Closed Loop RPM target = 0 - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to   Members

MEGAsquirt A place to collectively sort out this megasquirt gizmo

LinkBack Thread Tools
Old 03-24-2015, 12:27 PM   #1
Junior Member
Thread Starter
Join Date: Jan 2012
Location: Calgary, AB
Posts: 150
Total Cats: -11
Default Closed Loop RPM target = 0

To preface this question, I'll be writing a build thread once I have time to sit down and work on it. But for now, this problem is bugging me..

I've been having troubles with cold starts since my MS3 (Rev built) install. I've successfully installed RX8 Yellows and have the car driving around. However, during cold starts (coolant temps around 5C), the car will need throttle to start and throttle to keep it going until its warmed up. I've adjusted my crank settings, ASE and WUE but still haven't really gotten this problem to go away. Today I noticed what the issue might be..

My CL target RPM idle when cold reads: 0RPM (the gauge). So whenever I lift from throttle, my RPMs plummet to 0 and the car stalls out when I'm driving. When my car is warmed up (I'm still trying to determine the coolant temp of warm), the gauge displays idle target of: 850RPM. So I'm assuming that because CL idle registers that idle RPM should be 0 when cold, it drops the RPMS to just that when throttle is lifted. But I'm puzzled as to why it would register 0 RPM at idle when my CL idle RPM settings are set to 1500 when cold (see picture).

I've ruled out crank pulse/ASE/WUE as the car will start then idle at a very low RPM by itself. However, once throttle is applied, the RPMS will go up, then drop to a stall.

I think my problem has to do with how the software is registering the CL RPM target..

What do you guys think?
Attached Thumbnails
Closed Loop RPM target = 0-cltargetrpm.png   Closed Loop RPM target = 0-clsettings2.png  
Chowcow is offline   Reply With Quote
Old 03-24-2015, 02:24 PM   #2
Boost Czar

iTrader: (60)
Braineack's Avatar
Join Date: May 2005
Location: Chantilly, VA
Posts: 69,688
Total Cats: 1,362

is CL active when it's showing that?
Braineack is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 12:25 PM
Another Cast Manifold Corky Bell Prefabbed Turbo Kits 17 10-02-2015 09:28 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 09:30 AM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 02:44 PM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 07:39 PM

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 01:37 PM.