Tried a new MS tune and now car wont start

[Axemurderer]

This is not my car but is a buddy's. Basically he has a 2.4 engine with srt injectors on his neon running megasquirt. His car would run but it was not good so we tried a tune I found online and loaded it up. The car wouldent even start so we decided to reload the old tune and again the car wouldent start.

There was a warning screen when we first went to load the new tune saying it wasent capatible and it could cause issues (saying it expected to see 189 of this but saw 201 instead kind of thing)but he wanted to go a head with it and since its his car we did.

It is getting fuel but no spark, megatune says it's sending out 10 degrees of timing while cranking but its not reaching the wires.

We checked all the wiring and even swapped coils with a known working one but no luck.

I then tried completly reloading megatune on the laptop but still nothing.

Does anyone have any idea what we may have screwed up and how we may be able to fix this?

Thanks Axe

[ThirtyTwo]

First reload the firmware, then re-burn the original MSQ back onto the fresh firmware. Sometimes this can fix weird issues


if that doesnt work maybe the new tune didnt have the spark output set to inverted and he blew a fuse or a coil transistor(s)? Hook it up to a stimulator and see if the coil transistors are working.

[Axemurderer]

I tried to reload the firmwear but wasent able to. What do I do when it ask's me to ground out some "boot" or whatever it was?

We checked the fuses and there all good, I'll check the coil transistor if the firmwear re load doesent work.

[2K4NightRiderSRT]

Find the firmware for the MSQ you were running before. Reflash that.

If you're running extra code, you don't need the boot jumper. You have to tell the batch file that you're not upgrading from standard code. If you messed that up already, and loaded it like standard code, then you will have to re-load it that way (like standard code with the boot jumper). The boot jumper is that blue jumper on the top of the MS2 chip.

If you have no idea which firmware you were running with your working MSQ, you may try opening it in megatune and reading the top of the screen. It'll tell you which version of the firmware you're running.

Once you reflash the firmware, reburn the MSQ and you should be back to where you started.