RPM is dropping from 4k to 1200. This is unusual. For kicks try the 029j ngc code since it's the one I tested on the scope. I did not see any rpm drop out issues with that code.
were gonna try a couple more things.like i said though were not sure if this would be a problem on everyone elses but as soon as we figure it out well post it up.prolly work on it later on today
__________________
email for price quotes/questions!!!
Email: Jay@N2MB.com
take a moment today to reflect on what happened on 11 september 2001...
but i just megasquirted an turbo accent this weekend (yes a damn hyundai)
and when the car was running just fuel off MS it was acting totally crazy, we let MS control timing i was bam the thing ran like a raped ape (well for an accent)
Richie
tried it..didnt work...but the real issue here is a hyundai
lol what turbo? fun size?
its a t3 .48 ex/.63 compressor totally stock motor, lol
just to let you crackers know the motor in the neon is not a 420a
Richie
no shit crackalacka.... but megasquirt was quite popular in the 2gnt's which does run a 420a (same as my avenger)
either way, gimme a call and lemme know what time ur gonna stop by on saturday, i don't think i got your # in my phone anymore
RPM is dropping from 4k to 1200. This is unusual. For kicks try the 029j ngc code since it's the one I tested on the scope. I did not see any rpm drop out issues with that code.
were gonna try a couple more things.like i said though were not sure if this would be a problem on everyone elses but as soon as we figure it out well post it up.prolly work on it later on today
I know I tested the 029j version on the stim and scope to 10,000rpm. The decoder worked flawlessly and spark timing looked dead on. The issue is probably somewhere else. I'm confident you guys will find it.
I believe you guys are right sayin it's a ground issue. This may be far fetched but try this: Disconnect the grounding capactor on the back of the head on the drivers side from the stock harness and connect it to the ground on the megasquirt harness. You guys might just be getting too much noise on the harness.
Sourkrout, i like your thinking
There def seems to be something going wrong with the MS, since the PCM is totally out of control of fuel and spark.
Boostjunkie... I just went out and reloaded 029j and that code was just nothing but problems for some reason. I needed almost +40 more in each cell to get the car to have the same fuels as 029q2 *edit* and no matter how i tried to change the settings for the wheel, it wouldnt fire properly. The engine was totally out of phase. Your 029q2 idles the car very well and that was the code version that i sent you the tables of and you said it fired correctly, so we can say that this code is working very well. Drivability is great until the rpms get higher, so i feel that your code is not the issue.
Tomorrow morning (Hurrcaine floyd has returned to my driveway) I'm going to reground the whole system and check the wiring on everything and see if it helps. I know grindpunk was working on his today, so maybe he will have some results later on
update: I have located a MAJOR error with megasquirt wiring diagrams which is not idiot proof. If you look here http://www.rs-autosport.net/catalog/...iring_420a.gif you think that according to the injector wiring, those are cyl 1-4, so an idiot (like myself) would just wire according to the diagram. Where in fact according to this diagram (left to right), it should be 1,4,2,3. haha, this is most likely the reason for the blow out... no fuel in those cylinders
update: I have located a MAJOR error with megasquirt wiring diagrams which is not idiot proof. If you look here http://www.rs-autosport.net/catalog/...iring_420a.gif you think that according to the injector wiring, those are cyl 1-4, so an idiot (like myself) would just wire according to the diagram. Where in fact according to this diagram (left to right), it should be 1,4,2,3. haha, this is most likely the reason for the blow out... no fuel in those cylinders
That's good for everyone to know, but your log shows rpm's dropping steeply in 3 places so you/we still have issues. I really hope reworking the ground helps out. Keep us informed.
Edit:
I found this pic which makes wiring alot easier
Last edited by sour kraut : 06-01-2006 at 09:32 PM.
update: I have located a MAJOR error with megasquirt wiring diagrams which is not idiot proof. If you look here http://www.rs-autosport.net/catalog/...iring_420a.gif you think that according to the injector wiring, those are cyl 1-4, so an idiot (like myself) would just wire according to the diagram. Where in fact according to this diagram (left to right), it should be 1,4,2,3. haha, this is most likely the reason for the blow out... no fuel in those cylinders
The injection events are not timed with the crankshaft. You can wire the injectors any way you want and it will run exactly the same. I've actually tested this myself.
The reason is because when the megasquirt was first designed it was only meant for fuel-only. It used a tach signal to trigger the fuel injection. Since tach signals are not timed with the crank events, neither was the fuel injection. When the MSNS-E guys added spark control they simply left the fueling scheme as-is since it seemed to work just fine.
update. i got the car to fire and run on fuel only problem im still runnin extremely rich on the fuel side so it will idle for a little and then cut out. then the engine flooded. i did bring it up to 4k on fuel only and it was backfiring with stock spark. i could rev past it but it was still back firing so im gonna hook up the modules here shortly and see what happens. i also have to pull fuel at startup cuz cyl 1 and 4 were freeking drenched in gas. more as it happens
Well we pulled apart the MS today and noticed that the ground on the board was kinda loose (screw + bolt that holds a noise filter). So we tighened it up, and checked for anything fried on the board and it all looks good. Didnt get a chance to check if it worked cause it is pouring outside and 2am.
update: I have located a MAJOR error with megasquirt wiring diagrams which is not idiot proof. If you look here http://www.rs-autosport.net/catalog/...iring_420a.gif you think that according to the injector wiring, those are cyl 1-4, so an idiot (like myself) would just wire according to the diagram. Where in fact according to this diagram (left to right), it should be 1,4,2,3. haha, this is most likely the reason for the blow out... no fuel in those cylinders
The injection events are not timed with the crankshaft. You can wire the injectors any way you want and it will run exactly the same. I've actually tested this myself.
The reason is because when the megasquirt was first designed it was only meant for fuel-only. It used a tach signal to trigger the fuel injection. Since tach signals are not timed with the crank events, neither was the fuel injection. When the MSNS-E guys added spark control they simply left the fueling scheme as-is since it seemed to work just fine.
I somewhat understand what you are saying, but I didnt wire the injectors backwards, I totally miss-wired them so they arent firing in the proper firing order. For instance, cylinder 1&2 fire together and 3&4 fire together instead of the 1&4 and 2&3 order. So to my understanding, only one cylinder would be getting fuel during the proper stroke therefore getting spark blowout.
I somewhat understand what you are saying, but I didnt wire the injectors backwards, I totally miss-wired them so they arent firing in the proper firing order. For instance, cylinder 1&2 fire together and 3&4 fire together instead of the 1&4 and 2&3 order. So to my understanding, only one cylinder would be getting fuel during the proper stroke therefore getting spark blowout.
Does this make any sense?
Car must sound like it has cams.
__________________
“Believe in yourself. Believe in your own potential for greatness. Believe that you can change the world. It is something that is within each of us.”
update: I have located a MAJOR error with megasquirt wiring diagrams which is not idiot proof. If you look here http://www.rs-autosport.net/catalog/...iring_420a.gif you think that according to the injector wiring, those are cyl 1-4, so an idiot (like myself) would just wire according to the diagram. Where in fact according to this diagram (left to right), it should be 1,4,2,3. haha, this is most likely the reason for the blow out... no fuel in those cylinders
The injection events are not timed with the crankshaft. You can wire the injectors any way you want and it will run exactly the same. I've actually tested this myself.
The reason is because when the megasquirt was first designed it was only meant for fuel-only. It used a tach signal to trigger the fuel injection. Since tach signals are not timed with the crank events, neither was the fuel injection. When the MSNS-E guys added spark control they simply left the fueling scheme as-is since it seemed to work just fine.
I somewhat understand what you are saying, but I didnt wire the injectors backwards, I totally miss-wired them so they arent firing in the proper firing order. For instance, cylinder 1&2 fire together and 3&4 fire together instead of the 1&4 and 2&3 order. So to my understanding, only one cylinder would be getting fuel during the proper stroke therefore getting spark blowout.
Does this make any sense?
from what i understand it does not matter at all, how the injectors are wired up
but i am like you specJ i don't understand why
richie
update: I have located a MAJOR error with megasquirt wiring diagrams which is not idiot proof. If you look here http://www.rs-autosport.net/catalog/...iring_420a.gif you think that according to the injector wiring, those are cyl 1-4, so an idiot (like myself) would just wire according to the diagram. Where in fact according to this diagram (left to right), it should be 1,4,2,3. haha, this is most likely the reason for the blow out... no fuel in those cylinders
The injection events are not timed with the crankshaft. You can wire the injectors any way you want and it will run exactly the same. I've actually tested this myself.
The reason is because when the megasquirt was first designed it was only meant for fuel-only. It used a tach signal to trigger the fuel injection. Since tach signals are not timed with the crank events, neither was the fuel injection. When the MSNS-E guys added spark control they simply left the fueling scheme as-is since it seemed to work just fine.
I somewhat understand what you are saying, but I didnt wire the injectors backwards, I totally miss-wired them so they arent firing in the proper firing order. For instance, cylinder 1&2 fire together and 3&4 fire together instead of the 1&4 and 2&3 order. So to my understanding, only one cylinder would be getting fuel during the proper stroke therefore getting spark blowout.
Does this make any sense?
from what i understand it does not matter at all, how the injectors are wired up
but i am like you specJ i don't understand why
richie
wake up and get on aim, we're already here working
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shoppi
(same as my avenger)
Linear Mode
