Jump to content
SAU Community

Power Fc Problems (new One)

BHR_GTR

By BHR_GTR,
in Engines & Forced Induction

 Share

Recommended Posts

BHR_GTR Newbie

BHR_GTR

Posted
Posted

HELLO EVERYONE,

THIS IS THE FIRST TIME A POST SOMETHING ON THIS FORUM, BUT HAVE ALWAYS BEEN A READER.

I HAVE RECENTLY ECOUNTERED A PROBLEM WITH A POWER FC. AND WAS WONDERING IF ANYBODY HAD ANY IDEAS.

I PURCHASED Z32 AFMS TO INSTALL ON MY RB26 AND HENCE I GOT THE POWER FC IN ORDER TO BE ABLE TO TUNE IT FOR THE NEW AFMS. THE PROBLEM WAS THAT THE AFMS WIRING TO THE RB26 INSTRUCTIONS WAS IN JAPANESE AND THEREFORE I TRIED WIRING THEM WITHOUT THE INSTRUCTIONS. AS A RESULT, I GUESS I DID THE WIRING WRONG, AND SOMETHING HAPPENED TO MY POWER FC, A SERIOUS CLICKING SOUND IS COMING FORM THE RELAYS BOXES NEXT TO THE ENGINE AND THE ONE IN THE TRUNK AND THE POWER FC JUST GETS STUCK ON THE START UP SCREEN ON THE COMMANDER.

WHEN I PUT THE ORIGINAL ECU BACK THE CAR RUNS FINE (WITH THE ORIGINAL AFMS OF COURSE).

BEFORE TRYING TO WIRE THE Z32 AFMS I HAD THE POWER FC INSTALLED AND WAS RUNNING EXCELLENT FOR A FEW DAYS.

ANYWAY, I SENT THE THING BACK TO APEXI AND THEY TOLD ME THAT THE POWER FC WAS FINE AND NOTHING WAS WRONG WITH IT.

BEFORE I SENT IT I EVEN TRIED RUNNING IT WITH THE OEM AFMS AFTER THE Z32 AFMS INCIDENT AND IT STILL WOULDN'T WORK, SO I CAME TO THE CONCLUSION THAT THE PROBLEM WAS FROM THE POWER FC.

IF ANYONE COULD HELP I WOULD HIGHLY APPRECIATE IT PLEASE!!!!!!!!

Link to comment
https://www.sau.com.au/forums/topic/119491-power-fc-problems-new-one/
Share on other sites
danielson Proficient

danielson

Posted
Posted
HELLO EVERYONE,

THIS IS THE FIRST TIME A POST SOMETHING ON THIS FORUM, BUT HAVE ALWAYS BEEN A READER.

I HAVE RECENTLY ECOUNTERED A PROBLEM WITH A POWER FC. AND WAS WONDERING IF ANYBODY HAD ANY IDEAS.

I PURCHASED Z32 AFMS TO INSTALL ON MY RB26 AND HENCE I GOT THE POWER FC IN ORDER TO BE ABLE TO TUNE IT FOR THE NEW AFMS. THE PROBLEM WAS THAT THE AFMS WIRING TO THE RB26 INSTRUCTIONS WAS IN JAPANESE AND THEREFORE I TRIED WIRING THEM WITHOUT THE INSTRUCTIONS. AS A RESULT, I GUESS I DID THE WIRING WRONG, AND SOMETHING HAPPENED TO MY POWER FC, A SERIOUS CLICKING SOUND IS COMING FORM THE RELAYS BOXES NEXT TO THE ENGINE AND THE ONE IN THE TRUNK AND THE POWER FC JUST GETS STUCK ON THE START UP SCREEN ON THE COMMANDER.

WHEN I PUT THE ORIGINAL ECU BACK THE CAR RUNS FINE (WITH THE ORIGINAL AFMS OF COURSE).

BEFORE TRYING TO WIRE THE Z32 AFMS I HAD THE POWER FC INSTALLED AND WAS RUNNING EXCELLENT FOR A FEW DAYS.

ANYWAY, I SENT THE THING BACK TO APEXI AND THEY TOLD ME THAT THE POWER FC WAS FINE AND NOTHING WAS WRONG WITH IT.

BEFORE I SENT IT I EVEN TRIED RUNNING IT WITH THE OEM AFMS AFTER THE Z32 AFMS INCIDENT AND IT STILL WOULDN'T WORK, SO I CAME TO THE CONCLUSION THAT THE PROBLEM WAS FROM THE POWER FC.

IF ANYONE COULD HELP I WOULD HIGHLY APPRECIATE IT PLEASE!!!!!!!!

they probably only did a software level diagnosis, and didnt do a physical level hardware input check. i think you may have damaged an data input, causing a lockup in the pfc.... send it back and tell them EXACTLY what you did.... it may void the warranty, but its cheaper than buying a new unit.....cheers

BHR_GTR Newbie

BHR_GTR

Posted
  • Author
Posted
they probably only did a software level diagnosis, and didnt do a physical level hardware input check. i think you may have damaged an data input, causing a lockup in the pfc.... send it back and tell them EXACTLY what you did.... it may void the warranty, but its cheaper than buying a new unit.....cheers

danielson,

thanks for the reply, I actually did tell them in details everything that I did, much more than what i posted and I still didn't get it from them, and actually I'm contacting them through a third person, who is the dealer I got the Power fc from? you think I will actually end up buying another one! I just used it for 1 week :rofl:

danielson Proficient

danielson

Posted
Posted

hmm very interesting... do you know for sure the middle man passed on this info to apexi? because if he didnt, i think you could need a replacment unit...... start a thread for locals with a pdc, ask if you can borrow one for an hour or 2, and check your system against it...?? no other ideas mate, sorry... but its definately your pfc, couldnt be anything else

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Yep, sounds like a fruited unit.

Some electical fault somewhere.

Try grab someone else's PFC.

If that works then yours is broken, then you can get it repaired by someone if they know electronics well, or just buy a new one

paulr33 Grand Master

paulr33

Posted
Posted

powerfc is damaged, open it up and see what is damaged. it will be a burnt track on the board somewhere or possibly a burnt component. if its a burnt track try just resoldering the track or adding some copper wire to it

i blew up my ECR33 powerfc and simply attached some copper wire to the burnt track and its works fine (and has for 1 year now)

the proof is that it works with the stock ecu, so its on the money :cheers:

does the hand controller come up with garbabled characters on the apexi logo?

BHDave Grand Master

BHDave

Posted
Posted

Ive seen them do this in cars with engine swaps aswell.

Typically not enough power to the unit. I doubt this is your problem though but it wouldn't hurt to make sure you are getting power to all the right pins, and that the relays in the kick panel are working properly.

The factory ecu will work on the back up constant 12V, the power fc wont.

danielson Proficient

danielson

Posted
Posted (edited)

not all faults are visible to the naked eye paulr33, In MOST cases, its an ic or optocoupler that has an internal short. sometimes this is visibale by a burnt area. but not allways the case.

BHDave, lack of power wont nescisarly damage a unit. if it is running only 11.9v etc, it will draw more current to compensate for the power consumption, as these are internally regulated, and the regulator supplies a consistant voltage within say an input voltage of 10 to 30 volts.

cheers

Edited by danielson
r33_racer Grand Master

r33_racer

Posted
Posted (edited)

Check all the fuses in your fuse box under the driverside dash...im assuming they are in the same spot as a gtst.

I had a simliar problem in the race car...wired up the z32 afm wrong and it fried a fuse, car wouldnt start and but solenoids were clicking and pump was priming....changed fuse and rewired it correctly and it was good as gold.

Edited by r33_racer
BOOSTD Mentor

BOOSTD

Posted
Posted
The ECCS relay output from the PFC (PIN 16 i think) should go to earth on powerup. This pin ALSO provides the save data signal. If this pin doesn't goto earth you SIP is blown(chip in the PFC). If this is the case get it to me with a std RB25 ecu and I'll repair it for you for a small cash injection. I have fixed 5 PFC's to date, its a common problem. Usually the indication is flashing/pulsing handset and fuel pump, but that can be sort of fixed by rewiring the ECCS relay...however save data function on the PFC goes Tits up.
The Mafia Grand Master

The Mafia

Posted
Posted
Check all the fuses in your fuse box under the driverside dash...im assuming they are in the same spot as a gtst.

I had a simliar problem in the race car...wired up the z32 afm wrong and it fried a fuse, car wouldnt start and but solenoids were clicking and pump was priming....changed fuse and rewired it correctly and it was good as gold.

Hi Everyone.

I have done the EXACT same thing. The relays click like hell and scare the shit out of you into thinking that the powerfc is blown. The whole dash goes dim and flickers.

There is a fuse that will be blown. Change it, rewire the AFM's, and you'll be running fine. That what I did.

  • 1 year later...
Gts-t Grand Master

Gts-t

Posted
Posted

Diggin up an oldie please help.

have the same probem with the relays clicking like hell and the apexi logo blinking in time with the clicks :S.

checked all fuses, they are good. afm was wired in by dr drift and tuned to 214rwkw so im not sure it would be wired in wrong?

everything is sweet on the stock ecu.

any ideas except fuses and afm???

thanks fellas

  • 8 years later...

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Powder coating wheels

      By MBS206 · Posted

      I'm interested if anyone agrees with what you've said, and can give a good reason. Temperature of powder coating should be below any temperature you'd use to alter the wheel structure.  Powder coat typically 200 to 250. Annealing if that's what people are claiming would be occuring, starts at 300, and depending on the alloy, can need even up at 400+.   That's the only part I can think of that could cause an issue that people are believing it's from the rim losing hardness and becoming too soft.
    • MBS206
      One Headlight isn't working - Driver Side Fuse Keeps blowing

      By MBS206 · Posted

      Negative probe should be on the cars chassis. Positive on the wire.   Start as said above by unplugging everything (unplug the lights, and switches. Now at the switch, there is a wire from the fuse, to the switch, so out your positive on that terminal. It should read open circuit. If it reads something, especially a stupid low value, the short is somewhere between the fuse and the switch. If that's fine, now put the positive probe on the wire that goes to the headlight (at the switch plug). If it reads stupid low, the fault is from the switch, to the headlight.   Another quick test, is take the whole LED light setup from the left, and plug it into the right side, does it still blow the fuse? If you put the right hand side led light setup on the left hand side wiring, does the left hand side wiring now blow?  If the blowing fuse swaps from right to left doing this, your LED lights are the issue.
    • dyl33
      Powder coating wheels

      By dyl33 · Posted

      Anyone know if it's a problem to powder coat forged alloy wheel centers (Rays/Volk GT-C). some say it's bad and can damage the alloy, some say it's not a problem.
    • kevboost7
      One Headlight isn't working - Driver Side Fuse Keeps blowing

      By kevboost7 · Posted

      Hey guys, I'm reviving an old post but I'm finally getting around to working on this now. I removed the battery to get a better look at the wires and i traced the wires from the headlight to the fuse box in the engine bay, but the wiring looks fine? The wiring for the R/H headlight is 3 wires and then is bundled up with the large diameter wire that goes underneath the fuse box. I didn't take it apart yet. I know you said that its a short circuit somewhere between the fuse box and the headlight. But could it be the headlight switch on the dash? Also, i pulled out my multi-meter and set it on the Ohms, but i'm not sure where to put the negative probe and the positive probe.     
    • wrxhoon
      WTB R33 GTST Catch Can 2L or Bigger

      By wrxhoon · Posted

      I have a 2 lt in Sydney. It was fitted on a R33 GTR, not used for several years . If you are interested email me on: [email protected] I'm not on this forum much .
×
×
  • Create New...