LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

How to test opti off the car?

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Old Oct 18, 2006 | 07:31 PM
  #16  
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Re: How to test opti off the car?

Originally Posted by Mtrhds94Z
Make SURE that you ground the opti itself [touch the aluminum base ear to ground, or use a jumper etc]or it won't work....
ok so if i do the opti spark test, connecting a spark plug, the harness and coil up and having the ignition in the on position, i also need to have the opti grounded too?
because i know one of my optis is good and that could eb a reasonb as to why it didnt spark because i didnt have the opti grounded

I also just did a test on the harness, i checked the ohms on the wires, they read.6ohms on all, and with a 12 v current throught hem all they read all fine.... so current flows and there is no apparent resistance (but then again they werent hot)... oh yeah, i have no clue about wireing hahaha but thats osme stuff i did, so base on my "findings" my opti on the car car is messed up i just need to see whats up with the 2 optis i have on my garage floor

the harness also looks BRAND NEW, so nope no rats
Old Oct 18, 2006 | 07:45 PM
  #17  
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Re: How to test opti off the car?

well pee on me, i just tried the both again and grounded even the opti and the little punk wouldnt spark for me!!!! man alaive now i think i have to buy another opti!!!!
Old Oct 19, 2006 | 04:58 AM
  #18  
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Re: How to test opti off the car?

With KOEO, do you have 12 volts when measured from the pink/black wire to the red wire?
Old Oct 19, 2006 | 11:49 AM
  #19  
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Re: How to test opti off the car?

Originally Posted by speedygonzales
With KOEO, do you have 12 volts when measured from the pink/black wire to the red wire?
KOEO is the key on the on position right? well then yes i do measuring from the ICM harness
Old Oct 20, 2006 | 05:34 AM
  #20  
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Re: How to test opti off the car?

Yes key on engine off. I was refering to 2 of the 4 wires going to the opti not the ICM.
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