It's more of a gravelly rattle from under the car - not really a vibration in the wheels/steering. Car Makes Rattling Noise When Accelerating? 5 Causes and Fixes | Junkcarsus And you dont want to be in a moving car when your transmission goes out. Engine mounts connect your engine to the car frame and keep it stationary. If you ignore this rattling noise for an extended period, it will cause catastrophic damages and drop expensive repair bills on the table. However, ignoring the noise for an extended period will cause catastrophe in the transmission. Hot engine rattling on my Citroen C1 If any of this happens, the shield will dangle as you drive, causing a rattling noise. With an exhaust leak, the muffling of the noise is cut short, making the noise louder. Both could cause secondary problems that will do serious damage to your bank balance. Engine is Rattling? Here's What You Need to Know My Car Makes Rattling Noise When Accelerating [Why Is That? If the noise is still there, even though the RPM has dropped substantially, the sound is not coming from the engine. Piston Slap #3. If you hear a, loud rattling noise coming from the engine when accelerating. You will need to identify if this noise happens suddenly and if it can stop as it started. Bad Catalytic Converter #2. Citroen C1 slow acceleration causes and how to fix it Rattling noises from underneath a vehicle are extremely common. But thats if youre lucky. In the USA the 2.5L G engine does have the SkyActiv technology if that's what you are referring to. A Sound Like Pebbles In A Dryer When You Accelerate. A roar could be a frightening thing. The pulley in question is the one on the outside that drives the Auxiliary belt - it is a rubber sandwich job, and the outer lets go of the middle. A lack of lubrication can also affect the rest of the valvetrain in the same way, with rocker arms, pushrods and valves clanging around the engine due to oil starvation. A Tapping / Ticking Noise From The Engine on Acceleration or When Cold ! Inspect the exhaust components for rust, corrosion, worn-out parts, and disconnected clamps. And it is dangerous to drive a vehicle that is not running as it should. A damaged heat shield can be welded back into place, but its likely that if its damaged to the point of rattling, the metal is very thin. You have to inspect the exhaust system to find out if heat shields are causing rattling noise in car when accelerating. If it particularly happens when you accelerate the engine, you can pin down the problems on common failures of several components. The speed of these pulleys escalates with the engine speed. It could be the catalytic converter, the engine mounts, transmission issues, a sticky valve train, or damaged heat shields. It might mean something as simple as topping up your transmission fluid or lifting up the entire engine to replace the engine mounts! Come join the discussion about performance, modifications, troubleshooting, purchasing, maintenance, and more! This in turn makes audible noises. When the rubber becomes. Here are common reasons why a car rattles when accelerating. In any of these cases, head over to a mechanic for a proper diagnosis. If, on the other hand, you do not feel any power loss due to an humming noise on your Citroen C1, it is more than likely that you have one of your junctions or air hoses that has holes. If the rattle is pronounced at low speeds, and then disappears when you accelerate, you could have lost a lug nut inside your wheel cover. The exhaust system includes the muffler, resonator, catalytic converter, and header/down pipe. Rxmechanic.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon.com. Theyll be able to tell you what and how much in no time. If the mounts are damaged, the engine will feel as if its bouncing off. The pistons are what move up and down and make the engine spin. When friction and grinding occur, the engine emits knocking, rumbling, clicking, and rattling noise. Considering how simple most of the fixes are for these unwanted rattles, standard maintenance checks should see you and your car experiencing many years of smooth motoring. Knowing about them will help you with quick diagnosis and finding the correct fix before it gets worse. Engine noise on the Citroen C1 How severe the consequences of ignoring this rattling and continuing to drive will depend on whats wrong. And do it sooner rather than later. However, the noise will become louder or more noticeable as you accelerate the engine. Open the head cylinder cover and inspect the valve train components if oil is not the problem. I have a terrible sounding rattle (gravelly?) The truth is, the vehicle may not keep you stranded in the middle of nowhere once you start hearing the rattling noise. It will be a faint sound when the car is idling in park mode, but the volume and frequency will increase in proportion to acceleration. Does it rattle and then start to slap like a flat hand against your leg when you accelerate? The exhaust system consists of several parts that work together to reduce exhaust noise and makes the toxic exhaust gas less harmful before sending them into the environment. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'carproper_com-leader-1','ezslot_11',818,'0','0'])};__ez_fad_position('div-gpt-ad-carproper_com-leader-1-0');The squeaking or chirping rattles could also mean one of the drive pulleys, like on the water pump, may have slipped and become misaligned. Probable Cause: Failed outer CV joint. Known as a tappety engine, what causes this frustrating and potentially destructive noise? I also work for a digital consulting agency. Fixing a transmission rattle will take some time because it will likely need to be removed and inspected to see whats happening inside the transmission housing.