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.
There's a ticking noise under my 2002 tahoe. If it is a lifter. Can you tell me what a lifter is? And is that the reason why my service engine light won't go off. Someone told me that it had to do with some box that holds wires under the truck. Is that true?
check to see if it shakes in drive and reverse. If it does have the motor mounts checked out they could be broken Sounds like you may have a bad spark plug wire,the ticking noise you hear may be the spark arching to the block or cylinder head. Open the hood at night and look for blue sparks jumping across the wires.