[Diy_efi] idle control 1227747

Steve Ravet Steve.Ravet
Thu Mar 9 05:13:59 UTC 2006


> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org 
> [mailto:diy_efi-bounces at diy-efi.org] On Behalf Of Darryl M Gilbert
> Sent: Wednesday, March 08, 2006 8:43 PM
> To: diy_efi at diy-efi.org
> Subject: [Diy_efi] idle control 1227747
> Hello: 1227747 355cu in SB Chevy. Trying to figure out how to 
> get idle down to the idle speeds in the target idle vs 
> coolant table. Currently ECM wants to keep the engine running 
> approx 1100 RPM, with 80 IAC steps.
> Temp is at 171 deg F. TPS reading .51 volts at idle, but Idle 
> speed will not come down to target idle table speeds?? Is 
> there a switch that tells the ECM when to invoke the target 
> idle table?? I think IAC steps vs Coolant is for Fast Idle 
> when cold?/ Any help will be greatly appreciated Darryl..

Darryl, what is the commanded rpm?  Is the computer purposely keeping
the idle at 1100, or is something else keeping it up there?  I'm having
a similar problem with my TBI system.


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