LS3 conversion wont start! Need some help.
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Teching In
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LS3 conversion wont start! Need some help. I just completed my LS3 E-Force swap in my 68 Firebird and can't get it to start.
I am getting 68 psi of fuel pressure on the a-pillar gage and the gage on my regulator. I can here the fuel pump prime when I turn the ignition key. I also tried a spark tester between the coil and spark plug and got nothing. I tested for injector signal pulse and got nothing either. Can anyone give me some direction where to start? This is my first EFI swap so any help would be great.
Oh, I also hooked up my Actron OBD II and found no error codes.
Thanks,
Jeff
I am getting 68 psi of fuel pressure on the a-pillar gage and the gage on my regulator. I can here the fuel pump prime when I turn the ignition key. I also tried a spark tester between the coil and spark plug and got nothing. I tested for injector signal pulse and got nothing either. Can anyone give me some direction where to start? This is my first EFI swap so any help would be great.
Oh, I also hooked up my Actron OBD II and found no error codes.
Thanks,
Jeff
This is a Edelbrock setup ?.. have you tried calling there Tech line ? What ECM is being used ?
But if your not getting Plug Spark or Injector pulse.. would check the power to the ECM, that being the IGN power and that it is not cutting out. check the Grounds. check to make sure all sensor connectors are good.
Can't help much without more info on what works and what doesn't. What is getting power and when ...
BC
But if your not getting Plug Spark or Injector pulse.. would check the power to the ECM, that being the IGN power and that it is not cutting out. check the Grounds. check to make sure all sensor connectors are good.
Can't help much without more info on what works and what doesn't. What is getting power and when ...
BC
Thread Starter
Teching In
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No, its a LS3 from a 2010 Camaro SS & a E-force charge. The Harness and ECM are from PSI. I sent Jon an email and he responded to check the red wire off the ignition relay on his harness for constant power so I will start with that and report back. All grounds are good (Block to frame, harness to back of cylinder head, body to block, etc..) all connectors are good (new harness).
Thanks,
Jeff
Thanks,
Jeff
Thread Starter
Teching In
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Well, I still have no spark or injector signal. I switched the wire I had that was cutting out and now have confirmed 12v with key on and while cranking. I got it to fire up a few times but it would not run for more than 5-8 seconds. I plugged in my OBD II and had a P0690, I cleared it and tried to start again and now the OBD II wont read the ECM now.
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Teching In
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I have checked all of that. I have went as far as going right to the battery to power the ECM. I still get the same result.
