The engine cover is probly not tightened down. It has to be removed to get to the oil filter on that car so probly an improper re-installation.
There are a number of causes for a rattling noise that occurs in a car. These include low oil and an engine that is faulty or going out.
No
no oil
A 2006 Kia Sedona will exhibit a growling noise from the engine if the serpentine belt is loose. It can slip against the pulleys and produce a persistent growling noise.
A rattling noise when starting the engine can be caused by several factors, including a loose or worn timing chain or belt, which can create a metallic sound. Additionally, insufficient oil pressure at startup might lead to noisy hydraulic lifters or valvetrain components. Other potential causes include loose engine mounts, a failing starter motor, or issues with the exhaust system. It's important to diagnose the source of the noise promptly to prevent further damage.
The guy in the trunk is still alive!!!
Possibly a loose heat shield or other component.
Vanos
A rattling heat shield typically should not trigger the check engine light, as it is more related to exhaust system noise than engine performance. However, if the rattling heat shield causes damage to other components or leads to a fault in the exhaust system, it might indirectly result in the engine light coming on. It's advisable to inspect the heat shield and any related issues to prevent further complications.
Check the cover on the catalytic converter or it could be the throw out bearing
Is the oil lever OK ? Also get a compression check in each cylinder to see if one of the piston rings have worn out.
Many different things can cause a rattling noise in a Mazda tribute. Stark by checking the engine belts and all brackets for anything that could be loose and causing a rattle.