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

Do I NEED 02 Sims?????

   
Old Nov 18, 2003 | 11:52 PM
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95patriotZ
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Joined: Apr 2003
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From: Wisconsin
Do I NEED 02 Sims?????
I just gutted my cat and read that I need 02 sims since I did that. Is it true? What will happen if I don't get them? Just an SES light, or something more? Any insight would be great!!!!
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Old Nov 18, 2003 | 11:56 PM
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CrippleFightin
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From: Plainfield IL
For the 2 after the cats, NO you dont NEED them....only way you NEED them is if you cant stand looking at the Service Engine Soon light...
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Old Nov 19, 2003 | 12:39 AM
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94GrayV6
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From: Orlando, FL
Isn't your car OBD1? You only have 2 sensors, and both are before the cat right? You need both those 02s.

O2 simms are only for OBDII cars (4 O2s).
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Old Nov 19, 2003 | 01:19 AM
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revtime
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You only need O2 sims for OBD2 cars that no longer have cats, they trick the PCM into thinking that the cats are still there and are functioning properly.
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