where can you get just the blade for a throttle body
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First off, try loosening the blade screws and put
them back to barely snug, open the TB fully and
let the spring snap it shut. Do this a few times and
the blade will be centered up for best closed position.
Be sure the stop-screw is not limiting the closed
travel for this exercise, you want it to seat itself.
Then carefully tighten the screws and re-adjust the
stop-screw to -just- keep the blade from going over
dead-closed and sticking.
A really slow idle drop probably indicates an air leak
that is being fought by the idle trimming process.
This might be blade seating or it could be a leak
in the IAC servo seal, the PCV, or the intake-TB
O-ring. Use the usual vacuum leak detection methods
to rule this out.
them back to barely snug, open the TB fully and
let the spring snap it shut. Do this a few times and
the blade will be centered up for best closed position.
Be sure the stop-screw is not limiting the closed
travel for this exercise, you want it to seat itself.
Then carefully tighten the screws and re-adjust the
stop-screw to -just- keep the blade from going over
dead-closed and sticking.
A really slow idle drop probably indicates an air leak
that is being fought by the idle trimming process.
This might be blade seating or it could be a leak
in the IAC servo seal, the PCV, or the intake-TB
O-ring. Use the usual vacuum leak detection methods
to rule this out.