn on your wipers?

electrical interference

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What causes a knocking noise from the front of the car when accelerating but stops when braking?

The engines timing could be advanced to much.If it's a front wheel drive a CV joint could be going bad.Knowing a more precise area of where the sound is coming from might help to identify the problem.

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What would cause a knocking sound when making left or right turns in a rear wheel drive car that started doing this after the brakes and rotors were replaced?

more than likely to be loose wheel bearings in rotars Dont rule out loose wheel lug nuts

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Why does my car make a knocking sound when I accelerate?

Knocking Noise when Accelerating If your car makes a rattling noise when accelerating, it could be your engine is worn out with low oil pressure or piston slap.If your car makes a humming noise when accelerating, it could be an issue with a failing wheel hub or a drivetrain concern.

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What causes knocking under car?

The knocking sound often occurs when the air-fuel mixture is incorrect, which causes the fuel to burn in uneven pockets rather than uniform bursts.Left untreated, it can cause damage to the piston and cylinder wall.A knocking sound can also be caused by a lack of lubrication in the upper cylinder...

Read more

Why does my car make a knocking sound when I brake?

The knocking noise mentioned earlier is caused by the brake pads rattling in the brackets.Lightly apply pressure to the brakes while going over a potholed road.If the noise is gone, the pads are moving.To fix the rattling pads, buy a hardware kit with the parts needed.

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When you turned the key in your car to start it you heard a clicking sound What could that be?

There are a few possibilities: Low battery, either because the alternator isn't keeping the battery charged or the battery is old and has failed. Corroded battery terminals, usually an indicator that the battery is blowing acid fumes. Batteries usually don't last long after the terminals start to...

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Your Mazda 626 makes a squealing sound when you start the engine What is that noise?

Sounds like a slipping alternator drive belt. Adjust in accordance with manufacturers instructions.

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What if i hit a rock with my car--now it rattles and makes loud knocking sounds when i start it and in reverse?

Take it to a garage and have it put up on a lift for an inspection. It must have been a big rock!

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What would cause a car to crank then make a whining sound before starting?

Your girlfriend in the passenger seat after she realizes you drive a Toyota Tercel.

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1995 ford windstar Makes a grinding sound when started and worse when you turn the wheel?

Ah, the fine Windstar!! Have two of them myself. Just took one off the road and did the head gaskets on the other. Started her up and was the power steering was noisy. It had been sitting awhile, not quite a year and I don't remember it that noisy. Its not too bad straight driving but turning tho...

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What causes a whistle sound when you go speeds at 45 55 and 65 when you drive down the road?

The whistle sound is caused by air disturbances around the car, most likely near a window seal more than likely you either have a bad seal around one of your doors or windows or the doors are not shut all the way or your windows are not up all the way

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What would cause a grinding or rattling sound when the car is idling?

Could be the heat shield on the catalytic converterMay be a bad bearing in one of the belt driven accesories i.e.Water pumpAlternatorBelt tensionerIdler pulleyetc.

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Big sound from bottom of the car when you are starting your car?

that could be your exhaust is broken from where it starts or you bought a sports car that could be your exhaust is broken from where it starts or you bought a sports car that could be your exhaust is broken from where it starts or you bought a sports car that could be your exhaust is broken from ...

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What is the ideal RPM when a car is started and is just idling?

Normal operating temperature 650-750 RPM it should be between 0.5 and 1

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Can bad shocks on my car coause a knocking sound?

Yes, if your car has shock absorbers it would only be if they are broken in two pieces; if your car has struts then it is probably the upper mounts that are bad. If it is struts and you have the upper mounts replaced, you will also need an alignment.

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What can cause a tweet sound when the car is running?

Most likely alternator.Rub a bar of soap on the accessory belt(s), if the noise goes away, you need a new belt.

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When you attempt to start the Volvo 740 the starter just continues to spin without the car starting?

Well, the answer depends on if it's spinning freely or if it's turning the flywheel. In the case of the former, the starter needs to be replaced. In the case of the latter, it gets a bit more complicated, and a more in-depth analysis of what the car actually does as you attempt to start it is req...

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What would make a car make a loud knocking sound when idling and accellerating but not on deceleration?

I should note, I'm decent at car repair, and have recently (2000 miles ago) changed the entire top portion of the engine, and the transmission. It's a 4 cylinder `94 topaz. I'm thinking it may be a piston rod, but, am still unsure. and what you may need for your car is a tune job and for that you...

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Can a bad knock sensor cause knocking?

If the knock sensor is not working properly, you will likely hear sounds emitting from the engine.You may hear loud thumping noises that become louder over time.The noise is a result of fuel and air igniting inside the cylinder, instead of reaching the point of combustion.

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What would cause single Knocking noise when braking or turning?

A single knocking noise when braking or turning can be caused by a faulty axle. The cost of replacement is usually around 1,000 dollars.

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What would cause my car to sound like it wants to start but it just doesn't almost like its not getting gas?

Check your battery cables. Sometimes they get corroded. You can clean them with pepsi, or coke, and a toothbrush. Seriously- the acid in the soda breaks down the corrosion. Might also want to have your starter checked. It might be going out. In that case it will stop making any noise and all you ...

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When you try to start your car it just clicks - what is wrong?

It could be,a dead battery,loose or dirty battery connections,a faulty starter,

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What causes knocking in your car's engine?

The knocking sound often occurs when the air-fuel mixture is incorrect, which causes the fuel to burn in uneven pockets rather than uniform bursts.Left untreated, it can cause damage to the piston and cylinder wall.A knocking sound can also be caused by a lack of lubrication in the upper cylinder...

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What would cause a knocking sound in front driver tire when braking and turning left in a 2009 Chrysler Se bring?

Could be,loose lug nuts on front left wheel,a damaged left front brake rotor,a bad left front hub/bearing assembly,a worn/damaged CV axle joint,

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What causes a car to sputter when starting?

Bad or Dirt Spark Plugs or Fuel Injectors The next thing that could cause your car to sputter when starting is bad or dirty spark plugs.This is because it takes a spark to ignite the fuel to get the engine going and if the spark plugs are dirty, then it may not be giving enough of a spark causin...

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What is wrong when you try to start car and won't turn over and when you turn the key back off you hear a CLICK sound?

Sounds like you might have a battery problem. The clicking sounds are most likely the solenoid engaging and disengaging...there's probably enough battery power to engage your solenoid, but not enough to turn the engine over. You can check your lights, horn, etc., for evidence of a bad battery, an...

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What causes a car to knock while in park?

If the car is on and the knocking seems to be coming from around the engine, then the engine could be low on oil. You need to put oil in it immediately or run the risk of ruining your engine.You also could have a stuck valve or maybe your rod is knocking the rod will knock due to improper o ring ...

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What causes a rubbing sound when driving a car The sound does not happen when you turn the steering wheel to the left only to the right When driving straight not rub too bad. Tires are correct size.?

you may have a low tire or your tires are to big

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What causes a suburban to knock?

because their is no doorbell

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How do you identify the knoCking sound of a motor vehicle?

A experienced ear can usually identify the type of problem just by the sound.

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What problem could the knock sensor cause on your car?

If the knock sensor failed the CEL (Check Engine Light) would be illuminated and the engine may "ping" or "spark knock" under load. Serious "spark knock" can damage the engine if allowed to continue.

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Why is my 2003 ford expedition making a knocking sound when stepping firmly on gas?

That knocking sound could be any number of mechanical and non-mechanical noises. It is most likely in a vehicle that new, the noise you are hearing is not mechanical at all. Its called fuel knock, or more commonly known as gas ping. That noise is actually two different flame fronts in the cylinde...

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Why when you turn the key to start the car makes a clicking sound and doesn't do anything?

you should check the battery or the starter

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When it rains or you get a car wash your car makes a kind of squeaking sound that sounds like its coming from under the car and it only makes this sound for a brief time as you start going?

sounds like you need new belts Your brake pads could also be wet

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What causes a lower end knock?

Rod knock is caused by a severe failure of one or more crankshaft connecting rod bearings.Repairs require engine removal and complete disassembly at significant expense.The most common cause is lack of engine oil, this is usually the first part in an engine to fail when it runs out of oil.

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Why would a car make a knocking noise when it is started?

This sounds like the big end in your car is damaged and you should get it seen to asap otheriwse the emgine could completely sieze up. It could be the headers, the fuel you used, the engine rods. Most likely it is bad gas, but check the gaskets covers too. You don't have any oil!!!

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What is wrong when a relay is clicking on a 1999 Camry and the car wont make a sound when you try to start it?

Possible battery, starter or connection problem.

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What causes a knock sensor code?

P0325 Causes This failure code can be caused by the sensor itself, the engine controller, or the wiring between the two, including the connectors.The P0325 code could also be caused by other conditions with the engine that is causing extreme knocking; however I would consider these secondary.

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What would cause the front right wheel on your 1998 Ford Ranger 4x4 to make a ratcheting winding sound just before you come to a complete stop?

The ratchet winding noise on the Ranger 4x4 could be a wheel bearing or brake issue. There could also be problems in the front differential. Check all three for any problems. The 1998 Ranger noise is most likely coming from a brake grinding against a rotor, or a bad wheel bearing. Either of these...

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What would cause a knocking from tire when hit a bump?

The knocking could be from loose brake pads, loose wheel nuts, tie rod ends, or ball joints. Depending on the severity of the "knock" ( Pads usually "clack") If the knock is from the back the same applies (kinda)

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What would cause a roaring sound when the ac is on in a 1999 Ford Explorer?

Could be clutch cooling fan engaging

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What causes my car to sound like an ambulance when i turn on the A.C.?

The ac compressor is probably seized up or seizing up. Don't run the ac any more until the system is repaired. If the compressor fills the system with trash (if it hasn't already) the cost for repair will be very high.

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What is wrong if your Mercedes 280sel will not start and you do not hear any sounds from the car when you try to start the engine?

Clean the battery cables first.

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What causes a car to ut out after starting when you apply revs?

Well this could be a lot of things. The most common however, if its an older car, is that you have dirt on the throttle plate of your intake. I would take off your intake and clean it or use some carb cleaner to clean it out. The Second most common is a bad sensor. Unfortunately, there are many s...

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What would cause a car to start and when you shut it off it wont restart?

a mechanic told me it could be the neutral security switch on the clutch if it is a straight drive

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What causes car to let off a screching sound when brakes are being mashed?

Screeching can be caused by two things and both indicate the brakes are worn to the point of needing replacement. The brake pads have rivets in them to hold them together and when they wear down to the rivets the rivets screech. The other thing is on disc brakes there is a wear sensor that drakes...

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What causes knocking in the front end and it goes away when step on the brakes?

Front Wheel Drive, could be bad CV Joints, Could be Control arm Bushings...

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What would cause a grinding or rattling sound when accelerating from a stop or when turning?

if its a front wheel drive vehicle then it could be the axels

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Why does my car sound weird when I start it?

Most car noises come from the engine, belts and pulleys, hoses, exhaust system, tires, suspension system, tire to pavement contact, braking and aerodynamic interference.A car noise may be an early signal of an auto system or component failure.

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What causes a start up knock on your 1994 ford crw vic i only have 95000 miles on the engine?

This noise is very common on the Ford 4.6L SOHC engine due to air entering the oiling system especially after long period of sitting with engine off ore replacement of oil filter or worn engine or faulty oil filter. The engine can start and run for several seconds without adequate oil pressure. T...

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What causes your car to make a squeaking sound when backing up?

Could be brakes or if rear wheel drive could be a "U" joint going bad

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What would cause a grinding sound when your car is taking off from first gear?

you may not be pushing the clutch all the way in or the cluch may need to be adjusted

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Van has loud knocking sound when idiling sort of goes away when reved up?

my camaro did the same thing...at first i thought the engine was going...it turned out to be the torque converter on the transmission. which would be good news in your case....way cheaper than buying another engine. take it to a tranny shop they will tell you for sure.This could also possibly be ...

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On 2000 dodge durango you just installed radio no sound is coming out when on CD?

You might have the wires mixed up or wrong wiring harness. stereos are picky these days

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What causes the transmission in your 1997 4 wheel drive Nissan to knock when you let off of the clutch?

a chipped tooth on a gear need a little more info like is car sitting still in neutral knocking or moving e mail me

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What causes pinging and knocking?

Engine knock or pinging is knocking in spark-ignition internal combustion engines occurs when combustion of the air/fuel mixture in the cylinder does not start off correctly in response to ignition by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the ...

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What could cause your car to not start and have no other sounds?

it depends on the year of the car, but on some older American models there is a relay switch (about a $3.00 part) that goes out and makes the car appear "dead". most back yard mechanics will insist it's the battery or alternator, but if your car has a relay switch I would spend the couple of buck...

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