On my 98 mark viii motor I have been having trouble wiring the IAC control as I am unsure if it is stepper or PWM. The typical stepper motor usually have 4 wires and mine only has 2 electrodes and the PWM has 3 I believe. This could be a problem as I need to use fast idle or an aux output to open additional runners above 3000 rpms. If I use PWM style I eliminate the fast idle output. Any help with this would be great I have done homework I just hit information overload on IAC and idle options. Thanks in advance.
Jason
Idle air control question
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Idle air control question
Except for some early TBI systems, all Ford IACs I've seen have been 2 wire PWM types.
