lexlslove Posted September 13, 2010 Share Posted September 13, 2010 I recently had my check engine light come on my 1993 ls400. I noticed however that as I drive and accelerate the check engine light goes away. I then read the codes and saw the codes for the throttle position sensor and No. 2 knock sensor. Looking at lexls, I believe that I can do the TPS by myself but I have no idea where the No. 2 knock sensor is. A few months back, while changing out a bad starter, with the help of a mechanic friend, I changed a knock sensor out. So can anyone tell me where to find the NO. 2 knock sensor? Is the TPS and Knock related in a way that could cause one to "set off" the other? Quote Link to comment Share on other sites More sharing options...
1990LS400 Posted September 14, 2010 Share Posted September 14, 2010 See attached diagram -- both knock sensors are highlighted. Quote Link to comment Share on other sites More sharing options...
lexlslove Posted September 19, 2010 Author Share Posted September 19, 2010 See attached diagram -- both knock sensors are highlighted. Thanks i'm sure this will be extremely helpful. Quote Link to comment Share on other sites More sharing options...
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