Need help - car dead!
Thread Starter
Race Director
Joined: Jun 2001
Posts: 10,956
Likes: 682
From: Marlboro country MA
Need help - car dead!
Woe to him who has a little knowledge. I have a 383 stroker, which until today was running fine. I wanted to do a little tuning on the VE tables, nothing too radical. I bought a Pocket Programmer 2, an ALDL adaptor cable, DataMaster to read the car while running, and TunerCat with the appropriate $DA2 definition file for my ECM. I took out the chip that my tuner, SloRVette, had made and carefully copied the bin file to my hard drive. I made sure that the bin file was OK, since I can open it in TunerCat and make changes (to a copy of the file). I used the Pocket Programmer to erase the 27SF512 chip and re-programmed it with the altered file. I know enough to start the device location at 08000 to account for a 32K file in a 64K device. I can even re-download the file from the chip and read the file in TunerCat, so everything should be OK.
But it isn't. When I insert the chip in the holder, attach the MemCal, and load it into the ECM, I get a SYS error with the fans running, symptomatic of a hardware failure. The MemCal by itself is OK, no error, but I can't run my 383 on the original code.
What am I doing wrong? My car is dead in the garage unless I can get a working chip back into it.
But it isn't. When I insert the chip in the holder, attach the MemCal, and load it into the ECM, I get a SYS error with the fans running, symptomatic of a hardware failure. The MemCal by itself is OK, no error, but I can't run my 383 on the original code.
What am I doing wrong? My car is dead in the garage unless I can get a working chip back into it.
Last edited by MTVette; Jul 31, 2008 at 10:03 PM.
Thread Starter
Race Director
Joined: Jun 2001
Posts: 10,956
Likes: 682
From: Marlboro country MA
In any event, I found a work-around, so I'm back on the road. I posted the details on C4 Tech/Perf.
