I have a '98 RAM 1500 5.9L V8, and the engine hesitates when cruising at
45-50mph. It is fine under acceleration, and other speeds, but feels as
though it is misfiring at 45-50mph. It isn't though.
It has had new leads, plugs, distr,...tested by the local garage who can't
find anyything on the diagnostics.
I've used engine and injector cleaners but they don't help.