ECM (OBDII) program help.
callens
04-03-2007, 01:53 PM
OBD2 conversion.
I have a 1995 (OBDI) Oldsmobile Delta 88 that I have converted to 1997 OBD2 (yes, I replaced the complete wiring harness) and had it programmed to be 1998 or 1999 Delta 88. I had to us a VIN that maintained the ABS, Theft Deterrent and fuel pump control (one speed). It took many months of investigation to do this.
First, how can I find out what VIN the ECM was flashed with, I gave the guy a list and he never told me which one he used.
Second, the engine was off a 2000 GM test auction, no ID was ever stamped on the block, but the transmission mentions that it has a 3.0X final ratio (I though it was 1 but I have to look up the picture of the plaque) which the ECM is not programmed for. It is programmed for a 2.X final ratio. This make the torque converter stay at almost full pressure shifts, yeah it jolts the dash ever time.
Third, how can I get the ECM flashed with the different ratio to stop the slamming into gear and keep the compatibility for all other components?
I suspect GM will have to make a special VIN program for this to work. But who and where can I get help?
I have a 1995 (OBDI) Oldsmobile Delta 88 that I have converted to 1997 OBD2 (yes, I replaced the complete wiring harness) and had it programmed to be 1998 or 1999 Delta 88. I had to us a VIN that maintained the ABS, Theft Deterrent and fuel pump control (one speed). It took many months of investigation to do this.
First, how can I find out what VIN the ECM was flashed with, I gave the guy a list and he never told me which one he used.
Second, the engine was off a 2000 GM test auction, no ID was ever stamped on the block, but the transmission mentions that it has a 3.0X final ratio (I though it was 1 but I have to look up the picture of the plaque) which the ECM is not programmed for. It is programmed for a 2.X final ratio. This make the torque converter stay at almost full pressure shifts, yeah it jolts the dash ever time.
Third, how can I get the ECM flashed with the different ratio to stop the slamming into gear and keep the compatibility for all other components?
I suspect GM will have to make a special VIN program for this to work. But who and where can I get help?
xeroinfinity
04-04-2007, 09:18 AM
it'll probly take a GM Tech tool to flash the ECM.
Unless you know someone with software that can hack the ECM.
Good Luck
Unless you know someone with software that can hack the ECM.
Good Luck
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