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lt1 oversensitive knock module

This is a discussion on lt1 oversensitive knock module within the LT1 forums, part of the Vehicle Specific category; I originally purchased a scan tool for gm vehicles. i replaced the knock sensor, and installed an LT4 knock module ...

  1. #1
    Junior Member
    Join Date
    Jul 2006
    Location
    alabama
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    black
    1996 camaro z28

    lt1 oversensitive knock module

    I originally purchased a scan tool for gm vehicles. i replaced the knock sensor, and installed an LT4 knock module (part number 16214681) and my problem is the scan tool is showing like 3-5 degrees retarded timing at idle. when i tap on the exhaust under the passenger seat, the engine almost dies. also when i slightly tap on the intake manifold, the timing is retarded so much, the engine almost dies. No exhaust rattling or leaks. its a 1996 TA, OBD1 installed, Lt1 engine, has hedders and lt4 hotcam kit. it has done this for a while now. if i slowly rev the engine, the scan tool shows no timing retard, but if i fast rev the engine, the scan tool shows max retardation. also crusing down the road, at about 1500rpm, timing is retarded about 7-15 degrees. what could be my problem? Any help would be greatly appreciated. im stumped..


    John

  2. #2
    Impounded
    Join Date
    Jan 2006
    Age
    39
    Posts
    28
    1995 Z28/SS

    Has it done this through a few tanks of gas or are you on the same tank still???

  3. #3
    Junior Member
    Join Date
    Jul 2006
    Location
    alabama
    Posts
    4

    black
    1996 camaro z28

    it has done this through 5 or 6 tanks of 93 octane

  4. #4
    Impounded
    Join Date
    Jan 2006
    Age
    39
    Posts
    28
    1995 Z28/SS

    Does your pcm have any kind of aftermarket tune on it? What are your engine temps like. Is there any way you can get datamaster so you can save a data log of your driving info

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