hesitation after startup, slight missing

["Chris Dyer" <chrisdyer@hotmail.com>]

My '87 5kcstq w/146k mi is has the hiccups!

After starting cold in the morning (about 55 deg.)is fires up great, but 
will hiccup if I try to drive away--I need to let it run a couple minutes, 
then it's fine.

Then, when I start it cold after work to go home, it fires up great, then 
stutters and sometimes dies!!  If I blip the throttle for a minute, it'll 
idle ok.  It's like clockwork--idle w/slight hesitation in morning; 
cough-cough-choke at 5:30pm.  WEE-RRd!

Last, full throttle is a wee flaky--sometimes I'll feel a slight hesitation 
when turbo hits 1.1, like a soft governor or something, then it may/may not 
go up to 1.2/3 after a certain rpm (around 4000). At least w/my '66 Caddy, I 
can chalk it up to a carb adjustment.

I put the "rant" in ignorant, so here's my quetions: can I replace the WOT & 
temperature sensors? i.e. are they separate parts?  How much do they cost?  
What's the best way to adjust the mixture?

t.i.a.
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