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Thread: Dies after brief fire on cold start (Gas not E85)

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

    Dies after brief fire on cold start (Gas not E85)

    Solved a lot of issue so far with this car, the list is getting shorter and the worst of it is trying to cold start the car. Gasoline not E85 or anything, but cold if you crank it itll burp once, recrank might burp twice or run a second, recrank and run for a while die, then pick up fine the next time you crank it at least thats how it usually acts

    Pretty common E85 cars act like that, usually lean at cold start, but Ive tried adding and subtracting from the Cranking FA Mult tables to no avail. Tried throwing more and more startup airflow at it as well. No changes really. Tried adding subtracting timing cranking. No changes. Am I sitting on a max value for startup airflow cold? I wish there was a desired idle airflow and an actual value to see if there was a discrepancy over what it is trying to do
    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
    Senior Tuner
    Join Date
    Jun 2004
    Location
    Baltimore, Md
    Posts
    1,208
    Aggrevating thing is when i crank the car the scanner stops logging and the wideband restarts its warmup cycle so I cant get ANY data for the first 15 seconds of crank to run time
    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

  3. #3
    Quote Originally Posted by GrannySShifting View Post
    Aggrevating thing is when i crank the car the scanner stops logging and the wideband restarts its warmup cycle so I cant get ANY data for the first 15 seconds of crank to run time
    I Had The Same Issue And Was Able To Get A Log By Putting A Battery Charger On The Fuse Box. Why Does My Phone Cap The First Letter Of Every Word.....

  4. #4
    Advanced Tuner
    Join Date
    Jan 2009
    Posts
    792
    You definitely need to fix the 12v power situation so you can be logging the entire start, cranking and all. Your wideband and scanner power must be coming off of the wrong switched ignition feed so it's losing power in the crank position.

    Why is your ETC Scaler so high? What throttle body is on this? This is a ZL1 I'm assuming?

  5. #5
    Senior Tuner
    Join Date
    Jun 2004
    Location
    Baltimore, Md
    Posts
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    NW 102mm
    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

  6. #6
    Senior Tuner
    Join Date
    Jun 2004
    Location
    Baltimore, Md
    Posts
    1,208
    ideas?
    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