Jump to content
SAU Community

R33 Series 1 Motor Running A Series 2 Power Fc. Not Working!

filo_a31

By filo_a31,
in Engines & Forced Induction

 Share

Recommended Posts

filo_a31 Collaborator

filo_a31

Posted
Posted

I bought a power fc which came out of a series 2 r33, plugged it in. But it doesnt power up (hand controller doesnt turn on, fuel pump doesnt prime, no injector pulse etc). Plugged the standard computer back in, and it works fine.

The reason why I bought this power fc is because the majority of people say that series one and two both run the same computers.

Today i got my power fc checked by a profesional to see if it shit itself, but he said it's sweet.

Heeeeeeeeeeeeeeeellllllllllppppppppp meeeeeeeeeeeeeeeeeeeeeeeeee!

filo_a31 Collaborator

filo_a31

Posted
  • Author
Posted

That's the next step i reckon. Don't know if i trust the guy who checked it out, even if he is a "professional".

Got a guy at work that has a series 2 motor in his VL, and a mate with a series 1 r33. So i'll probably just give them a go. I dont reckon my wiring is wrong because the standard computer works fine, so it has to be computer related it would seem

JonnoHR31 Grand Master

JonnoHR31

Posted
Posted

What's your serial number? If it starts with ECR010 then it's series 2, or RB25 for series 1.

There is no s1 or s2 power FC, the one model suits both s1 and s2.

The ECR and RB25 codes simply determine whether it's an older model or newer (still old) model power fc.

Test in another car to make sure it's not stuffed, if it works then have a look at your wiring, check voltage at everything that should have 12v and make sure the earths are good. You could have a dodgy wire somewhere that's supplying enough power/earth for a standard ecu but not enough for the FC, they do draw slightly more power.

femno Grand Master

femno

Posted
Posted

Oh, you may have one of the relays near the ecu missing.

Its strange but the standard ecu doesnt require this particular relay, but the pfc does. From memory I thinks theres supposed to be 2?

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

Its the eccs relay that u guys are talking about.

The ecu requires battery backup power and ignition power to 1 pin. Then the eccs relay is teased via a negative pin which inturn powers the eccs relay powering the next 2 power inputs into the ecu turning it on.

The reason for this is so when the ignition key is turned off the ecu can hold the eccs relay on to keep the ecu powered for 1 second to allow it to save data to NVRAM. This isnt detrimental to the stock ecu however with a power fc it wont store any changes in the tune without this happening.

Op try the ecu on a mates car first. If it doesnt work on that then it may be a faulty ecu.

I have just had this happen to me recently and a warranty claim has been started for the power fc

filo_a31 Collaborator

filo_a31

Posted
  • Author
Posted

***UPDATE****

Power fc works perfectly on my mates VL with rb25det series 2.

I think you guys may be right about that relay. makes perfect sense.

I'll let you's know how i go

  • 1 month later...
filo_a31 Collaborator

filo_a31

Posted
  • Author
Posted

Compare these two diagrams i got from this website. Pin 17 is one of them. Ignore the fact that it says R32. Apparently r32 and r33 series one are the same, And R33 series 2 are the same as R34 series one.

http://wiki.r31skylineclub.com/index.php?title=Pinouts

RB20_ECU_Pinouts.jpg

RB25DET_ECU_Pinouts.jpg

filo_a31 Collaborator

filo_a31

Posted
  • Author
Posted

My auto electrician did it so I'm not exactly sure, but i just checked the diagrams to make sure he wasn't bullshitting me to get some extra cash. Pretty sure he said there were 2 wires that needed swapping around

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

    • Pac
      2020 Nissan Skyline 400R V37/Infiniti Q50 RS insurance in NSW

      By Pac · Posted

      Seems to be the case mate , still an OK price for a grey import.
    • z01db3rg
      R34 GTR parts garage clean out

      By z01db3rg · Posted

      I’m interested in the carbon diffuser fins and Toshiba MFD screen replacement if they’re still available.
    • Kapr
      Question about BoV on RB25DET NEO

      By Kapr · Posted

      @GTSBoy yeah i know it was not the "great" idea but it is and option...but i think i will stay on no BoV rather then trying to make it work with "half" this and that. But that GReddy FV2 is cool...i like that you can make it like stock if you want (and have/make the custom pipes) For other thanks! it was alot of information. But for the sound...a dont rly "like" both of them...specialy if they are loud...but if i "must" choose i would rather have little whooosh rather than sutututu with no BoV....BUT that is what is i gonna get. So for the all info i gather. In my case:  No BoV is not that bad cuz it is stock...and iam used to put N/clutch right after rpms are around 1000 so it should be ok...just need to avoid "big" drops. But i do not have the engine in the car so i do not really know how "bad" or good it is. But as i had that little test drive it looked ok. The atmo BoV should be worse car would dump to much fuel specialy between the shifts...so without proper tune/ECU i dont want that. BUT with that...car should drive ok with no problems right? (i do like there is less piping wih this solution) 🙂 
    • GTSBoy
      R32 GTS (RB20DE) Injectors Replacement

      By GTSBoy · Posted

      Usually an RB20 won't stay in closed loop idle anyway. The O2 sensor gets too cold, stops swinging.
    • joshuaho96
      Upgrade an rb25neo

      By joshuaho96 · Posted

      They aren't, but it depends on what interests you about an R32-R34. If it's the front engine I6 turbo that tunes well with a manual transmission an E92 335i 6MT is so incredibly cheap. You can get a super clean one for 20-25k USD tops. Put an LSD in it, tune it, have fun with it. If it's the general idea of AWD + turbo and a manual transmission the 996 Turbo is absolutely much more expensive, it's less practical but it's also basically a complete track-ready car from the factory. At least the Mezger doesn't have heaps of oil control issues. And in the US the 996 Turbo and R33 GTR are roughly the same price these days. 996 maybe a bit more now that the hype has abated for old Skylines here.
×
×
  • Create New...