One problem related to engine clicking and tapping noises has been reported for the 1998 Plymouth Neon. The most recently reported issues are listed below.
While driivng the vehicle a popping sound came from the right front end of vehicle. The driver would also get a vibration when using the gas/ brake pedal. Dealer found that the strut mounts and shocks were lo0se. There was also a lack of lubrication on the ball joints which caused the noise and vibration. Problem has been corrected.