I've been in, out, around ,and throughout my mini for the past few months from timing chain, to oil pump, to control arm bushings.
Now I'm 500 miles away from home (Upstate NY) broke down in virginia no tools. Found the culprit or so I thought. My down stream o2 had rubbed on the floor thanks to my crappy aftermarket cat. So I replaced it after breaking down at 5am and waiting for advance to open at 730..
Boom! Done back on the road!
Fast forward 3 hours later messing with a boxster, I hit 100mph car shuts off. Pull over on i-95 change the fuse again. Good to go!
Do a quick pull to 100 and pop goes the fuse.
I have a steady supply of 15a fuses but I can't keep doing this all the way back to NY FROM DELTONA FLORIDA!

 

Admins pls delete this double post

REMOVED THE DUPLICATE POST

 

Well the obvious... stop going over a buck...


If that isn't the issue, you are going have to get home to troubleshoot where the issue is.


Looks like F3 is: Camshaft Position Sensor/O2 Sensor(s) both/Solenoid Valve, Fuel Tank Ventilation/Relay K19 Control Power


So more than likely I would guess the O2 Sensor wire is grounding out spiking your power and blowing the fuse. But that is only a guess. I would want to double check all the wiring anywhere near the exhaust.


Best of Luck.


Motor On!

 

I replaced the worn through sensor! Still popping fuses!

 

You are going to have to check the electrical system up stream from the O2 sensor, something else between the sensor and the ECM has to be screwed up. (most likely)


Historically I would build a remote circuit breaker and insert it into the F3 fuse socket with the circuit breaker within reach so as I was trouble shooting the system as the circuit breaker pops, I could reset it and continue to trace the wiring without constantly replacing the fuse.


The first time I did this was when I was trying to troubleshoot an issue with a different make of car and the issue it had was a shorting of a circuit that caused the Flexible Printed Circuit Board (FPCB) to fry... the cost of the FPCBs was prohibitive to swapping them out like your fuses.


I have the opinion tracing electrical issues is the most time consuming job you can do, so much so that I created a Bumper Sticker that reads " MAGIC now more reliable than Electronics"


Best of luck.


Motor On!

 

I got into it a little bit today while stopping in NC heading back to NY. like I said anything over 110mph and it pops the fuse with NO CODES!
all I can think to do is replace everything. All the wires I can trace in loom looks good, and I have no power shorts that I can find with my autozone test light with the intercooler taken off and my whole engine harness unlocked. Yay!

 

Perhaps someone is trying to tell you to slow down.

 

Thanks

 

Was in Florida last week. On the way down I saw an accident with a man laying next to the truck that he was riding in. Then on the way back had to divert off I95 about 2 miles from where I saw the accident going down. Pulled up the Brunswick paper on line and noted that the guy died that I saw and that on the way up a fatality earlier in the day had closed the road.

There is a place to drive your car fast just as there is a place to use your cell phone but neither should involve driving on an interstate. Just my two cents.

Your ground problem may be a short due to vibration.