DIYEFI.org Forum

I received a Spartan2 (Purchased on Amazon) back in January. I tried to install it. The LED flashed 2x then nothing. I sent a message to Alan and got a replacement pronto. Unfortunately, I have not had time to install the new one, yet. Alan was very responsive. Also have a replacement capacitor for ...

HelmutVonAutobahn wrote:I have seen replacing the tant on the back side of an LC-1 PCB revive a couple of units.

The one marked C12

On mine C12 is marked 47uf 10v. What maladies were fixed by replacing this cap?

Gearhead

Arrrrgh! It may not have been the LC-1 after all. Oh well. Went out to start the Saab on Monday (-5F) and it cranked slowly then started. I noticed it was running rough. Had too many things to do on Monday, so I dealt with it running rough for about an hour and a half in city traffic. My guess was I...

Well, I bought a spartan2 and new sensor, 17025. Should be here by new years as I got it through Amazon. Thanks to my work that gave me an Amazon gift card for Christmas! Anyway, I pulled the LC-1 out and put in the old NB sensor for the time being. I cannot get it to 'calibrate'. If I do disconnect...

Ghost from the past! :-D Welcome back! I've seen that rail to rail behaviour recently, and it turned out to be a bad connection in the power feed that would cause it to shut down as soon as it powered the heater. Took a while to diagnose as everything seemed OK on the surface. Solid after that was ...

OMG 33 pages?!? Thought I'd comment here. I have an LC1 been using it for 11 years! Every so often it looses calibration. If I try a free air recal, it will not do it. The result is oscillating between 10 and 20 AFR. I thought it was an old sensor. Got a new sensor. Same thing. Tried a hot recal (bu...

The two places they use it, which are reasonable places if not great, are boost solenoid control and idle control. All late model (1999+?) returnless fuel systems use PID control for the fuel pump. Don't forget clo2 as well. Only when you use a wide band sensor, though. Basically any control loop w...

Ok, I read it again and still do not see why these are different. It even has a different name. I like yours as it has just the name and a check box and is smaller.
Fred's Mine What am I missing?

Well, it sounds like we are on the same page. We need general usability. I agree that a scale may not be appropriate, it is just difficult to explain to someone else "Look at the off-yellow trace and see where it goes high. That is where I slid off the road and into the ditch." Much better...

legend ( some way in the graph to identify which trace is what variable )
X and Y axis ( numbers on the vertical and horizontal axis)

Gearhead