Holy shit I need help:

OK, so I went and hooked up my LM 2. Wide Band & OBD.

Well, my R4 controller software for my MAF Cali says, can not connect ECU (check power and/or conections). Calibrator has been in for bout a month or more and had no issues, ie.. CEL. So what could it be.

Any info or tips on trouble shooting is welcomed.

Thanks.

 

Is your truck actually throwing a SES light ? if so, I would just attempt to clear the code then attempt to clear it then run the program again and see what you get.

 

No codes. I just went back out to retry. Now the LM-2 is working perfect. It my R4 controller that keeps saying can not connect to ECU.

The LM 2 is fun though. Way more info than a scangauge and you can calibrate your Throttle position sensor among other things.

My AFR is around 13.6 at idle, and between 12.7 & 14.6 during driving normal. Not sure why the fluctuation (Need to study that). The LM 2 even shows my open loop, short term, and long term fuel trims. Which are all used to tune the URD MAF.

If I could just figure why the R4 controller cant connect I would be tuning away

 

OK, cancel this thread Im an idiot. I dont know how I missed this very important detail, but in order to tune your truck, you use a scan tool and wide band sensor. But, that good owe serial to usb cabel that is recommended, well that plugs into the calibrator. I actually have to open the calibrator and plug in.

So I guess I take the dumb ass bullet on this. Lets not have anyone else posting this question in the future, LOL...

Will post results tommorow night.

Laters.

 

Glad it was something simple Roxspin, good job. Can't wait to hear about your results.