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

Name that sensor

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Old May 5, 2004 | 10:30 AM
  #1  
TrouserSnake's Avatar
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From: Midland,Mi
Name that sensor

Its tucked behind the water pump in a little crevise not seen by the naked eye... You would have to be looking for it...

I cant find the right plug that goes in there...

Is it cruicial that this is pluged In?
Old May 5, 2004 | 11:06 AM
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Behind the waterpump almost hidden from view, but it plugs in from the top???????? Thats the opti.......
Old May 5, 2004 | 11:21 AM
  #3  
TrouserSnake's Avatar
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The Opti Is pluged.. In im pretty sure I did that as soon as put it on... But maybe.. just maybe I forgot.. Thanks Ill give it a second look
Old May 5, 2004 | 11:25 AM
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The Opti is a double plug setup....you plug the harness into the opti, and then plug the engine harness into the opti harness. You might have done one and not the other
Old May 6, 2004 | 02:48 PM
  #5  
Dave Feerst's Avatar
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yes, the opti harness is a 4 wire harness about 15 inches long, it goes into the opti in the spot where you described and it couples to the main wiring harness near the #6 intake runner.
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