Simple ISC question

[fixkick]

edited.
that's good, the isc closed (by hand) on a hot engine, there is no more air supply at all now. only the bleed screw, so it stalls.
some cars run at 600rpm, and that is wrong.

there are only like 5 checks ( 5 with A/T) HOT engine, 180F or more, 4 with 5sp
1: above
2: turn on all electric loads. no drop. (can blip) holds 800...
at all times, all alternator loads, A/C off , P/S over load, not active. (the P/s overload switch if stuck closed, idle is 1000 rpm for ever , hot)
P/S is the power steering pump overload switch, if bad or shorted to ground forces the rpm rise by 200, to 1000. and duty cycle change
the calibration must not have any of those loads or fail modes, nor in limphome or a bad tps idle switch, all are bad for the calibrate.

3: check duty cycle is at 50% if not adjust duty to land here.
4: shift from park to drive, 800 rpm , bumps down, 1sec and returns to 800.
5: hot idle is 800 plus 50 or minus 50 RPM. that is the ECU job to do that, we do only duty cycle.

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sure all that is good,
good fluids, brakes, tires.
good timing
good idle.
if have scan tool?, holds closed loop at idle and hot fast light flat cruise, foot steady.