Quote:
Originally Posted by 65fastback2+2
the higher start rpm's are needed to get the motor warm and everything working properly....just like a choke on an older engine...my edelbrock 600 cfm electric choke wont idle the 302 down till about 5-6 minutes of actual driving.
The reason for the slower off-the-line feeling for most people is the motor at low rpm's isnt running at its best, nor is it able to demand as much air needed to make combustion. with the smaller air hole, this will hurt off-the-line, however, at higher rpm the motor will pull the air it needs easier...
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Say what?
The IAC has NOTHING to do with off idle response. It controls idle speed when the T/P is closed. Another cause of a hanging idle (and this is right out of the Ford Service Manual, Powertrain Control/ Emissions Diagnosis) is a bad PCV valve.