miata/eunos wont start - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to Miataturbo.net   Members

MEGAsquirt A place to collectively sort out this megasquirt gizmo

LinkBack Thread Tools
Old 09-06-2009, 10:11 AM   #1
Thread Starter
Join Date: Oct 2008
Posts: 9
Total Cats: 0
Default miata/eunos wont start


92 eunos roadster,
stock ignition,
greddy turbo using afpr base timing at 7/8 degrees,
MS1 V3 built using Miata turbo guide
using MSPNP 90-93 AFM msq with the ony change being the spark output inverted to yes,
Joe Perez's Revised spark output circuit.

Im out of ideas as to what could be wrong so im looking for guidance as to what is the most likely problems so I can cross them off one by one?

I've noticed that the MAT and CLT are different considering its still using the stock sensor in the air flow meter and the car was pretty cold. It doesn't look to me like its getting any warm up or after start enrichment? Also its the standard on/off TPS so not sure whats happening there either as I was sat in the passenger seat

Attached Files
File Type: msq mspnpnew.msq (32.6 KB, 61 views)
Offline 55 is offline   Reply With Quote
Old 09-06-2009, 05:05 PM   #2
Junior Member
Join Date: Jun 2008
Location: New Forest, U.K.
Posts: 336
Total Cats: 4

Unplug the tps (at the tps). You have it wired for a "real" tps that you will eventually upgrade to, but with the standard tps plugged in it grounds out the 5v ref. signal and shuts the whole thing down. Or at least it did on my 92 Eunos when I put my MS in. I run it with the tps unplugged until I get a true potentiometer one fitted
Blaize is offline   Reply With Quote
Old 09-11-2009, 02:38 PM   #3
Thread Starter
Join Date: Oct 2008
Posts: 9
Total Cats: 0

Thanks for the input blaize. I've tried it with it disconnected but I think my problem may be a bit more serious/obvious. I've pulled the two plugs nearest the radiator (1&2?) and there was no obvious spark and the plugs looked dry although I could smell fuel. They were also quite black which may be from previously running with th afpr.

I realised after I tested the plugs the TPS was still disconnected but dont think that should effect the spark. I unplugged the TPS while on the stock ecu and it still ran.
Offline 55 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 52 08-28-2016 04:18 AM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 09:30 AM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 12:45 AM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 02:44 PM
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 10:59 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 07:37 AM.