Car flatlines at hard launch? cant figure out y
08-13-2011, 11:56 AM
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Car flatlines at hard launch? cant figure out y ok so heres what happened. i took my car to an 1/8th mile track to finally see how it runs. my car has been it the rebuilding phase for about 3 years i put in a ls2 402 and rebuilt the trans. i do a nice burnout, get the car ready to launch. mash the go pedal and all the lights on the dash lightup go blank. the motor at the same time revs up dies off then all of a sudden comes to life and takes of like a rocket. i was completely puzzled as to what happened. i asked my tuner he said it was a ground wire i looked over all my ground wires and cant find any problems. finally went back to the track to see if it would repeat itself and exact same thing. this time my friend said it looked like my car just shut completely off then came back to life. everyone i talk to says its a ground wire but i know all the ground wires r good the only thing i can possibly think of is the 3 ground wires in the back of the head on the driver side and i combined from 2 bolts to one bolt but that cant be it. please any info would help
08-13-2011, 04:57 PM
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A battery hold-down not doing its job will let the battery roll back
and short the post to the A/C dryer or the fenderwell. Look for
signs of that. Also look under the motor near the starter for
wires with the insulation burned off, I've got a few (they happen
not to be causing trouble at present). Anything that can swing back
and hit something, is suspect.
and short the post to the A/C dryer or the fenderwell. Look for
signs of that. Also look under the motor near the starter for
wires with the insulation burned off, I've got a few (they happen
not to be causing trouble at present). Anything that can swing back
and hit something, is suspect.
08-13-2011, 05:11 PM
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Had same thing happen to me a couple of years back. Turned out it was a PCM issue. Didn't figure this out until I ran into other problems down the road. Had to replace the PCM and haven't had that problem since.
08-13-2011, 07:05 PM
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A battery hold-down not doing its job will let the battery roll back
and short the post to the A/C dryer or the fenderwell. Look for
signs of that. Also look under the motor near the starter for
wires with the insulation burned off, I've got a few (they happen
not to be causing trouble at present). Anything that can swing back
and hit something, is suspect.
and short the post to the A/C dryer or the fenderwell. Look for
signs of that. Also look under the motor near the starter for
wires with the insulation burned off, I've got a few (they happen
not to be causing trouble at present). Anything that can swing back
and hit something, is suspect.
