Issue - Idle speed unpredictable
Given - MS II controllor with GM IAC with production Throttle Body.
New set-up (first time user)
Raised step time to 5.0ms
Everthing is working correctly except my idle speed is un-predictable
After carfully reading the manual (ten times) I am not clear on two items.
1. The manuel show the IAC wired (GM Squire connector) two differnet ways in two different sections.
The diffenents makes the IAC run in reverse from each other (it swappes coil A)
2. Software - Is 0 steps high idle or slow? - the manal again states to both ways (in my opionion).
Start (CranK) at 180 counts and 0 steps is wide open.
Not knowing one of these I can not determine what is correct. When the coolant temperature raises and the pindle restricts air - does the steps increase or decrease?
Understand this seems like a pretty basic question - but it has me fooled... everthing else went very well - cold starts took a while... Thanks MegaSquirt
Wants - add idle feedback
Thanks - Craig_Mark
IAC unreilable
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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: IAC unreilable
We've noticed some of these tend to stick if asked to move just one step. Try increasing the number of steps to 5 to 8 and see if it runs better.
