Two problems related to transmission noise have been reported for the 2004 Mercury Mountaineer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Mercury Mountaineer based on all problems reported for the 2004 Mountaineer.
I purchased a 2004 Mercury Mountaineer first the rear liftgate plastic broke and theres a crack by the emblem on some ocasions when put in reverse it makes a loud bang noise or when starting to accelerate but the biggest problem is that on the highway up to 50mph and over there seems to be a rattle under the engine and it gets louder when mph is higher im not sure what it is but im really worried that it maybe a transmission problem and if this problem isnt recalled me and my family plus others are in really big danger its a family car so im starting to worry for my family and there safety these vehicles need to go on inspection and soon so these dosent lead to any accidents.
While driving at 35 mph and above experienced noise in transmission chain. Returned to dealer and they are ordering a gear for the rwear end. Am awaiting approx a week for delivery to schedule the replacement of the gear.