Clicking noise at low speeds on 1999 Volkswagen Jetta

When I drive my 1999 VW Jetta, with AEG engine, there seems to be a clicking noise from the engine. It sounds to me that the engine is missing on a cylinder as it only makes the noise at speeds lower than 30 mph. When I accelerate quickly or maintain a high speed the sound goes away. I have replaced and re gaped the spark plugs and replaced the wires, next for me would be the coil pack. Would this be the way to go?

1 answer 1 comment
The coils on these are problematic, but you should have a check engine light on, and probably flashing if a coil is bad. Is the light on?
I do not have an engine light on but I have ordered a coil pack. It is original to the car so it is amazing that it has lasted this long. Thanks. I will let you know if it works!