Mercury Mountaineer Shuts Down While Driving (Common Causes)

If your Mercury Mountaineer is shutting down while driving, it’s a real safety hazard.  Vehicles are a lot harder to control without power brakes or steering.   Mercury Mountaineer Shuts Down When Driving: Top Causes Directly below is a list of the most common reasons why your Mountaineer would randomly die while driving.  It may … Read more

Mercury Mountaineer:  Brake Lights Not Working Diagnosis

Brake lights are one of the most critical safety features that your Mercury Mountaineer has.  They let other drivers know when you are slowing down, and that they need to slow down too.  If your brake lights aren’t working, you’re way more likely to get rear ended than normal.  The good news is that troubleshooting … Read more

Mercury Mountaineer Dies After Starting Diagnosis

It can be very disconcerting if your Mercury Mountaineer is starting and then dies.  It is most likely caused by some type of issue with the electrical or fuel system.  But, there can be other causes as well. Your Mountaineer’s engine needs 3 things constantly and in the proper proportion to keep running. Air Fuel … Read more

Mercury Mountaineer: P0171 and P0174 Diagnosis

P0171 and P0174 both indicate that there is a lean condition present in your Mercury Mountaineer.  By themselves, these are some of the most common OBD2 codes.   When they appear together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning … Read more