A thumping heard and felt in the floor is often caused by failing engine mounts. A failing mount allows too much movement of the engine, and will require replacement.Google+
Car Problem Reports
Nissan Murano Failing Engine Mounts Will Cause Thumping in Floor
Nissan Murano Problem
Average Mileage: 89,826 mi (13,000 mi - 243,000 mi)
I have a 2007 murano that I have had a problem since it was under 36K. It has a drone in the motor when under a load at approx. 1500rpm and 40mph. You can feel a slight vibration in the drives compartment and in the pedals. I have been to 3 dealerships and it is currently at the forth for repairs. I have been told to replace the tires, exhaust and trans. fluid. nothing has fixed the problem and I have been told the the motor mounts are more than likely the problem but it is a $1500.00 guess. I do not feel that a vehicle of this price (fully loaded) should be having a problem like this with such low mileage.
Visitor, 2006 Nissan Murano, 68,000 mi
I felt thumping in the floor board also vibration and loss of power I did have the moter mounts fixed and paid $625.00, is this a fair price?
Visitor, 2005 Nissan Murano, 75,000 mi
Complined to dealer of clunk or thump heard in front and felt in stearing column on hard acceleration from stop. Dealer advised three motor mounts cracked and need repair.
Visitor, 2007 Nissan Murano, 93,000 mi
I've had the exact same problems as everyone else and I'm sure they are aware of the problem but my question is, why haven't they did a recall on these things? I love my Murano but after this I will never purchase another one new or used. I love Nissians period but next I think I'll try Honda!
Visitor, 2004 Nissan Murano, 243,000 mi
Same thump when you accelerate and vibration in steering
Visitor, 2006 Nissan Murano, 45,000 mi
Motor mounts replaced under my Nissan Extended Warranty
Visitor, 2005 Nissan Murano, 55,000 mi
Everyone... Go to Rockauto.com. Dirt cheap prices.... Motor mounts were extremley cheap as well as other parts i had to purchase. Lower right and left arm were damaged as well and they cost about a 3rd less than dealer or autozone....
Visitor, 2004 Nissan Murano, 114,000 mi
I had a "knocking noise' when accelerating. My mechanic is working on it now and says 2 mounts are damaged. They quoted over $700.
I have noticed a subtle vibration on the floor and rough idling in my 2007 Murano S (FWD). I had one front motor mount replaced under warranty by the dealer at 34,000 miles. After reading similar complaints on this web site, I think new motor mounts are needed.
Visitor, 2007 Nissan Murano, 131,000 mi
My 2007 Murano S (FWD) had one front motor mount replaced under warranty by the dealer at 34,000 miles. However, I can feel a thumping and vibration under the floor and suspect it's my motor mounts judging by this web site. My car's mileage is 131,000 miles. I do agree that cracked driver seat frame and a failing power steering pump are common issues that also occurred in my car. Otherwise, I have been happy with my Murano.