Ah, such kind words, and to elevated to guru status at last <grin>. I'll
mention it to my sensei. But back to the problem at hand ...

There are several possibilities.
- check for cracked or broken vacuum tubes on the throttle body. Most likely
problem to start with.
- is the CEL on, if so what error code(s) are being output?
- cold start is affected by the coolant temp sensor. Check that the
connector/cable is not damaged, and that you have +5V (not +12) on one side
and (0V orGND) on the other. The ECU may be reporting a sensor problem.
- the throttle body probably needs cleaning with one of the aerosol
products. Can't hurt.
- the Idle Air Control motor on the throttle body may have damaged itself
internally. There are some plastic gears that chew themselves up if the
throttle body gets gummed up. Motor coils can also fail. Usually the ECU
reports an error.
- check the timing
- check the throttle body adjustment for the idle speed. This is a large
Phillips screw hidden in a tube structure on the top or side of the throttle
body. There may still be a 10mm black cover over the screw. DO NOT adjust
the external screw that sets the throttle closed. position.