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I have a 99 Ranger 4.0L and both of my heads cracked. I replaced the heads, but I believe I clogged my precats due to fouled plugs. My Ranger has precats on each side of the exhaust manifolds. This then ties together and then there are two more cats before the muffler. My pricing on the...

Hi all,, I have about 90K on a 97 Explorer 4x4 and have noticed, since I sat in the back seat, there is a low whine to the rear end as speeds increase so does the noise. The rear end has a small seal leak so I check it every now and then to make sure it says full. I use synthetic gear oil...

I have 97 4x4 explorer and the front pinion seal (where the front drive shaft enters the differential) leaks when 4-wheel drive is engaged. How difficult is it to replace this seal ? Is there a article on this board on to replace these seals ? Thanks very much!