My 2005 Hyundai Elantra makes a loud noise under the engine while accelerating.

What is your question?

My 2005 Hyundai Elantra makes a loud noise under the engine when accelerating. There is no engine light on. It has new spark plugs, air filter and upper 02 sensor. It vibrates at the stop light. What could the problem be or solution?

What makes this problem better or worse?

Accelerating makes it worse

How long has your 2005 Hyundai Elantra had this problem?

One month