PCM Diagnostics & Tuning - made minor tune changes, now it starts and dies
04-03-2012, 06:21 PM
Hey guys, i posted this up on hptuners as well, just turbo'ed my car, and drove it 400 miles round trip to great lakes dragway. drove perfect the whole way, but now that i attempted altering the tune last night, it starts and dies. has fuel pressure, oil pressure, and it drove great three hours prior to adjusting the tune. All i did was alter the ve table, and added some timing. thats it. anyone have any ideas why it wont stay started?
04-03-2012, 10:09 PM
what did you change? loose ground? no codes set?
04-03-2012, 10:44 PM
The only changes were to the ve table and timing tables. didnt touch a single physical thing on the car. there is a chance its coincidence and something is wrong with the motor, but that would be a hell of a coincidence.... There were only two dtc codes, and both have been there since i had it running n/a last april.
go back and change them to what they were before see if its the tune change or something else
04-04-2012, 06:59 AM
I uploaded my previous file and it didnt change anything. i am suspection it might not be the tune, but everything i check under the hood looks good. was posting to see if i am missing something stupid....
04-04-2012, 10:45 PM
04-04-2012, 11:10 PM
Yup, full tank of E85, got it about 10miles before parking it before this happened.
04-04-2012, 11:15 PM
Battery and alternator good?
04-05-2012, 07:08 AM
Yeah, battery went dead, only because I was making changes and trying to start it over and over. Other than that they work great.
04-06-2012, 05:43 PM
Just a quick update, I got the car back running, the map sensor was not positioned correctly in the hole, I thought It was good but when I replaced it with another sensor i seen how off it really was. Car is back running now, just need drags so I dont get pulled over for wheel spin :)
Thanks for all the help,
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