Q: My husband just finished changing the spark plugs to our 2008 for Expedition and it won’t turn on now. Please help

This issue is most commonly caused by the driveline shaft's slip-yoke and splines. It is caused by the two piece driveshaft slip joint binding up when the two shafts slide in and out of each other. This will mainly occur...

Hello, Since you have covered the basics of checking fuses, I will assume that all the other lights illuminate including the high beams. Believe it or not, it is possible for both low beams to burn out at the same...

It is possible that the new catalytic converter is bad (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-catalytic-converter). Sometimes, when the converter comes apart inside, it can get into the muffler and cause it to be clogged.

Hey there. There are small vent doors within the ducting of the of the A/C and heater vents. Sometimes these doors will get stuck open or closed at times depending on how they are controlled. Your model year should have...

Hello. The stopper assembly is an essential, required part (the "stopper" is not a cosmetic cover). If the vibration started after you installed the aftermarket mount, the cause of the vibration is the aftermarket mount and you should remove it....

Hi, thanks for writing in. I suspect your "upstream" sensor is the primary problem, and should be replaced. The downstream sensor you did replace is really measuring whether the catalytic converter (the main cat, not the pre-cat) did the job...

This may be a sign of a failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected into the...

Advising you is hard because consumer rights vary somewhat from state to state (I don't know what state you are in). If you were in Ohio and they did what you are describing, the dealer would have significant "problems" both...

You most likely have low coolant in the system and need to purge the air out of the cooling system. Have the cooling system checked and purged of air then test the heater again.