If you hear a pinging or rattling sound when accelerating, low-octane fuel could be the cause. Pinging (also called pre-ignition or detonation) can also be the result of carbon deposits, a bad knock sensor, overheating or incorrect ignition timing.Click to see full answer. Also know, why does my car make a rattling noise when I accelerate?You usually hear this noise when accelerating the vehicle. Most people call this a pinging or rattling sound. This noise is caused by an air/fuel mixture in the engine cylinder being ignited prematurely by the heat of compression as the piston is moving up on the compression stroke.Also, why does my Jeep rattle when I accelerate? Any rattle under acceleration, is most likely related to the exhaust. Just get under the Jeep and man handle the different parts of the exhaust until you can reproduce the sound. Don. t forget all those heat shields that may be rubbing up against it too. Similarly, it is asked, how do I fix a rattling noise when I accelerate? Rattling noises when accelerating can be caused by low fluid levels in the A/T. Open the hood and check the fluid level. If the car is running low on transmission fluid, refill the reservoir to the proper level. After doing this, start the car and take a short test drive to see if the problem goes away.How do you fix a car rattle? Rattles are usually caused by missing or loose screws and clips that hold interior panels in place. Determine the source of the rattle while driving. Park the vehicle and verify that all of the screws that hold the interior panels and trim are installed and tight around the area where the rattle is coming from.