In the last two weeks my shop has seen 3 '98 to'00 Explorers do the same thing. When we would take a snap shot of the computer data, the computer clock seemed very slow. The fix on all three ended up being a new PCM. Also on the 4.0L w/ overhead cam has been known to have leaky intake manifold gaskets.
Edited by easymoney on January 22 2005 at 6:29pm
