RegisterSearchFAQMemberlistUsergroupsLog in
Reply to topic Page 1 of 1
RCP/Mk3 causing OBDII interference
Author Message
Reply with quote
Post RCP/Mk3 causing OBDII interference 
Hi!

I have a RaceCapture Pro/Mk3 in my 2004 Mazda RX8 race car. I have had some trouble getting OBDII and CAN PIDs working on it. Additionally, the car has refused to rev above 8k, hitting a wall at that speed and showing signs of some electrical problem. I've really been pulling my hair out over this.

Today I hooked up a nice OBDII code reader what will show me the PIDs live. With the engine off and key 'on,' everything looks fine. When I turn on the Pro/Mk3, the PIDs go haywire. The readings are all over the place, and even PIDs marked 'N/A' show funny readings.

Same thing when the car is running, of course. And now I find out that the car will run all the way up to the normal redline with the Pro/Mk3 turned off.

I wonder what I've hooked up incorrectly. The only four wires connected on the Molex are power, ground and CAN high/low. What might I have done wrong? Do I need to change settings in the Pro/Mk3?

Thanks!


_________________
TT5 Mazda RX-8
View user's profile Send private message
Reply with quote
Post  
Okay I seem to have tracked the problem down. The OBDII PIDs I had set were not using 'passive mode' in RaceCapture. Setting all of them on passive seems to fix the problem entirely. I still need to make sure the car runs correctly with the Pro/Mk3 turned on, but I feel like this should work. It's not messing with the OBDII PIDs the way it was before.


_________________
TT5 Mazda RX-8
View user's profile Send private message
Reply with quote
Post  
Glad you figured it out!


_________________
Brent Picasso
Founder, Autosport Labs
Facebook | Twitter
View user's profile Send private message Send e-mail
Display posts from previous:
Reply to topic Page 1 of 1
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum