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Thread: Why is this 6L not locking up cruising

  1. #1
    Senior Tuner
    Join Date
    Jun 2004
    Location
    Baltimore, Md
    Posts
    1,208

    Why is this 6L not locking up cruising

    Missing something but it never seems to want to lock up, I can command it to manually no problem
    Attached Files Attached Files
    Factory Stock 97 SS M6 13.51 @ 104.3 mph
    Stock Longblock LS1 w/ 233/238 P.S.I. Cam
    10.81 @ 126.9 Full interior, six speed on 275 radials, a decade ago

    '99 TA trunk mounted 76mm 6 Liter
    9.0s in '09 @ 153 MPH

    Turbo 5.3 Volvo 740 Wagon
    32psi and still winding out 5th on the highway somewhere

  2. #2
    cammed? need to modify misfire tables or else lockup wont engage

  3. #3
    Advanced Tuner veee8's Avatar
    Join Date
    Apr 2006
    Location
    Raleigh, NC
    Posts
    449
    Also check the brake switch input. Sometimes they are backwards, if you lightly touch the brake pedal while in cruise range, and it locks up, then the brake switch is working backwards the what the ECM is looking for, Common on older conversions.
    www.crawford-racing.com
    Home of the original and best selling CR-Fueler plug and play port injection controller kits for all GM Gen V direct injection platforms.

  4. #4
    Senior Tuner
    Join Date
    Jun 2004
    Location
    Baltimore, Md
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    Quote Originally Posted by luisdavid11 View Post
    cammed? need to modify misfire tables or else lockup wont engage
    Dammit, i turned them all back on to diagnose a misfire from a shit coil pack relocation harness and forgot to turn back on!
    Factory Stock 97 SS M6 13.51 @ 104.3 mph
    Stock Longblock LS1 w/ 233/238 P.S.I. Cam
    10.81 @ 126.9 Full interior, six speed on 275 radials, a decade ago

    '99 TA trunk mounted 76mm 6 Liter
    9.0s in '09 @ 153 MPH

    Turbo 5.3 Volvo 740 Wagon
    32psi and still winding out 5th on the highway somewhere