My car has been getting random cylinder misfires. Ive cha...


My car has been getting random cylinder misfires. Ive changed coils and [spark plugs](/topics-spark-plug-chevy/). It only does it maybe once a week, my car will get shaky and light will come on but then goes off. Outside of this, ...

My car has been getting random cylinder misfires. Ive changed coils and [spark plugs](/topics-spark-plug-chevy/). It only does it maybe once a week, my car will get shaky and light will come on but then goes off. Outside of this, my car is also making a grinding noise when im accelerating from a stop and stops after I speed up and gear shifts. My car is hesitating or I guess the term is feels like its slipping when changing in low gears. The rpm sometimes goes high before t&e gear shifts. Its automatic transmission. I also sometimes hear a sloshing bubbling noise when accelerating from a stop. Mechanic's Assistant: How many miles are on the Chevrolet? Is it the original transmission? 2017 hyundai elantra. 118,000 miles. Mechanic's Assistant: Are you fixing your Spark yourself? What have you tried so far? A mechanic changed the coils and spark plugs. It didn't fix the problem

Automotive Expert
Hi there, Sorry to hear about all your car troubles. My Name is \*\*\*\*\* \*\*\*\*\* I am an ASE Master Tech here to assist you with your vehicle. Please understand I am not there with you, But I am here to help. Any information about what is going on is greatly appreciated. The system will ask for a phone call, Please let me know if you want this option as I am not always available to do so. Be aware that I am assisting many customers at the same time and will get back to you as quickly as I can but I cannot get answers immediately as I am not a computer. I like to research each answer before I get back to you to ensure that I give out the correct info. Thank you for understanding. This will most likely be two separate issues. I can only assist with one issue at a time. What issue would you like assistance with first?

The grinding sound and hesitation with accelerationThank you for your time and help
Automotive Expert
For the grinding sound you will need to know where the noise is coming from and how to duplicate it. This will be separate from the acceleration issue. This may be a fault with your catalytic convertor. What fault codes are you currently getting? Please list them all or take a screen shot of the code reader.
Automotive Expert
Have you read these fault codes yet?

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