Jump to content
SAU Community

Tacho Signal Help :/

rb26s13

By rb26s13,
in Engines & Forced Induction

 Share

Recommended Posts

rb26s13 Mentor

rb26s13

Posted
Posted

hey people having a few problems with wiring again (its almost done)

however.. for some reason we cant get any tacho signal wat so ever.. the pin coming out of the computer appears to be dead

computer is a mines remapped r32 gtr factory computer

anyone got any ideas on wat to do? is there another place to get tacho signal from..

neither the factory s13 dash tacho or the autometer monster will pick up any signal wat so ever..

anyone got any ideas??

Link to comment
https://www.sau.com.au/forums/topic/137366-tacho-signal-help/
Share on other sites
RB30-POWER Mentor

RB30-POWER

Posted
Posted (edited)

unsure if the s13 dash has a built in pullup resistor, if it doesn't you will have to add a pullup resistor to the circuit.

the same thing happens when you put the twin cam engines into r31 skylines and vl commodores etc

the pullup resistor needs to be 10k ohm in value and needs to go across the tacho out terminal on the ecu and a +12v wire on the ecu as well.

on the RB26 ecu they are pins 7 (tacho) pin 49 (+12 from efi relay)

once you do this the monster tacho will work, however the 4cylinder tacho in the dash will probably read wrong as its measuring pulses it expects to see for a 4cylinder engine.

hope that helps...

EDIT: ohh yeah the resistor you will pick up from jaycar or dicksmiths for about 10c!

Edited by RB30-POWER

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

    • GTSBoy
      WGNC34 - floor mats

      By GTSBoy · Posted

      I dunno about that as a blanket statement. Pitwork is Nissan's "Nissan genuine" thing, and for stuff like timing belts, I have found them to be excellent. Of course, for things like oil filters, you always use proper trusted brands anyway, not whatever the OEM has taken to using.
    • MBS206
      R34 Skyline climate control unit transistor

      By MBS206 · Posted

      Ahhhh... If you were putting 12V to the led in there, that's likely made it very unhappy. Chances are how you put power, was 12V across an LED that's meant to only have about 20mA through it at peak, and a forward voltage of about 1.8 to 2.4 volts. That circuit is likely only a 3V3 circuit, and will have a resistor in series with the led too. That's my guesstimate on that light, without having touched one.
    • Murray_Calavera
      Tein Circuit Master- rebuild worth it?

      By Murray_Calavera · Posted

      Another vote for installing them and see how you go.  I mean, you already own them, why would you not fit them? 
    • Duncan
      NC MX5

      By Duncan · Posted

      I have had too many of those over the years, my cars have a toolkit or at minimum a cheapy multi tool thing because its too easy to be snookered by some stupid plastic clip that stops you checking the battery terminal isn't loose.
    • Duncan
      WGNC34 - floor mats

      By Duncan · Posted

      Basically, if there is a part# on the nissan catalogue, it is a genuine part. There is a thing called "new old stock" which is stuff made years ago but never sold (or landfilled), but it is super hit and miss what you can buy. Other than some expensive Nismo stuff there is nothing new being made that suits these cars. The only time to be a little careful is (mostly in the US I think, but maybe Japan too), Nissan started rebranding some cheap crap maintenance parts like oil filters as "Pitworks"; stay away from them, if you are buying cheap just buy whatever the local car parts shop carries The three part numbers have an explanation on Amayama: 0V005 is auto, base style 0V015 is manual 0V505 is auto, hectic momo branded ones, maximum F&F points there!
×
×
  • Create New...