Hey guys,

I just got an LC-1 and I hooked it up got it powered did the free air calibration and connected it to the downpipe before the cat and hooked it to my interceptor.

I used slope of 3 and intercept of 7.3 which is what I was told to put on the interceptor to read the analog out of the LC-1 correctly.

Here's the problem.
Drove it around the block and at wot it reads 7.3 and at idle it jumps all around the place reading 7.3 to 14.6 to 13 to 22 to 11 and just keeps fluctuating.
Whats going on?

Thanks for the help!

 

....u screwed up!?! lol idk hope u get it fixed

 

Thanks for the words of wisdom Sean

Anyone?

 

thats weard!!!!!!! sounds like calibration is off. did you wait the 30 secounds after you calibration to start the car. i had my lc1 for a year now and not on problem only that the car runs rich at idle LOL

 

Hey thanks for the suggestion I actually thought about that a little bit ago but haven't had a chance to re calibrate. I did wait the 2 minutes to calibrate originally but when messing with the LM programmer before I first started it and when trying to program it I hit the reset calibration button thinking that was the program button and that is probably what happened. I'll have to test it later to find out. Thanks for the help!

 

well i hope it works out for ya but in know whos not hookin a wideband up for me haha jk i wanna see pics

 

The LM programmer came with no software instructions and when you tell it to program new info it just sits and does nothing so I assumed reset calibration was referring to the onboard program parameters not the actual free air calibration test.
Oh well you learn as you go

I'll get pics eventually.

 

Here is a problem that could have happened, Wideband sensors are very sensitive, so the high heat of our downpipe will blow the sensor, what you need to do (*mandatory for all cobalt SS/SC owners) is buy a flat sheet of copper about at least 2 by 2, drill a hole in the middle for the sensor to fit through and the threads but not the hex nut. Then take tin snips and cut each side of the copper flat stock to have fins, then bend the fins out slightly in opposite directions, you should have 4 fins 2 on each side. You now have a custom heat sink for your sensor. This happened 2 someone on this site, that lives near me, and also happened to me, but on my gf's turbo 2200 cav. Good luck.

For those who don't understand me here is a quick mock up.

 

Mine does the same thing. I also made my own heat sheild.

I think the problem has to do with how the LC-1 is wired. Are you using any of the same grounds/power sources as the Interceptor?

The problem is not with the scale and slope settings on your interceptor. I bought a G2 A/F gauge that is supposed to work directly with the LC-1 and it does the same thing.

 

I got the standalone wideband kit and the only issue i had was of my own making... I wired the sensor into a 12v source that was used for a heater fan and...made it switched. i burned out the sensor because i forgot about the switch and left it on. other than that, the kit worked great. never had any cal issues.