10-05-2023, 08:12 PM
THE IAC under TB is a thermal fast idle device, uses a wax pellet just like the engine coolant thermstat does.
it closed the IAC at 150f and above. when cold and open the IAC it lets in start up air and the fast cold idle air for about 1500 rpm, (more higher say in Alaska)
when it fails closed , there is way too little start up air to run the engine. (there is some but is small)
it closed the IAC at 150f and above. when cold and open the IAC it lets in start up air and the fast cold idle air for about 1500 rpm, (more higher say in Alaska)
when it fails closed , there is way too little start up air to run the engine. (there is some but is small)
http://www.fixkick.com