LT1-LT4 Modifications 1993-97 Gen II Small Block V8

97 trans am with a 95 computer

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Old Aug 7, 2011 | 08:01 PM
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Default 97 trans am with a 95 computer

i put a new knock sensor in the car for a 97, now it sets the esc light for the knock sensor, i got the tune from ion soltan but he is on vacation and wont be back for 2 weeks. so i dont know if i need a 95 knock sensor or if the 97 sensor is right. but i have a cruise to go on with it in 2 days and i need to get it fixed, i am wondering if there is anyway to use a resister to make it appear that it doesnt have knock until i get back. right now it is pulling a full 8 degrees.
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Old Aug 7, 2011 | 08:27 PM
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get 95 sensor and see if it changes. did u torque it down correctly?
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Old Aug 7, 2011 | 08:37 PM
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to use a 95 computer with a 97 knock sensor you need to open up the computer and on the circuit board solder pins 21 and 22 together on the blue connector and solder a 3900 ohm 1/4 watt resistor between pinn 22 and pin 1(ground). not sure why pins 21 and 22 need to be connected because 21 is unused but thats what i was told and it works.....
Attached Thumbnails 97 trans am with a 95 computer-pcm-mod-3.9k-ohm-resistor-location.jpg  
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Old Aug 7, 2011 | 09:27 PM
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Originally Posted by Badazz 97 TA
get 95 sensor and see if it changes. did u torque it down correctly?
ya, 14 ftlbs. i guess ill pick up the 95 sensor tomorow and see what happens
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Old Aug 7, 2011 | 09:42 PM
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With a 95 computer you will need the OBD-I sensor (93-95) or do a computer modification.
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Old Aug 7, 2011 | 09:44 PM
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thats wat i figured, but i got my computer from madz28 so i wasnt sure if he made the mod or if i needed the 97 sensor. it sits at -8 degrees then if i rev it it goes up to 0 degrees of retard.
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