New build Tephra V7, SD, No Start/Spark

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Sep 17, 2017 | 04:08 AM
  #1  
Ok so i tried posting in the tephra v7 thread but havent had any luck with a reply.

I have a thread up HERE in the Engine/Turbo section trying to diagnosis a no start.

So if you take a look in that thread we have covered a lot of the bases.

I really think its my work in the ROM that might be holding us back but I don't have anyone around to back me up other than the community here.

I believe i did most of all the work if someone can just take a look over my ROM and make sure its set up right.

Again have to run Speed Density. Have GM IAT sensor wired in to MAF and Omni 4 Bar MAP Sensor.


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Sep 17, 2017 | 07:11 AM
  #2  
Ok so been going through everything and I re set up ecu to run GM IAT sensor on mat input and the 4 bar omni map sensor scaled right and scaling changed in ecuflash.

updated new rom.
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Sep 17, 2017 | 07:24 AM
  #3  
Is there also anyway someone could hook me up with a updated DataSettings Folder for Evoscan v2.9 ?

Trying to update the xml but doesn't seem like Im getting the new stuff in Evoscan.

Havent been able to connect to car either.
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Sep 17, 2017 | 10:39 AM
  #4  
log of my car cranking over. anyone see anything that sticks out ?


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Sep 17, 2017 | 02:40 PM
  #5  
Likely an immobilizer issue.
Either wrong code
Ot wrong year selected.

Use the dtc scan option in evoscan. If its imobbilizer related usually theres a trouble code that sets.
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Sep 17, 2017 | 02:45 PM
  #6  
yeah i checked dtcs with evoscan about an hr ago. no issues at all. immobilizer is disabled and set for 0004 in the immo section
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Sep 17, 2017 | 02:54 PM
  #7  
The car would still start with a bad map sensor or iat sensor. Even if the option was incorrect in the rom.
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Sep 17, 2017 | 02:55 PM
  #8  
So you have no spark? How about fuel? Have you used a noid light on the injectors?
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Sep 17, 2017 | 03:01 PM
  #9  
Have you checked mechanical timing?
Also your sure the crank sensor wheel is on correct?
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Sep 17, 2017 | 03:12 PM
  #10  
K


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Sep 17, 2017 | 03:15 PM
  #11  
Step 1. Check pin #1 of ignition coils. Should be white red stripe.
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Sep 17, 2017 | 03:35 PM
  #12  
Crank plate is on right. indent facing in. new crank sensor.

cam reluctor wheel is in right positon. New cam sensor.

Timing is spot on.

We have 12v power right to the coils and good ground. have continuity to ecu as well.
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Sep 17, 2017 | 05:31 PM
  #13  
What pin has voltage?
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Sep 17, 2017 | 05:32 PM
  #14  
Pin 1 is 12 volts constant ignition on and pin 3 is ecm voltage signal. Pin 2 is ground.
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Sep 18, 2017 | 03:08 AM
  #15  
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.
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