LS1 swap to LT1 coolant Temp sensor wire?
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Teching In
Joined: Apr 2007
Posts: 8
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LS1 swap to LT1 coolant Temp sensor wire? Just wondering how does the LS1 send the coolant temp signal to the cluster? I just did a swap with a friend ls1 into lt1 95 Camaro and I can't figure out how the LS1 sends coolant temp signal to cluster, does it use pcm serial signal to feed temp 
? I know there is a yellow wire on blue connector at pcm that says "pcm signal out" but where does it come into the inside of the car? Don't think the LS1 c220/c230 connectors have it anywhere there?
Thanks.
I'd rather not install lt1 temp sensor and feed inside rather use the stock ls1 sensor.
? I know there is a yellow wire on blue connector at pcm that says "pcm signal out" but where does it come into the inside of the car? Don't think the LS1 c220/c230 connectors have it anywhere there?Thanks.
I'd rather not install lt1 temp sensor and feed inside rather use the stock ls1 sensor.
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
What year is the LS1 that you swapped in? The 98`s have a 3 wire sensor that hooks to both the computer and the cluster. The 99+`s use a serial data signal from the sensor to the computer and then the PCM sends the temp to the cluster as a serial data signal.
