On my way home for lunch today I had the wonderful surprise of having my
throttle stick open at about 3500-4000RPM.  While this made for a nice
cruise control effect while underway, it is quite unnerving when I push in
the clutch.  My guess is that after washing the undercarriage last weekend,
I have some water in my accelerator cable that is freezing (it was 4 degrees
F this morning when I got in the van).
How much of a pain is it to change out the accelerator cable?  I am guessing
that you just crawl underneath and drop the spare, look up, and things will
pretty much explain themselves?  Any guesstimates of how long this will take
to fix?  If it is a quick fix, I will most likely do it in the driveway,
otherwise I am going to have to find some heated garage space...
One other thing, I have the part # for my '85 listed as 251 721 555Q, is
this the p/n for the "new teflon coated" cable that is mentioned in the
archives?

                                                Thanks in advance,
                                                Jay Brown