MSefi.com read only forum (Jan.15,2018)

I put a new motor in my truck because the old one was pretty tired. After the motor was in I was driving it and the motor torque twisted the motor up and the fan hit my radiator hose and cut it. Coolant went everywhere, but I was able to get it to a parts store before it got too hot. I changed out ...

Thanks to all that tried to help. It turns out the issue was vapor lock, but it only occured when the temp rose above 90 degrees. My fuel filter is frame mounted and apparently too close to the exaust. Ill be moving it today and that shouldnt be an issue anymore.

I do have another issue that I ...

I read that again and it looks confusing. When the truck would not start, it would see RPM in blips. When it started, it read RPM fine. Im running an HEI and the RPM wire is attached to the RPM output spade on the distributor. It has not changed throughout this situation and I never saw RPMs drop ...

I left the battery on the charger last night because it had gotten run down from trying to start. After some more trying today it started. Great, but its probably going to stick me again. I took another datalog when it started. Let me know if there is anything I can improve. It was reading RPMs in ...

Thanks, Matt. I did mess with the relay board when it stuck me the first time and must have pulled the wire out without realizing. The stim worked exactly as it should on all inputs. The IAT works now that I re-inseerted the wire and secured it, but the truck still wont start. I did a pull check on ...

I also wanted to point out that my intake air temp never comes off 70 degrees no matter what temp it is. Saturday was in the 80s and it said 70. I replaced the sensor with another one I have a recalibrated with the same results. I didnt put them on a meter, but I doubt they are both bad.

Thanks for the help, Lance. I replaced D19 with a 5.6v zener, but it didnt resolve the issue. I am running an MSII 3.0 with a 3.01 processor and updated to code version 2.905. It stops running randomly. It failed on friday night in the middle of running an errand and I went out the next day and ...

This just happened to me this past weekend. This last time it was running and I got a few blocks down the road then it died. I couldnt get it restarted. It seems like it wants to start, and if it does, there is no power and it dies pretty soon after. It has done this to me twice and both times it ...

Thanks, Lance. That makes sense. I guess I have to do some more digging to do to figure out why I lost my AFR.

I have been running my truck for a couple of months now with no problems. Its a 350 running a MPFI setup with an LC1. I got it tuned with tuners studio and drove it (30 miles each way) to work to see what kind of mileage I was getting. On the way back while driving I lost AFR. It was tracking and ...

Hi,
I have a 350 sbc that I put an MPFI system with the megasquirt controlling it. I got it running and drove it around a couple of times. I was ready to move on to tuning when something changed. I was cleaning up(re-routing, bundling, tie wrapping) the wiring in the cab for the wideband(LC1) and ...

I had a similar problem because I left the jumper between pin 12 &13. It didnt say to remove it anywhere in the build instructions, so I didnt. Just and FYI for anyone who is also having this issue.