Q: my son has spun the bearings in his 2006 Mercury Mariner, what engines are compatible for a swap

I would have the battery tested by a certified technician such as one from Your Mechanic. It sounds like the battery may be dead (https://www.yourmechanic.com/services/battery-is-dead-inspection) but they also need to determine if the charging system is working correctly. (https://www.yourmechanic.com/services/battery-will-not-hold-a-charge-inspection)

There really is not a time limit. Once most of the refrigerant has leaked out of the system, the compressor will not turn on (https://www.yourmechanic.com/article/how-long-does-an-ac-compressor-last). There is nothing you can do to turn the compressor on from inside the car....

Try rotating the tires to see if the tires have a small flat spot. If the noise moves to the front then replace the tires. If the noise stays in the back then have the brake rotors (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-brake-rotor-disc) resurfaced or...

Is the Check Engine Light on? You checked the fluid quality, but was it at the proper level? A shifting malfunction can sometimes be caused by a low transmission fluid level (https://www.yourmechanic.com/services/transmission-fluid-service) from a leak or a failed electrical component...

It does appear as though you will need to remove the intake manifold. My information system doesn't give specific instruction for the oil cooler hoses, but it does give information about the oil cooler. This sort of situation isn't out...

If your expansion valve was stuck in the open position then you may not see much, if any, change in pressures. Before replacing the expansion valve I would recommend you remove the compressor inlet line and turn the compressor by...

The fuse for the level control compressor is located in the under the hood fuse block. It is a 40 amp fuse number 61. There is also a relay between this fuse and the electronic suspension control module. In addition...

The flatness of the block (and heads EVEN if they are "new") has to be measured. If the block was warped, that is if the block is not perfectly flat across the entire surface to within .002 inches, the assembly...

Hi there. The battery is beyond charge and needs replaced. After replacing the battery, you would need to check for a parasitic load on the vehicle to see why the battery lost power. Disconnect the negative battery cable and put...