The are a few reasons why a vehicle could make a clanking noise upon cranking. The oil level could be low. A hydraulic lifter could be stuck causing the engine to flood. The spark plug wires could be crossed. It could even been a weak battery.
motor mount
could be the rear strut bushings are bad.
There can be several things that will cause your 1994 Jeep grand Cherokee to make a loud clanking noise when you drive it. The most common cause is a bad u-joint.
what is the difference between shaking a chain and clanking it
A loud clank noise when starting your 1999 Mercury Cougar could be caused by several issues, such as a failing starter motor, a loose or damaged flywheel, or issues with the engine mounts. The starter may not engage properly, leading to a clanking sound as it tries to catch the flywheel. Additionally, worn or broken components within the engine or transmission could also contribute to the noise. It's advisable to have a mechanic inspect the vehicle to diagnose the specific cause.
The loud noise from the AC when turning off is often caused by the sudden release of built-up pressure in the system as the compressor shuts down. This pressure release can create a loud "whooshing" or "popping" sound.
Why should I know?
When an air conditioner makes a loud noise when turning off, it could be due to the sudden release of built-up pressure in the system. This can cause components to vibrate or move, creating the noise. Regular maintenance and checking for loose parts can help reduce the noise.
ball joint or tierod end
If it is a thumping and a front wheel drive car, it is probably one of the axles.
Your furnace may make a loud noise when turning on due to issues such as a malfunctioning blower motor, loose components, or a clogged air filter. It is important to have a professional inspect and repair the furnace to prevent further damage.
If the sound is a loud growling , whining, noise you're probably low on power steering fluid. Now the cause of the fluids loss is WHERE ?