ECUs and Tuning Discuss Engine Management, Tuning, & Programming
Sponsored by:
Sponsored by:

Cranking but not starting

 
Old 09-10-2017, 11:15 AM
  #1  
Newb
Thread Starter
 
Join Date: Jul 2017
Location: North Dakota
Posts: 41
Total Cats: 0
Default Cranking but not starting

Hello all, sorry if this isn't allowed, but I am stumped and cannot figure out what is wrong with my setup. I installed noisymime's speeduino and got everything working in tuner studio, but when I go to turn the key, the car won't start. Here is my setup:

93 1.6
Stock Injectors/Fuel Pump
GM IAT Sensor
KIA variable TPS mod
MAF Delete
AEM 35-8460 Wideband (Grounded to ECU ground)

I'm thinking I'm not getting fuel, but when I jump fp/gnd in the diag panel, I hear the pump going. I also removed the fuse required for the ecu to control the fuel pump in the main fuse box. I don't hear anything when the key is first turned to "on" though, which is when the fuel pump is supposed to start for a few seconds?

I also got a log from TS while cranking that I will attach, but I'm not sure what to look for in it..

Thanks!
Attached Files
File Type: msl
2017-09-10_10.07.18.msl (26.5 KB, 81 views)
bhop_alex is offline  
Old 09-11-2017, 08:05 PM
  #2  
Newb
 
Join Date: Jun 2017
Location: Athens, GA
Posts: 8
Total Cats: 2
Default

hey there brother. i am also on speeduino. and having starting issues, mine are more along the backfiring side of things and locking up.but mine will run eventually.

Ok your rpm values are way spiky. are you using the Speeduino mx5-pnp?

attach your tune file please.

also, have you updated your firmware, because the shipped july firmware had a major bug in it.

I have attached a barebones minimun speeduino basetune for a mx5 board.
This is setup for a 1.6 with stock injectors in factory batch fire mode

if you are running a different board make sure to change that setting under the engine constants tab.
Attached Files
File Type: msq
mtnet help.msq (32.9 KB, 184 views)
Stormfinder is offline  
Old 09-11-2017, 08:14 PM
  #3  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,220
Total Cats: 3,181
Default

the heck is a speeduino? a ms knockoff?
18psi is offline  
Old 09-11-2017, 08:19 PM
  #4  
Newb
 
Join Date: Jun 2017
Location: Athens, GA
Posts: 8
Total Cats: 2
Default

speeduino is an arduino based ECU, it is close to the mspnp 2 (maybe more like 1.5 lol) in terms of function, but is less than $200 for a pnp, and around $100 for a diy build.
Still uses tunerstudio, still does almost anything you can do with a MS, (launch control, idle control, flat shift, vvt control, etc) but definitely has to mature as a product.
I have a mspnp2 on one miata, and bought the speeduino for the other, gonna see how it stacks up.
Stormfinder is offline  
Old 09-13-2017, 06:27 PM
  #5  
Junior Member
 
Join Date: Jun 2015
Posts: 73
Total Cats: 11
Default

A couple of questions...
How do you have your jumpers set on the main board? Your RPM is really all over the place.
What trigger filter setting are you using?
Can you post up your tune file please?
With the fuel pump, I'd suggest just leaving the jumper in the diag box for now until you at least get the RPM issue sorted and the car running. Much easier dealing with 1 problem at a time

Finally, I'd suggest updating to the August firmware (https://speeduino.com/wiki/images/c/...uino-Aug17.zip) as it has a few improvements to the starting on this CAS.
noisymime is offline  
Old 09-14-2017, 02:50 PM
  #6  
Newb
Thread Starter
 
Join Date: Jul 2017
Location: North Dakota
Posts: 41
Total Cats: 0
Default

Originally Posted by noisymime View Post
A couple of questions...
How do you have your jumpers set on the main board? Your RPM is really all over the place.
What trigger filter setting are you using?
Can you post up your tune file please?
With the fuel pump, I'd suggest just leaving the jumper in the diag box for now until you at least get the RPM issue sorted and the car running. Much easier dealing with 1 problem at a time

Finally, I'd suggest updating to the August firmware (https://speeduino.com/wiki/images/c/...uino-Aug17.zip) as it has a few improvements to the starting on this CAS.
Hey man, thanks for getting back to me. After a bit of thinking about it, I remembered I forgot to take out the STIG fuse until about an hour into fiddling with it, because I was reading the instructions as "Take it out before trying to start the car" so I think I may have fried some of the speeduino :( I took a look at both boards, and nothing looks visibly broken, but I'll attach some pictures of it since I don't know what parts to look out for. I'll also attach my tune file. I daily it, but this weekend I'll give it another go with the August firmware for sure, thank you so much Josh!
Attached Thumbnails Cranking but not starting-img_3588.jpg   Cranking but not starting-img_3589.jpg   Cranking but not starting-img_3591.jpg  
Attached Files
File Type: msq
CurrentTune.msq (35.1 KB, 145 views)
bhop_alex is offline  
Old 09-14-2017, 05:57 PM
  #7  
Newb
 
Join Date: Jun 2017
Location: Athens, GA
Posts: 8
Total Cats: 2
Default

bhop.

I took a look at your tune, i noticed a few things. first, and biggest issue, you had the crank trigger set wrong. it was set to 36 tooth.
i adjusted this setting to the 4g63/miata for you. i also set the injectors to semi sequential as following the instructions.

i also gave the rest of the tune a quick look over and it seems like you have most of the rest set properly. Obviosly you will need to tune all of the tables, but settings wise seems correct.

burn the tune below to the speeduino and you should be able to get it to fire up, if it stumbles try cranking about 1/4-1/2 throttle.

once running you may have to adjust your throttle set screw to correct idle.

Make sure to lock your timing advance at 10 degrees and verify base timing once you are sure you can start it. if it is off you can change the trigger angle value to correct for it.
Attached Files
File Type: msq
fixed settings for bhop.msq (32.9 KB, 94 views)
Stormfinder is offline  
Old 09-21-2017, 06:56 PM
  #8  
Newb
Thread Starter
 
Join Date: Jul 2017
Location: North Dakota
Posts: 41
Total Cats: 0
Default

Originally Posted by Stormfinder View Post
bhop.

I took a look at your tune, i noticed a few things. first, and biggest issue, you had the crank trigger set wrong. it was set to 36 tooth.
i adjusted this setting to the 4g63/miata for you. i also set the injectors to semi sequential as following the instructions.

i also gave the rest of the tune a quick look over and it seems like you have most of the rest set properly. Obviosly you will need to tune all of the tables, but settings wise seems correct.

burn the tune below to the speeduino and you should be able to get it to fire up, if it stumbles try cranking about 1/4-1/2 throttle.

once running you may have to adjust your throttle set screw to correct idle.

Make sure to lock your timing advance at 10 degrees and verify base timing once you are sure you can start it. if it is off you can change the trigger angle value to correct for it.
It starts! Albeit, very rough, but it idles! I saw on my wideband it seems to be a little rich, and if I give it some gas it stumbles. When I'm starting it, it cranks until I give it some throttle then it fumbles into an idle. I attached a log of me starting it, hopefully it shows what I've explained. Thanks for the tune! I guess I just need to do some fine tuning, but tbh I'm not 100% sure where to start.

Also, I had to jump my fuel pump to ground to get it to start.. but that's probably because I fried something on the board when I didn't remove the fuse. Is it safe to keep this in? I know it won't start without it, but is it safe as a "permanent" solution?
Attached Files
File Type: msl
2017-09-21_17.49.56.msl (78.9 KB, 63 views)

Last edited by bhop_alex; 09-21-2017 at 07:29 PM.
bhop_alex is offline  
Old 07-11-2019, 10:12 AM
  #9  
Newb
 
Join Date: Jul 2019
Posts: 1
Total Cats: 0
Default

Originally Posted by bhop_alex View Post
It starts! Albeit, very rough, but it idles! I saw on my wideband it seems to be a little rich, and if I give it some gas it stumbles. When I'm starting it, it cranks until I give it some throttle then it fumbles into an idle. I attached a log of me starting it, hopefully it shows what I've explained. Thanks for the tune! I guess I just need to do some fine tuning, but tbh I'm not 100% sure where to start.

Also, I had to jump my fuel pump to ground to get it to start.. but that's probably because I fried something on the board when I didn't remove the fuse. Is it safe to keep this in? I know it won't start without it, but is it safe as a "permanent" solution?
Hi there, so sorry to bring this back up however I am having the exact same issue with the same setup!

i have tried using the maps here but nothing!!

Any advise please let me know!
vwalex92 is offline  
 


Thread Tools
Search this Thread

Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.