Ford 2.3 Turbo Idle speed control question

For discussing injector selection,manifold modifications, throttle bodies, fuel supply system design and construction, and FIdle valves and IACs.
Forum rules
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.
Post Reply
vrinner
MegaSquirt Newbie
Posts: 1
Joined: Mon Jun 11, 2007 8:06 pm

Ford 2.3 Turbo Idle speed control question

Post by vrinner »

I have an MS-II 3.0 system that I am in the process of wiring up in my Mustang SVO 2.3 turbo. I have a couple of quesions on using the STOCK ISC and where to place the Stepper IAC....

My throttle body has a Idle Speed Control Valve (ISC)...does the Stepper IAC replace this?

If the Stepper IAC replaces the ISC, do I somehow mount the IAC where the ISC is, OR do I put the Stepper IAC somewhere else? If I put it somewhere else, where do I put it?

Thanks!
Philip Lochner
Helpful Squirter
Posts: 96
Joined: Thu Feb 16, 2006 5:18 am
Location: South Africa
Contact:

Post by Philip Lochner »

I'm sure someone could give you exact answers but I will respond from a more generic perspective.

Chances are that your "ISC" is a PWM control valve which means that rather than using a stepper motor to control idle air, you can use that as is (assuming you have high impedance injectors) and control it with your MS.

Try and find out how the ISC works and see if that matches up with MS' PWM idle control capabilities.
Best regards
Philip
'74 Jensen Interceptor Mk3 (MS-2 EFI, GPIO + GM 4L60e)
'80 Jaguar XJS 5.3L V12* (MS-2 EFI + dual EDIS-6)
and about 10 others.
Post Reply