OBD I conversion

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Feb 11, 2007 | 11:47 PM

mcssmostwanted

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Joined: Mar 2006

Posts: 227

From: Chesterfield, Mi

OBD I conversion

i recently purchased a 95 obd I pcm for my camaro..

Are they just plug and play so to speak or is there any modification needed to use one? i read somthing about soldiering somthing to another thing? sorry about being vague!

thanks for any help...

dan

Feb 12, 2007 | 01:29 AM

sbs

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Joined: Feb 2004

Posts: 1,154

From: VA

You need to change to the OBD1 knock sensor.

Feb 13, 2007 | 11:03 AM

mcssmostwanted

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Posts: 227

From: Chesterfield, Mi

is that the lil chip in the pcm?

Feb 13, 2007 | 09:38 PM

mcssmostwanted

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Posts: 227

From: Chesterfield, Mi

Ttt

Feb 14, 2007 | 11:54 PM

Injuneer

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From: Hell was full so they sent me to NJ

Quote:

Originally Posted by mcssmostwanted

is that the lil chip in the pcm?

No. The knock sensor is screwed into the block drain plug on the passenger side of the block. The OBD-II sensor has a 100Kohm resistance. OBD-I has a 4.5Kohm resistance. You either have to swap the sensors, or add a resistor in the PCM. The "lil chip in the pcm" is the knock module and the same one is used for OBD-I and OBD-II.