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

Mercury Mountaineer:  Clutch Slipping → Diagnosis

Your Mercury Mountaineer’s clutch provides a direct connection between the engine and transmission.  Without it, it can’t move at all. This connection requires a tremendous amount of pressure.  This guide is intended to help you determine why your clutch is slipping on the flywheel. Note:  This article is for manual cars only.  Here’s the automatic … Read more

Mercury Mountaineer Shifting Hard: Causes + Diagnosis

One of the most common automatic transmission problems is shifting hard.  If your Mercury Mountaineer has a hard shifting transmission, it can be uncomfortable to drive and a sign of serious problems. If your vehicle’s transmission is shifting hard, it can cause a harsh ride and lead to potential damage over time. Numerous factors can … Read more

Mercury Mountaineer:  Warped Rotors → Symptoms & Causes

  Rotors are metal discs that are visible behind the Mountaineer’s wheel. They work together with the calipers and brake pads to slow down your Mercury Mountaineer. Due to braking friction, rotors have to withstand and dissipate a tremendous amount of heat. This causes the rotor surface to be uneven making the brake pedal feel … Read more