Megasquirt 2 issue--FIXED!!!!!
#1
Megasquirt 2 issue--FIXED!!!!!
Installed and wired my MS2 into a relay board following the diagram I am attatching below.
The issue I am having is a no start with terminal B. If it is connected it will crank over and not fire. If I disconnect it the car will fire and run no problem.
If I connect them while the engine is running it will stall and not fire up.
So right now I have been running them disconnected and the timing locked out...any ideas?
The issue I am having is a no start with terminal B. If it is connected it will crank over and not fire. If I disconnect it the car will fire and run no problem.
If I connect them while the engine is running it will stall and not fire up.
So right now I have been running them disconnected and the timing locked out...any ideas?
Last edited by Badass355ciz28; 01-26-2015 at 08:37 PM.
#2
Re: Megasquirt 2 issue
may have found my answer here.....thoughts???
http://www.diyautotune.com/tech_arti...part2-nova.htm
reconfigure for hei8 ignition
http://www.diyautotune.com/tech_arti...part2-nova.htm
reconfigure for hei8 ignition
Last edited by Badass355ciz28; 01-18-2015 at 10:43 PM.
#3
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Re: Megasquirt 2 issue
What ignition did you tell your MS2 you are running?
Is your MS2 setup for HEI ? You typically have to change a few jumpers on the MS2 3.57 board when using HEI.
-- Joe
Is your MS2 setup for HEI ? You typically have to change a few jumpers on the MS2 3.57 board when using HEI.
-- Joe
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Re: Megasquirt 2 issue
I have had to use the HEI mod on mine and have helped a few convert over to it.
http://www.diyautotune.com/catalog/p...kit-p-325.html
You can make your own with a 100ohm resistor. There is a video link on how to install it.
EDIT: I just re-read your post and it sounds like your ignition out wire is not connected properly. I use JS10 on mine and after you connect it you need to set it in the tune.
This is a picture of my 3.0 board but you can see the bottom red wire. It goes from JS10 under the processor over to the IGN out over by the main connector. The 3.57 board should be similar. I have one I can take a picture of if you need to see it.
EDIT 2
I had a minute and took a picture of the 3.57 board. The JS10 hole is labeled on the oposite side but you can see which one it is in the pic. It goes over to the middle hole where the optional ignition driver would go. I still recommend the HEI mod regardless.
http://www.diyautotune.com/catalog/p...kit-p-325.html
You can make your own with a 100ohm resistor. There is a video link on how to install it.
EDIT: I just re-read your post and it sounds like your ignition out wire is not connected properly. I use JS10 on mine and after you connect it you need to set it in the tune.
This is a picture of my 3.0 board but you can see the bottom red wire. It goes from JS10 under the processor over to the IGN out over by the main connector. The 3.57 board should be similar. I have one I can take a picture of if you need to see it.
EDIT 2
I had a minute and took a picture of the 3.57 board. The JS10 hole is labeled on the oposite side but you can see which one it is in the pic. It goes over to the middle hole where the optional ignition driver would go. I still recommend the HEI mod regardless.
Last edited by LilSki; 01-19-2015 at 01:29 PM.
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#9
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Re: Megasquirt 2 issue
You will need to set some jumpers for use with HEI. I doubt they are set from the factory. Your best best is to email Matt @ diy auto tune.
Then, you need to modify your ignition settings in tunerstudio. You'll want falling edge, trigger rise, 2.0msec coil dwell, and the spark output should be 'going high'.
Then unplug your est connector, set your base timing, tell tunerstudio what that number is and you should be all set.
-- Joe
Then, you need to modify your ignition settings in tunerstudio. You'll want falling edge, trigger rise, 2.0msec coil dwell, and the spark output should be 'going high'.
Then unplug your est connector, set your base timing, tell tunerstudio what that number is and you should be all set.
-- Joe
#10
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Car: 85 Trans Am
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Re: Megasquirt 2 issue
OK you are hooked up properly. Make sure the Spark A output is set right in the tune. By default it may be D14 but you want JS10.
If the engine is running in base time then that means the computer is seeing the signal from the module so the HEI mod may not be needed. This sounds like the ignition out is not working properly.
If the engine is running in base time then that means the computer is seeing the signal from the module so the HEI mod may not be needed. This sounds like the ignition out is not working properly.
Last edited by LilSki; 01-19-2015 at 01:37 PM.
#11
Re: Megasquirt 2 issue
You will need to set some jumpers for use with HEI. I doubt they are set from the factory. Your best best is to email Matt @ diy auto tune.
Then, you need to modify your ignition settings in tunerstudio. You'll want falling edge, trigger rise, 2.0msec coil dwell, and the spark output should be 'going high'.
Then unplug your est connector, set your base timing, tell tunerstudio what that number is and you should be all set.
-- Joe
Then, you need to modify your ignition settings in tunerstudio. You'll want falling edge, trigger rise, 2.0msec coil dwell, and the spark output should be 'going high'.
Then unplug your est connector, set your base timing, tell tunerstudio what that number is and you should be all set.
-- Joe
#12
Re: Megasquirt 2 issue
OK you are hooked up properly. Make sure the ignition out is set right in the tune. By default it may be D14 but you want JS10.
If the engine is running in base time then that means the computer is seeing the signal from the module so the HEI mod may not be needed. This sounds like the ignition out is not working properly.
If the engine is running in base time then that means the computer is seeing the signal from the module so the HEI mod may not be needed. This sounds like the ignition out is not working properly.
#14
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Car: 85 Trans Am
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Re: Megasquirt 2 issue
Yes because B is the 5vref. When it sees 5vref is expects to see a signal from pin E. If there is no signal from pin E it won't run. You have to make sure that pin E connects all the way back to JS10 inside the computer.
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Car: 85 Trans Am
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Transmission: T56
Axle/Gears: 9 bolt 3:27
Re: Megasquirt 2 issue
I would make 100% sure pin E connects to JS10 through all the wiring with a multimeter. If that is then the only things it could be is the MSII chip or the ignition module.
What firmware are you running?
What firmware are you running?
#21
Re: Megasquirt 2 issue
..I ordered the HEI mod kit and will try that. Ive also set the options in my MS tune as well
Spark mode--Basic trigger , Trigger angle offset to 10*, Falling edge, GMhei bypass off , Spark A output to Js10 ,Dwell type to standard dwell and Spark output to Going high
I will also check terminal E thru JS10 and see what's going on there.
Spark mode--Basic trigger , Trigger angle offset to 10*, Falling edge, GMhei bypass off , Spark A output to Js10 ,Dwell type to standard dwell and Spark output to Going high
I will also check terminal E thru JS10 and see what's going on there.
#22
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Car: '88 Formula, '94 Corvette, '95 Bird
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Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Megasquirt 2 issue
..I ordered the HEI mod kit and will try that. Ive also set the options in my MS tune as well
Spark mode--Basic trigger , Trigger angle offset to 10*, Falling edge, GMhei bypass off , Spark A output to Js10 ,Dwell type to standard dwell and Spark output to Going high
I will also check terminal E thru JS10 and see what's going on there.
Spark mode--Basic trigger , Trigger angle offset to 10*, Falling edge, GMhei bypass off , Spark A output to Js10 ,Dwell type to standard dwell and Spark output to Going high
I will also check terminal E thru JS10 and see what's going on there.
Once you get the "kit" in the mail, follow the instructions. You connect the two wires to the spins specified and you should be good to go.
-- Joe
#25
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Re: Megasquirt 2 issue
-- Joe
#33
Re: Megasquirt 2 issue
Well............loaded the new ignition setting and fired it up......Let it warm u to operating temp and set my trigger offset and my timing . I shut it off and went inside to eat dinner. Then went back out and it has started numerous times so I think everything is all set.
I'll let it sit all night and see if she fires first thing in the morning.
I'll let it sit all night and see if she fires first thing in the morning.
#34
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Megasquirt 2 issue
Well............loaded the new ignition setting and fired it up......Let it warm u to operating temp and set my trigger offset and my timing . I shut it off and went inside to eat dinner. Then went back out and it has started numerous times so I think everything is all set.
I'll let it sit all night and see if she fires first thing in the morning.
I'll let it sit all night and see if she fires first thing in the morning.
#35
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Car: '88 Formula, '94 Corvette, '95 Bird
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Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Megasquirt 2 issue
Well............loaded the new ignition setting and fired it up......Let it warm u to operating temp and set my trigger offset and my timing . I shut it off and went inside to eat dinner. Then went back out and it has started numerous times so I think everything is all set.
I'll let it sit all night and see if she fires first thing in the morning.
I'll let it sit all night and see if she fires first thing in the morning.
Now you just need to get a boost control solenoid and hook it up to your wastegate so you can dial in boost curves.
How close are you to framingham? You can get e85 out there. Hook up a flex fuel sensor to your fuel rail and you can run any blend of octane you desire.
MS is really amazing stuff. After like two days of playing with the MS I regretted all those years of messing with tunercat and tunerpro and emulators and all that crap GM stuff.
-- Joe
#37
Re: Megasquirt 2 issue
Haha it won't change over night. Glad you got it working.
Now you just need to get a boost control solenoid and hook it up to your wastegate so you can dial in boost curves.
How close are you to framingham? You can get e85 out there. Hook up a flex fuel sensor to your fuel rail and you can run any blend of octane you desire.
MS is really amazing stuff. After like two days of playing with the MS I regretted all those years of messing with tunercat and tunerpro and emulators and all that crap GM stuff.
-- Joe
Now you just need to get a boost control solenoid and hook it up to your wastegate so you can dial in boost curves.
How close are you to framingham? You can get e85 out there. Hook up a flex fuel sensor to your fuel rail and you can run any blend of octane you desire.
MS is really amazing stuff. After like two days of playing with the MS I regretted all those years of messing with tunercat and tunerpro and emulators and all that crap GM stuff.
-- Joe
(2) I work in Framingham at the Chevrolet Dealer right next to the MEMA/State Police Barracks.
#38
Re: Megasquirt 2 issue
This--Right from the website___--One note: You might notice in the HEI section of the MegaManual the recommendation to wire the B wire (5V) through a relay that makes this 5v signal hot when the engine is running, but not when it is cranking. Let me explain why-- this 5v signal tells the HEI module to allow the ECU to control the timing. When the ECU is NOT getting a 5v signal it goes back to base timing (whatever you set with a timing light here in a few minutes). The stock ECU does NOT send 5v when cranking so that the engine cranks at base timing. Wiring this as per the MegaManual creates the same type of behavior. My wiring recommendation above goes about this differently, but works well nonetheless. The difference is the computer is controlling timing during cranking. This shouldn't cause a problem as long as the computer is configured properly, and in my tests I've had no negative effects at all.
make sense Joe?
make sense Joe?
#39
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Car: 89 RS 89 iroc 87 firebird
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Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Megasquirt 2 issue
This--Right from the website___--One note: You might notice in the HEI section of the MegaManual the recommendation to wire the B wire (5V) through a relay that makes this 5v signal hot when the engine is running, but not when it is cranking. Let me explain why-- this 5v signal tells the HEI module to allow the ECU to control the timing. When the ECU is NOT getting a 5v signal it goes back to base timing (whatever you set with a timing light here in a few minutes). The stock ECU does NOT send 5v when cranking so that the engine cranks at base timing. Wiring this as per the MegaManual creates the same type of behavior. My wiring recommendation above goes about this differently, but works well nonetheless. The difference is the computer is controlling timing during cranking. This shouldn't cause a problem as long as the computer is configured properly, and in my tests I've had no negative effects at all.
make sense Joe?
make sense Joe?
thats sounds liek the diyautotune way of sending 5 volts on a controllable ecm output circut so its automatic , ive always done the relay, i may switch do a toggle switch this time around i like the idea of throwing timing back to base at will if im out somewere and dont have a laptop with me, and i get bad gas or something
#40
Re: Megasquirt 2 issue
thats sounds liek the diyautotune way of sending 5 volts on a controllable ecm output circut so its automatic , ive always done the relay, i may switch do a toggle switch this time around i like the idea of throwing timing back to base at will if im out somewere and dont have a laptop with me, and i get bad gas or something
#41
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Car: '88 Formula, '94 Corvette, '95 Bird
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Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Megasquirt 2 issue
This--Right from the website___--One note: You might notice in the HEI section of the MegaManual the recommendation to wire the B wire (5V) through a relay that makes this 5v signal hot when the engine is running, but not when it is cranking. Let me explain why-- this 5v signal tells the HEI module to allow the ECU to control the timing. When the ECU is NOT getting a 5v signal it goes back to base timing (whatever you set with a timing light here in a few minutes). The stock ECU does NOT send 5v when cranking so that the engine cranks at base timing. Wiring this as per the MegaManual creates the same type of behavior. My wiring recommendation above goes about this differently, but works well nonetheless. The difference is the computer is controlling timing during cranking. This shouldn't cause a problem as long as the computer is configured properly, and in my tests I've had no negative effects at all.
make sense Joe?
make sense Joe?
What is your base timing? 10 degrees? If so, when EST is unplugged you are cranking at 10 degrees. Once you apply 5 volts on the EST wire the ECM controls the timing. Your car probably won't start at 25 or whatever you have degrees.
So what is your cranking degrees set to ?
I have a different revision MS so my +5 on the EST connector is only during "run", so my cranking is on the module.
The MS2 is a little older and doesn't have some of the logic on board that mine has, so you can mimic such logic wiring it up this way:
Frankly, I think controlling cranking advance with the ECM is fine too.
-- Joe
Last edited by anesthes; 01-23-2015 at 07:14 AM.
#42
Re: Megasquirt 2 issue
Yes, your crank advance is probably too high.
What is your base timing? 10 degrees? If so, when EST is unplugged you are cranking at 10 degrees. Once you apply 5 volts on the EST wire the ECM controls the timing. Your car probably won't start at 25 or whatever you have degrees.
So what is your cranking degrees set to ?
I have a different revision MS so my +5 on the EST connector is only during "run", so my cranking is on the module.
-- Joe
What is your base timing? 10 degrees? If so, when EST is unplugged you are cranking at 10 degrees. Once you apply 5 volts on the EST wire the ECM controls the timing. Your car probably won't start at 25 or whatever you have degrees.
So what is your cranking degrees set to ?
I have a different revision MS so my +5 on the EST connector is only during "run", so my cranking is on the module.
-- Joe
#43
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Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Megasquirt 2 issue
Default is normally 10. So if your base is set to 14, set it to 14 or 20.
Setting it to less than your base might be an issue.
-- Joe
#44
Re: Megasquirt 2 issue
Well, that depends on what version of firmware but basically it's under "ignition settings" where you set the trigger type and all that.
Default is normally 10. So if your base is set to 14, set it to 14 or 20.
Setting it to less than your base might be an issue.
-- Joe
Default is normally 10. So if your base is set to 14, set it to 14 or 20.
Setting it to less than your base might be an issue.
-- Joe
#47
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Car: '88 Formula, '94 Corvette, '95 Bird
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Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Megasquirt 2 issue
#49
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Re: Megasquirt 2 issue
Originally Posted by anesthes
MS is really amazing stuff. After like two days of playing with the MS I regretted all those years of messing with tunercat and tunerpro and emulators and all that crap GM stuff...