Megasquirt Problem, No spark, no fuel, cant connect to pc, + more. Help please!!
#1
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Right so I got a megasquirt built by Reverant off here. He has been more than helpful in answering my noobish questions about it too. But we've now everything back in, and the car wont start. So thought I'd also throw it up here to see if I could get some other suggestions, help or ideas. Have to map the car this weekend as have a drifting comp saturday week, and alot of other stuff to do before then. I am not a mechanic, but try and understand and learn as best I can, but I apologise if any of my info or answers are stupid or ill informed lol! I have searched alot on here, but just cant seem to find an answer. Sorry if I'm blindly missin it!
Spec is:
Early 90s 1.6 engine rebuilt less than 15k ago,
T25 turbo,
Intercooler, manifold, downpipe, etc etc
Innovate MTX-L wideband
TPS sensor, IAT sensor etc.
Megasquirt MS2/Extra V3.1.0 firmware I believe
550cc injectors
DIY Autotune EBC soleniod
Engine cranks over, but no spark and no fuel. Power is going to the ecu. Power going to the TPS sensor aswell so that means the ecu must have power going through it right? Wideband all seems to work fine.
Cant seem to connect to the laptop via serial to usb connection either. I've since read on here in the FAQ that changing the port to lower than 10 could help. On tunerstudio though I used the mini terminal to send a S, and got back the megasquirt details (something I saw online). So that means the ecu must be working right? Cant seem to get anything through megatune, but that could just be the port thing. Will try that tomorrow. Or maybe I'm just setting it up wrong? Should it be version 2.25 I'm using?
However as far as I can understand, since it should have a base map, then it should start? Connecting to the laptop is a problem, but shouldnt affect the actual starting of the car? It would I imagine help to diagnose the problem though.
So any suggestions or help on what we should check tomorrow evening? Anything at all that we could even rule out would be greatly appreciated as I've thrown everything I have into this, and now I'm very close to torching it.....
Spec is:
Early 90s 1.6 engine rebuilt less than 15k ago,
T25 turbo,
Intercooler, manifold, downpipe, etc etc
Innovate MTX-L wideband
TPS sensor, IAT sensor etc.
Megasquirt MS2/Extra V3.1.0 firmware I believe
550cc injectors
DIY Autotune EBC soleniod
Engine cranks over, but no spark and no fuel. Power is going to the ecu. Power going to the TPS sensor aswell so that means the ecu must have power going through it right? Wideband all seems to work fine.
Cant seem to connect to the laptop via serial to usb connection either. I've since read on here in the FAQ that changing the port to lower than 10 could help. On tunerstudio though I used the mini terminal to send a S, and got back the megasquirt details (something I saw online). So that means the ecu must be working right? Cant seem to get anything through megatune, but that could just be the port thing. Will try that tomorrow. Or maybe I'm just setting it up wrong? Should it be version 2.25 I'm using?
However as far as I can understand, since it should have a base map, then it should start? Connecting to the laptop is a problem, but shouldnt affect the actual starting of the car? It would I imagine help to diagnose the problem though.
So any suggestions or help on what we should check tomorrow evening? Anything at all that we could even rule out would be greatly appreciated as I've thrown everything I have into this, and now I'm very close to torching it.....
#2
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Well the fact that you got the megasquirt details by typing S helps a lot! That means that the ECU is alive and that the usb to serial cable works, so its a matter of getting TunerStudio to communicate as well, in order to see what the problem is.
Please describe the steps you take to setup the project in tunerstudio. The firmware version is 3.1.0.
Please describe the steps you take to setup the project in tunerstudio. The firmware version is 3.1.0.
#3
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Hey mate, yeh tunerstudio was not something I actually setup much, or right probably tbh. I was more concentrating on megatune.
I know for megatune I set up the project as:
MSII - Grippo and Bowling
Idle controller as (on/off fiddle valve, I actually havent a clue which one it should be)
Lambda sensor as (wideband but none of the above as MTX-L isnt listed)
Fueling Algorithim as (Speed_density)
Left the MAP as the one selected (default)
Selected celsius, and left the other stuff, Kpa values and colour as it was
I didnt try much with tunerstudio, only could use the mini terminal.
I will use my laptop this evening (about 3-4 hours time, 6-7pm GMT), to try the com port lower than 10 or ideally lower than 5. Could only use com 11,12 and 16 on my mates laptop.
So downloading tunerstudioMS now on mine and will try and set it up correctly. What settings should I use or go about setting it up?
I know for megatune I set up the project as:
MSII - Grippo and Bowling
Idle controller as (on/off fiddle valve, I actually havent a clue which one it should be)
Lambda sensor as (wideband but none of the above as MTX-L isnt listed)
Fueling Algorithim as (Speed_density)
Left the MAP as the one selected (default)
Selected celsius, and left the other stuff, Kpa values and colour as it was
I didnt try much with tunerstudio, only could use the mini terminal.
I will use my laptop this evening (about 3-4 hours time, 6-7pm GMT), to try the com port lower than 10 or ideally lower than 5. Could only use com 11,12 and 16 on my mates laptop.
So downloading tunerstudioMS now on mine and will try and set it up correctly. What settings should I use or go about setting it up?
#9
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Making progress here anyway! I presume that since I got the "S" mini terminal signal back, that once I set it up correctly then it should connect fine? Then to try and diagnose the problem...
#11
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Yeh thats fine I got into tunerstudio properly just offline, and I can see all the features. Looks perfect.
So just need to know for the other settings so I can be sure:
Ego 02 Sensor: Should I select "wideband sensor but none of the above" or "innovate sensor giving 1-2V 10-20:1 AFR" for my Innovate MTX-L?
Do I leave the rest as is? I'll change to Celsius though. MAP Baro OFF?
Select the right com obviously and the 115200 speed
Anything else I need to set or change?
So just need to know for the other settings so I can be sure:
Ego 02 Sensor: Should I select "wideband sensor but none of the above" or "innovate sensor giving 1-2V 10-20:1 AFR" for my Innovate MTX-L?
Do I leave the rest as is? I'll change to Celsius though. MAP Baro OFF?
Select the right com obviously and the 115200 speed
Anything else I need to set or change?