Jump to content
SAU Community

Blown Power Fc Caused By Afm Miswire... Shoot The Electrician!


Recommended Posts

What a sad day =( a week or 2 away from recieving my new turbo kit n i recieved my z32 afm, n i drew up a wiring diagram for a electrician mate to wire up so i could keep both plugs of the afms so i could use one or the other

So he connected the 12V power wire from the car to the signal wire..

took it for a spin with the standard afm.. sweet.. swapped afms plugged in the z32 n it came up 5112mV's on the airflow on the power fc..

5 hours later worked out the power fc was semi dead.. it still turns on and all just wont start the car and the 12V wire to the afm is only putting out 6.8vs, and one of the relays in the back of the car continues to click on and off

standard ecu car starts fine.. and the relay makes no sounds...

so if anyone is a whizz with electronics.. or would know a place that is either familiar with the power fc or possibilibly might be able to fix it plzzz let us know!!

couldnt sleep so i went thru the entire car checking everything =P

found a blown fuse swapped it with the defogger... n she started

didnt even think to check the fuses as the standard ecu started the car fine

Had the same problem on Monday. Thought I was up for a new ECU, even the RAC guy didnt know what the problem was... Thanks to SN1P3R and her boyfriend, we found the blown fuse and the car is back on the road!!

Moral: ALWAYS check your fuses!!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Hi, SteveL Thank you very much for your reply, you seem to be the only person on the net who has come up with a definitive answer for which I am grateful. The "Leak" was more by way of wet bubbles when the pedal was depressed hard by a buddy while trying to gey a decent pedal when bleeding the system having fitted the rebuilt BM50 back in the car, which now makes perfect sense. A bit of a shame having just rebuilt my BM50, I did not touch the proportioning valve side of things, the BM50 was leaking from the primary piston seal and fluid was running down the the Brake booster hence the need to rebuild, I had never noticed any fluid leaking from that hole previously it only started when I refitted it to the car. The brake lines in the photo are "Kunifer" which is a Copper/Nickel alloy brake pipe, but are only the ones I use to bench bleed Master cylinders, they are perfectly legal to use on vehicles here in the UK, however the lines on the car are PVF coated steel. Thanks again for clearing this up for me, a purchase of a new BMC appears to be on the cards, I have been looking at various options in case my BM50 was not repairable and have looked at the HFM BM57 which I understand is manufactured in Australia.  
    • Well the install is officially done. Filled with fluid and bled it today, but didn't get a chance to take it on a test drive. I'll throw some final pics of the lines and whatnot but you can definitely install a DMAX rack in an R33 with pretty minor mods. I think the only other thing I had to do that isn't documented here is grind a bit of the larger banjo fitting to get it to clear since the banjos are grouped much tighter on the DMAX rack. Also the dust boots from a R33 do not fit either fyi, so if you end up doing this install for whatever reason you'll need to grab those too. One caveat with buying the S15 dust boots however is that the clamps are too small to fit on the R33 inner tie rod since they're much thicker so keep the old clamps around. The boots also twist a bit when adjusting toe but it's not a big deal. No issues or leaks so far, steering feels good and it looks like there's a bit more lock now than I had before. Getting an alignment on Saturday so I'll see how it feels then but seems like it'll be good to go       
    • I don't get in here much anymore but I can help you with this.   The hole is a vent (air relief) for the brake proportioning valve, which is built into the master cylinder.    The bad news is that if brake fluid is leaking from that hole then it's getting past the proportioning valve seals.   The really bad news is that no spare parts are available for the proportioning valve either from Nissan or after market.     It's a bit of a PITA getting the proportioning valve out of the master cylinder body anyway but, fortunately, leaks from that area are rare in my experience. BTW, if those are copper (as such) brake lines you should get rid of them.    Bundy (steel) tube is a far better choice (and legal  in Australia - if that's where you are).
×
×
  • Create New...