I just captured a waveform from my Cavalier which seems to have the same 6+1 type of system. My system is coil driven. It is not a Hall effect sensor. I know the thread is old, but here it is for reference. A0001DS.png In trying to find out what the reluctor looks like I found some pictures. Seems t...

dj1850.py dj1850.py Here is an update to the message decoding program. I added a field to the data definitions to indicate the source of the information. Mostly this is from the standard but it could also be me just guessing which is of course less reliable. I also put in some command line processi...

It is funny/frustrating but as soon as I got the OBDLink SX tool that could record messages with the ATMA command, the problem disappeared. Hasn't happened once since then. I joke that the car is possessed but it is probably cold related. I had a similar situation the previous winter where it was ac...

I have an old 2001 Chevrolet Cavalier that has an intermittent problem that seems like it might be a computer module going bad. The symptoms are that after turning the key off, dash lights will flash and relays click, etc. Sometimes it seems like it is shut down but maybe later in the night, the rad...