Yoicks! Problem!

["'*Tess*' Teresa A McMillan" <tessmc@u.washington.edu>]

My car all of a sudden will not pull more than about 1200 rpm.  This
happened ALL OF A SUDDEN!!!!!  (The day after we cleaned the engine.)
Any more than this and she charges and stalls, charges and stalls, but
actually the charges aren't really charges cuz there's no power.  It will
idle along fine in 1st or second gear as long as you don't put in any
throttle.

We disconnected the connecter at the pressure regulator on the fuel
control unit and it runs fine!  So the question:

Is the pressure regulator at fault?  Is the thermo time switch at fault?
(My BF is dictating this question to me, by the way, I didn't come up with
these terms on my own).

The big news is I was supposed to be running in a track event on Saturday.
&:-(      HELP!!!!

TESS