OBD2 -> OBD1 conversion, resistor mod in PCM to work with OBD 2KS
06-21-2003, 04:10 AM
#1
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Join Date: Feb 1999
Location: Montville, NJ, U.S.A.
Posts: 661
OBD2 -> OBD1 conversion, resistor mod in PCM to work with OBD 2KS
Hey guys, I have an OBD1 PCM for my 97 SS, and I want to be able to switch between PCM's without having to change the knock sensor. I was told that in the OBD1 PCM, I can solder bridge pins 21 and 22 together on the blue connector, and then run a 3.9K resistor from that point to ground? I am 90% clear on doing this, but I would really like to see a pic ,write up, or diagram of this done. Does anyone have this on a website, or can take a pic of this already done on their PCM? I really dont want to screw this up, I have already have had this PCM repaired once.
Nick
Nick
Last edited by NJLT1SS; 06-21-2003 at 09:32 AM.
02-20-2005, 08:27 PM
#3
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Join Date: Oct 2004
Posts: 87
Re: OBD2 -> OBD1 conversion, resistor mod in PCM to work with OBD 2KS
www.charm.net/~mchaney/knock.gif
might not be exactly what you're looking for, but it sounds like you've already got the right idea
might not be exactly what you're looking for, but it sounds like you've already got the right idea
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