Nothing.
Great truck "BUT" I purchased it new in August 2002. It is a 4x2 Regular cab XLT with 2.3L 4 cyl. It is a great truck and other than a Rhino spray in bed liner I have done nothing to it. The only problem I have is the rear likes to dance on rough roads, this is normal due to the lightness of the rear and it being sprung for a heavy load. The only thing I wished Ford had done was to make the limited slip rear available with the 2.3L engine. I live in Minnesota and this would be a great help in the winter snows. Other than this I believe it is a well designed and put together truck and I will be owning it for many years to come.
I am also puzzled as to the unavailability of the limited-slip differential on the four-cylinder Ranger. Chevy offers it on the four-cylinder S-10 and Colorado--why can't Ford?
I ended up equipping my 2002 2WD Ranger with a 3.0 V6 to get the limited-slip. Combined with the anti-lock brakes and the second-gear start feature in the automatic transmission, it's really easy to drive in the winter here in Michigan. It's never gotten stuck once. I love it!
It does bounce an awful lot. The supercabs are even worse. Wonder if a heavier toneau cover would help.
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