LC-1 works...most of the time
#1
Slowest Progress Ever
![](/mt2011/images_td/ranks/supporter1.gif)
Thread Starter
iTrader: (26)
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 6,028
Total Cats: 304
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
So I have used my LC-1 for about 2 years now, it uses a G3 gauge and not a digital readout. It has worked perfectly since I installed it, until lately. The issue I have is I'll start my car, it'll work fine, I'll drive my car and shut it off somewhere. I'll go to start it up again, and the LC-1 gauge will read fine again, but randomly where I park somewhere and shut the car off and start it back up, the gauge will read all the way lean like it's not even functioning at all. Then the next time I shut the car off and start it back up, it'll work fine. It never did this before, and I checked all the connections. What would cause this? Could the controller itself be going bad?
#4
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
The lc-1 I have in my Subaru does exactly the same thing, except it will peg to rich, not lean, on a narrowband gauge that I inverted and scaled the output to work with the wb. It seems to happen only when it is hot outside. 9 out of 10 times it works okay when it's hot, so I don't let it bother me much.
#6
Slowest Progress Ever
![](/mt2011/images_td/ranks/supporter1.gif)
Thread Starter
iTrader: (26)
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 6,028
Total Cats: 304
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I don't have my LED hooked up, so I have no idea. It works fine 95% of the time. If I start it cold, it's fine. it seems like when it's hot after a few restarts (gas station shut off, fill up, and then restart) sometimes I'll turn the key, watch the gauge reset, and then I'll crank the car, and it just reads all the way rich. I said lean before, but I was wrong, it's all the way rich.
#7
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
How did you guys wire yours?
When I first got it and calibrated it, it was perfect. Then I tried to calibrate it again because it was just flashing 7.4 and then it worked but it indicated everything richer than it should have been. I tried to calibrate it again and it still just says 7.4 but will randomly show odd numbers but still shows 21.9 whenever I let off over 4k rpm like it did when I first got it.
When I first got it and calibrated it, it was perfect. Then I tried to calibrate it again because it was just flashing 7.4 and then it worked but it indicated everything richer than it should have been. I tried to calibrate it again and it still just says 7.4 but will randomly show odd numbers but still shows 21.9 whenever I let off over 4k rpm like it did when I first got it.
#8
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Mine has done it to me twice in the last month or so when it is really hot. I do have the LED hooked up. It will go through it's heater sequence (don't know why it needs the heater on a hot start) then peg rich. It flashed code 3 once and code 4 once. Both times it was fine after the next restart. I'm not going to worry about it, I think it just gets itself too hot
Thread
Thread Starter
Forum
Replies
Last Post
Zaphod
MEGAsquirt
47
10-26-2018 11:00 PM