Originally Posted by Chiburbian
Wow, thanks Chi, very detailed build thread. Man, I hope my stuff doesn't get that hairy! I am striving towards simplicity and reliability. Will certainly install grounds to the engine block for sure.!!
On another note, showing some progress with the MS. Well, I at least saw spark earlier today. Let's just say I had a "orientation problem" when I started the harness build, so stuff was not going where it was supposed to go... lol. So who knows what damage was done to the MS as all these signals were crossed. Felt like a idiot, needless to say!
I did a bunch of *stuff* to it and ended up frying R20. After replacing it, I would then run TunerStudio and when I increased RPM, the MS would go offline. I could see that I2 on the stim was not firing. Figuring that R20 was fried, pulled out the DMM looking for other components that may have been fried as well. Then I came across Q15 which was installed *** backwards!!!
After fighting with removing the solder from the through holes, (heating up and using a can of air to blow that **** out works wonders..., my desoldering wick didn't do squat) and popping Q15 back in I2 was good.
After that, I popped the MS back into place, reloaded f/w, basemaps, etc. First thing I expected to see was the tach work, but it didn't. I then pulled out the DMM to check for voltage at the CAS sensor inputs. After I did that for some reason the tach started working!
Maybe this is a sign of the grounding issue? or reset issue I have heard about?
The car seemed to want to start with a fire or two here and there... but that's about it.
So definitely making some progress...