obdI and obdII

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Jun 10, 2009 | 06:21 PM

luckyou03

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Joined: Mar 2005

Posts: 1,076

From: Memphis, TN

obdI and obdII

I have a friend that has an lt1 from an unknown year 94-96 impala/caprice ect and he is wanting to know if it is obdI or II he still has all the wiring with the motor. What is a place to check?

Jun 10, 2009 | 06:50 PM

ACE1252

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Joined: Mar 1999

Posts: 2,068

From: Kernersville, NC

If it has a crank sensor in the bottom of the timing cover...it is OBDII, if not then it's OBD I.

Jun 11, 2009 | 06:54 AM

DAVE00

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Joined: Oct 2004

Posts: 809

From: Houston, TX

Also check for the O2's if he has 2 only then OBDI and if he has 4 (2 before cat and 2 after) then OBDII.

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