Megasquirt Problem, No spark, no fuel, cant connect to pc, + more. Help please!! - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 02-23-2011, 06:42 PM   #41
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Dont know if its of any use but I attached it here
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File Type: csv mx5 turbo 3.csv (9.8 KB, 43 views)
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Old 02-23-2011, 06:47 PM   #42
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You didn't forget to plug the CAS back in, did you? I'm not seeing ANYTHING in that log.
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Old 02-23-2011, 06:51 PM   #43
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no its in. This is the problem, nothing appearing. Plus it started with standard ecu so the CAS sensor must be working?
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Old 02-23-2011, 06:56 PM   #44
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Obviously its not the CAS. Can you take a hi-res picture of the connector that has the CAS wires in it? I need a top and bottom pic so that I can see both rows of wires.
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Old 02-23-2011, 07:00 PM   #45
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Will try and do that now. Only have camera phones with us but might be ok. Would it make any difference if we swapped the CAS wires around? I presume not
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Old 02-23-2011, 07:02 PM   #46
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No, it wouldn't help. Lets see the pics.
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Old 02-23-2011, 07:10 PM   #47
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Remember that we changed the CAS wire on the loom rather than the megasquirt one
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Megasquirt Problem, No spark, no fuel, cant connect to pc, + more. Help please!!-23022011019.jpg   Megasquirt Problem, No spark, no fuel, cant connect to pc, + more. Help please!!-23022011020.jpg  
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Old 02-23-2011, 07:11 PM   #48
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one more
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Old 02-23-2011, 07:15 PM   #49
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That's correct, it should work. Did you say that you actually also tested it on a MegaStim?
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Old 02-23-2011, 07:18 PM   #50
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Quote:
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That's correct, it should work. Did you say that you actually also tested it on a MegaStim?
No I dont have one. I just meant that you checked it didnt you?
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Old 02-23-2011, 07:23 PM   #51
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Yes I did, I have a custom stim that tests all aspects of the ECU, down to the radiator fans, A/C if built etc. Obviously I tested it thoroughly which is why I reported the problems I told you about in the PMs. I'm out of ideas right now and its getting late over here. I need to think more clearly, you don't happen to have access to a scope somehow? Friend's, at work, anything?
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Old 02-23-2011, 07:31 PM   #52
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Quote:
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Yes I did, I have a custom stim that tests all aspects of the ECU, down to the radiator fans, A/C if built etc. Obviously I tested it thoroughly which is why I reported the problems I told you about in the PMs. I'm out of ideas right now and its getting late over here. I need to think more clearly, you don't happen to have access to a scope somehow? Friend's, at work, anything?
Quickly would you have a wiring diagram megasquirt, for the pin outs and what they do. So we can just go through and check if anything doesnt match up tonight. Will be hard to get access to a scope for us, but will try. Other than that I suppose we'll have to try again tomorrow, but I'm working the next few evenings. Will sort something out though.
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Old 02-23-2011, 07:34 PM   #53
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Just a note, when I did my ms2 I got 0 rpm output using the harness I built, but from a extra CAS I had hookedup directly to the ms2 I knew it was reading the CAS input correctly. I had found out my CAS wires on my harness I built were backwards. I had to flip them instead of ms2 ckp to ckp at cas. I had ms2 ckp to cmp at cas.

Hooked up backwards read no rpms, flipped to correct way worked out and read correct RPMs

ms2 set to 4g63
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Old 02-23-2011, 07:37 PM   #54
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Code:
Function	DB37	Connector
SENSOR GND	1.2	4C,4D
Tacho	        3	???
Knock input	4	???
Boost control	5	???
Coolant Fan	6	1R
GND	        8-19	4A,4B
IAT	        20	4P
CLT	        21	4Q
TPS	        22	4L
O2 IN	        23	???
Crank Sensor	24	4F
Cam Sensor	25	4G
VREF	        26	1N
Condenser Fan	27	???
+12V	        28	1B
	        29	???
Idle valve	30	4W
IGN2	        31	1G
INJ_A CYL1	32.33	4U
INJ_B CYL3	34.35	4Y
IGN1	        36	1H
Fuel Pump inverted	37	1C
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Old 02-23-2011, 07:53 PM   #55
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Right a breakthrough! Looked like it wasnt set to 4g63. Tuner may have changed it when he was trying to sense it. Not sure if he changed anything else though. Maybe send the base map again? Now receiving a crank signal and rpm though. Progress. Will do a composite log again.
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Old 02-23-2011, 08:03 PM   #56
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I think he may have changed the crank rpm from 250 to 200 aswell. Original file would be great and this may start......
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File Type: csv mx5 turbo 4.csv (20.9 KB, 39 views)
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Old 02-23-2011, 08:12 PM   #57
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Right so now we are gettin spark. All the gauges on main page are now working aswell, where we only had tps and fuel load before. Maybe just settings changed in the map that prevent startup......well hopefully!
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Old 02-23-2011, 09:03 PM   #58
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Problem then was just fuel......but.......we just sent direct power to it............and it started!!! Queue mad celebrations haha!!

So just gonna wire a driect feed/relay to the fuel tomorrow on a switch in the dash.

Massive thanks to Reverant and everyone else for the help. Feckin tuner fiddling with it didnt help. Basically the problem was the CAS wires as said above, and the fuel. But CAS sorted now, and we can easily sort the fuel.
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Old 02-24-2011, 04:44 AM   #59
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Excellent!!!
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Old 02-24-2011, 12:54 PM   #60
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Quote:
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Excellent!!!
Any chance you could email me the original map file if you still have it? Just to make sure nothing else was changed. Thanks again for all the late night troubleshooting, not many ppl would provide aftersale help like that.
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