Car Won't start! Possible AEM issue?
02-17-2016, 12:41 AM
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Car Won't start! Possible AEM issue?
I have a TTS supercharged S2000 with an AEM v2 EMS, it's been running fine for a few years and the day before yesterday when it refused to start ... the battery went flat very quickly and I tried to jump start it ... it coughed and spluttered a few times but now nothing
I bought a new battery as the old one went flat way too quickly, it sparks on #1 and #2 (wires not long enough to test 3 and 4!), fuel pump primes and there is fuel pressure in the rail (next step is to test this pressure is correct) and I have used an LED on the injector plug and that flashes on all 4 as the engine spins. I also tried to tow start it and the engine was turning at 1500rpm but no sign of life at all
Connected the laptop to the ECU and the map looks fine, even swapped the map for an older version (as current has had a few minor tweaks to fan temps and launch). Spinning over with the laptop connected and looks ok as far as I can see but I'm not sure what to look for! Sensors *seem* to be feeding back ... does anyone have a logging profile for AEM that I can upload to log useful sensors? The defaults don't seem to log what would be useful in this case.
As I say, tonight I need to check fuel pressure is ok but then I'm lost on the next step really!
I'm booked in for a trackday next Monday so would like to try and get it running by then!!
Thanks
I bought a new battery as the old one went flat way too quickly, it sparks on #1 and #2 (wires not long enough to test 3 and 4!), fuel pump primes and there is fuel pressure in the rail (next step is to test this pressure is correct) and I have used an LED on the injector plug and that flashes on all 4 as the engine spins. I also tried to tow start it and the engine was turning at 1500rpm but no sign of life at all
Connected the laptop to the ECU and the map looks fine, even swapped the map for an older version (as current has had a few minor tweaks to fan temps and launch). Spinning over with the laptop connected and looks ok as far as I can see but I'm not sure what to look for! Sensors *seem* to be feeding back ... does anyone have a logging profile for AEM that I can upload to log useful sensors? The defaults don't seem to log what would be useful in this case.
As I say, tonight I need to check fuel pressure is ok but then I'm lost on the next step really!
I'm booked in for a trackday next Monday so would like to try and get it running by then!!
Thanks
02-17-2016, 01:03 AM
#2
Pull spark plugs and see if they are wet with gas. If they are --- you prolly have ignition issues. If they are dry --- fuel delivery issues.
Good luck!
Good luck!
02-17-2016, 12:10 PM
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https://www.s2ki.com/s2000/topic/114...#entry23883418
02-17-2016, 12:41 PM
#4
Can't open DAQ file. Is it compiled on a Mac? You sure you are getting good spark with every plug?
02-20-2016, 04:38 AM
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So thought maybe the cam sensors were not working .... replaced and still wont start
looking at the logs for the advanced pickup tab (attached) it looks like coil1 is always off .... I've no previous log of this data but I assume this should cycle on and off?
looking at the logs for the advanced pickup tab (attached) it looks like coil1 is always off .... I've no previous log of this data but I assume this should cycle on and off?
02-20-2016, 04:53 AM
#7
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06-14-2021, 11:51 AM
#8
Did you sort this out mate?
06-15-2021, 10:31 AM
#10
Can you believe it! I swapped MAP sensors on mine but it didn't solve the no start issue Still just about starts then sputters out a second or two later. Both MAP's might be bad though. At this rate I'm wondering which other sensors could be bad and causing the issue
Still just about starts then sputters out a second or two later. Both MAP's might be bad though. At this rate I'm wondering which other sensors could be bad and causing the issue