Without the year, make or model of your vehicle it could be a bad compressor and or a bad compressor clutch.............
What causes ticking, check engine light, and the check gauges sensor to come on in a 1999 Dodge Durango 5.2L SUV?
1995 concorse is making a ticking noise under the glove compartment
have found that a ticking noise on the passenger side (under the dash) in the heater b5pdox (you can feel the vibration) on a 1997 town car is probably a vaccumn control switch.
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.
Noise valve lifters perhaps. If the problem persists, you should be taking this back to the dealership - this might fall under warranty repairs.
sounds like a bad lifter, let the dealer fix it as it's under warranty.
the ticking is the blinkers
There is a baby under the hood.
If the ticking is coming from under the dash. It's probably your fan housing, or a misaligned fan. You will have to get to the fan and either replace the fan, or move any obstacles that may be hitting the fan.
I also have a 2002 Mustang GT with a bad PCV valve. It made a ticking noise while the motor was running then ticked for 3-4 seconds after it was turned off. A way to test if it is a bad PCV valve is to remove it and see if the noise stops. It is in the right head just under the intake hose. Lift it out and if the noise stops there is your problem. It's a five dollar fix.
If you're experiencing no heat along with a ticking noise under the dash, it could indicate a few potential issues. The ticking might be caused by a malfunctioning blend door actuator, which regulates airflow and temperature in the vehicle's heating system. Additionally, low coolant levels or a clogged heater core could also lead to insufficient heating. It's best to have a mechanic diagnose the issue to ensure proper repairs.
A ticking sound and smoke under the hood can be caused by several issues, primarily related to the engine. Common culprits include a failing valve lifter, loose components, or a worn timing belt, which can create a ticking noise. Smoke may result from overheating, oil leaks, or coolant leaks, leading to burning fluids. It's crucial to address these symptoms promptly, as they can indicate serious engine problems.