O2 Sensor Upgrade from LT1 to LT4 - WIRING - SmokinVette.com Forums
 
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post #1 of 3 (permalink) Old 09-06-2010, 07:24 AM Thread Starter
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O2 Sensor Upgrade from LT1 to LT4 - WIRING

We have installed an LT4 in our '93 LT1 Convertible and our tuner has recommended that we upgrade the O2 Sensors to the 4-wire heated LT4 Sensors, where the LT1 had a 1-wire sensor.

Has anyone done this or have the knowledge to assist us in where to tie the extra wires in? ...the ground is easy but there are two additional wires that go to the PCM which I doubt our earlier PCM even has an input need for them. email me and I can provide a link for the diagram of the LT4 sensors with extra wires circled

Any assistance would be greatly appreciated
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post #2 of 3 (permalink) Old 09-06-2010, 05:59 PM
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Do you not trust your tuner?

Heated O2 sensors are a good idea typically. If you have a stock exhaust and place them in stock locations, you really shouldn't have to.

If he's having a problem getting open loop, then yeah you need them. You hired the guy, trust him.


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post #3 of 3 (permalink) Old 10-04-2010, 09:42 PM
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o2 conversion

Hi,
I'm not allowed to post a link yet, so I put it in a PM
Good luck,
Rich

Last edited by rcsrich; 10-04-2010 at 10:30 PM.
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