Re: 1 more little thing on my 1990 f150 idle problem
I assume you cannot start the motor 'hot' in either Park or Neutral.
Or does it fire if you hold some throttle on it?
Your not being completely clear.
It makes a difference to kinow this info because the differences in running statiegy is different.
Could be a trans switch, TFI, an IAC etc depending on specifically how it acts.