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Thread: Issue with no start 98 Vette

  1. #1
    Senior Tuner
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    Issue with no start 98 Vette

    Coil packs are sparking, noid light pulses, plugs are wet with fuel, 160 psi cranking compression, 58psi fuel pressure. Tried another PCM, flashed it to known good SD program to eliminate maf, deleted VATS

    Ignition Voltage (SAE) reads .02 volts stays around there
    Ignition Voltage 11.5-12.0
    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
    Tuning Addict 5FDP's Avatar
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    Post the file.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
    Senior Tuner
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    Its a stock Corvette with a catback
    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

  4. #4
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
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    That doesnt help me.

    Seeing the tune can tell us if you failed the MAF correctly to make the car start like normal.

    If you have fuel and spark, then the computer should be just fine.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  5. #5
    Senior Tuner
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    Figured the timing could be out of wack, spark at the wrong time just as bad as none, chased bad reluctor wheel (loose and spun on crank possibly)

    The file was bone stock, I failed the MAF to the same result, issue ended up being guy put catback on made gaskets with no holes for the exhaust! Potato in the tailpipe... what a dummy.
    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