04-13-2020, 08:38 PM
3000 RPM idles are crazy high, and smacks of lots of failures that. 1500 is Par on typical cool morning start up.
vacuum leaks .
map sensor hoses cracked or clogged. end to end, intake man nipple to MAP. must be good.
throttle stuck open some way, throttle cable not set right with 1/2": (10mm) slack?> do you have 1 or 3 throttle cables. TV, A/T kickdown) and cruise cables.
the ISC stuck open top of TB. (new TB not possible this)
IAC at base of TB stuck open will they all are cold engine. all are.
Dash pot stuck open or engaged, at TB, it must release in 15 to 30 seconds after start, of engine.
my guess is NEW TB installed and not calibrated to this engine, as must be done first. on all TBI track-kicks. called IDLE duty cycle settings, at TV stop screw.
so is a side show now, but is it?. for sure TPS never calibrated. that too can be all wrong on any new TB installed.
the idle switch is calibrated with a feeler gauge even done on a bench this 1 step.
if the idle switch switch does not close at idle, idle controls are cancelled. and RPM is not known, in this state of wrong.
but none of this TB wrong stuff causes, cut fuel. but well if the TPS is mounted with zero regard to index pins inside, sure it can do throttle angle wrong (max) and cuts fuel. (some many things can be wrong for sure not calibrating TPS first. any alien TB out of any box)
vacuum leaks .
map sensor hoses cracked or clogged. end to end, intake man nipple to MAP. must be good.
throttle stuck open some way, throttle cable not set right with 1/2": (10mm) slack?> do you have 1 or 3 throttle cables. TV, A/T kickdown) and cruise cables.
the ISC stuck open top of TB. (new TB not possible this)
IAC at base of TB stuck open will they all are cold engine. all are.
Dash pot stuck open or engaged, at TB, it must release in 15 to 30 seconds after start, of engine.
my guess is NEW TB installed and not calibrated to this engine, as must be done first. on all TBI track-kicks. called IDLE duty cycle settings, at TV stop screw.
so is a side show now, but is it?. for sure TPS never calibrated. that too can be all wrong on any new TB installed.
the idle switch is calibrated with a feeler gauge even done on a bench this 1 step.
if the idle switch switch does not close at idle, idle controls are cancelled. and RPM is not known, in this state of wrong.
but none of this TB wrong stuff causes, cut fuel. but well if the TPS is mounted with zero regard to index pins inside, sure it can do throttle angle wrong (max) and cuts fuel. (some many things can be wrong for sure not calibrating TPS first. any alien TB out of any box)
http://www.fixkick.com