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New build Tephra V7, SD, No Start/Spark

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Old Sep 18, 2017, 06:44 AM   #16
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Originally Posted by Evo8Emperor View Post
Yeah I had 12v power key on at pin 1

Had good ground at pin 3 and not getting signal from ecu for spark obviously so just tested continuity which is good.
Pin 2 is ground. Pin 3 is ecu signal.
What are you getting at pin 3?
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Old Sep 18, 2017, 07:16 AM   #17
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this is gonna sound dumb, but just making sure. You are using the correct ECU for your year, and the correct Rom ID for that ECU right?
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Old Sep 18, 2017, 09:30 AM   #18
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Im thinking the issue is the ecu isnt sending the ignition coil voltage to pin 3.

1. Bad ecu
2. Ecu missing some sort of input such as rpm signal.
3. What biggie said. Rom related
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Old Sep 18, 2017, 03:45 PM   #19
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Drives: 03 Evo 8, 01 Honda 929RR

Car ROM is posted.

Car is originally an 03. Im second owner which i got it at 18k. Pulled the stock motor at 44k for new 2.3 stroker.

I just bought a used one from member here. Its from an 04.

I am using Tephra's V7 96531706 ROM set up for speed density.

IAT input is OE for MAF input. Running GM IAT

Omni 4 bar map sensor. Changed settings in Ecuflash to accomodate

All new crank, cam, and coolant temp sensor. New knock sensor also but not installed. Believe new one in there already anyway.

I get RPM's through Evoscan and a Solus. Also have logs posted of cranking the car.

Can't think what else to list. Just got home from work not by the car.
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Old Sep 18, 2017, 04:48 PM   #20
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Ok so back to the coil plugs. Your not getting voltage to pin 3?
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Old Sep 18, 2017, 04:54 PM   #21
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yeah we are getting are constant 12v power in the red/yellow wire from the MFI relay.

Not getting a signal from ecu while cranking. Not at the shop tonight or id take a reading again just to be sure and post anyway.
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Old Sep 18, 2017, 05:44 PM   #22
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So thats the issue. Ecu isnt sending the signal. So you have continuity from pin 3 to ecu?
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Old Sep 18, 2017, 05:51 PM   #23
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yeah we have good continuity.
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Old Sep 18, 2017, 06:23 PM   #24
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So either the ecu is missing an input such as cam or crank sensor or the ecu is bricked
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Old Sep 18, 2017, 06:34 PM   #25
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Ive been logging it while cranking.

It shows my RPM's usually 156 cranking it.

You ever log crank signal in evoscan ?
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Old Sep 18, 2017, 07:12 PM   #26
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No i havent but 156 rpm while cranking sounds to little. I would think someweres around 500 rpm. Ill log my cranking rpm and let u know
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Old Sep 18, 2017, 07:22 PM   #27
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see if you can see what crank signal says too if you could. curious
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Old Sep 19, 2017, 04:58 PM   #28
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You by chance notice if your tach moves when cranking over ?
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Old Sep 19, 2017, 05:15 PM   #29
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I totally forgot. Busy day at the shop. I have my laptop at home. When i have time ill see how many rpm.

But i do know when you tune the cranking enrichment for cold start you adjust the 500 rpm section. So im sure 156 rpm is not enough.
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Old Sep 20, 2017, 02:51 AM   #30
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by any chance, have you messed around with your iscv tables?

to be more specific, your idle stepper look up table?
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