A few days ago in my 2000 XLT, I noticed my tach was jumping around
while on the highway at around 65 MPH. The engine wasn't surging so I
didn't think too much of it. The following morning about a half hour
into my morning drive I lost all acceration. I was able to get the
truck off to the side and looked under the hood for a bad harness
connector. The idle would surge between 0 and 500 rpm and any gas
pedal at all made it choke. Finally I stomped the gas to the floor
hard about 5 times and it picked back up and seemed to run and idle
alright.

Today, it's doing the same erratic power loss thing. The tach seems to
drop out when it happens. Has anyone else here had a similar
experience to this? I really hate to start blindly changing out
ignition parts to chase an intermittent problem.