Re: 1992 explorer
it's got 180,000 on it and the transmission has already been rebuilt.
(about 25,000 mile ago). There is no ping and so far it's been a good
runner. when I'm around the 55 mile per hour range it acts like it's either
getting a gas hesitation or a spark hesitation. The plugs were changed
about 6,000 miles ago and the fuel filter was changed at the same time..