I just got datamaster installed and running in my 93 Camaro. The motor is a new 383 that I built and got running a few weeks ago. The other day I logged about 10 minutes of easy driving in Datamaster just to get a feel for how the car is running.

The problem is that every third frame or so of data in Datamaster has the 'Data Err' light on. Also, during the drive if I monitored the DTC codes, it seems like every DTC code is hit at least once. There is only 1 code (code 26) that is permanatly set since i removed the Air pump and haven't programmed it out yet.

I can email the Datamaster file to anyone that would like to take a look at it. I'm just wondering why I keep getting the Data Error flag and also why it seems like the computer is randomly outputting DTC codes and not storing them?

Thanks for any help,
Rob

 

I wonder if that would mean you have some sort of ground problem or possibly a bad ecm?
Have you done a search to see if anyone else has had this problem?

 

Well, I believe I might have found the problem. I was speaking with one person who had the same problem an for him it turned out it was caused by using a power inverter.

I'm assuming I have the same problem since my data cable and power inverter are laying together on the floor. There must be interference from the power inverter getting picked up by the data cable.

-Rob A.

 

Hmmm..I use a power inverter that I got at walmart and I've never had a problem.
Glad you found your problem though!

 

That happened to me one time and it turned out I was getting low voltage Alt was going out, got it rebuilt and no more prob.