A loud ticking noise in a 1995 Plymouth Voyager could indicate several issues, including a faulty lifter, low oil pressure, or a problem with the timing belt or chain. It's essential to check the engine oil level and condition first, as low oil can lead to valve train noise. If the oil level is fine, the ticking could be from worn engine components, and a thorough inspection by a mechanic would be advisable to diagnose the exact cause and prevent further damage.
The ticking noise could be worn out rocker arms under valve covers. Switch to heavier weight oil if ticking noise subsides that could be your problem. This is usually a sign of a high mileage engine. Worst case scenario would be weak oil pump not getting oil to top of heads.
On our California model it is a smog device...
Perhaps heat shield on catalytic converter?
The fuel injectors make the ticking noise you hear at startup, especially when the engine is cold (colder temperatures).
Broken or rusted out exhaust system.
the ticking noise is a small exhaust leak close to the exhaust headers or exhaust pipe near the engine.
lifters
if ticking noise is in engine, u most likely have a worn hydraulic lifter. check oil for correct volume and viscocity
Loose, or worn out.
Try to locate the ticking noise. Is it the engine? Is it ticking when you are driving? When you are sitting still? It could be as simple as a stone stuck in yoru tire, everytime it hits the road it ticks. it could be a lifter in the engine. Try to be more specific as to where and when the ticking happens.
from which part of your engine is the ticking noise coming from. if is the TOP it would most likely be lifter noise.try using a thicker oil.
It is located on the engine block. A knock sensor will very seldom give a problem. It detects engine noises and retards to timing. If you have a code then you need to find the noise and repair it.