Jump to content
SAU Community

Inlet Temperature Sensor Not Working?

JimX

By JimX,
in General Maintenance

 Share

Recommended Posts

JimX Grand Master

JimX

Posted
Posted (edited)

Is the inlet temperature sensor part of the AFM? It makes sense that it would be, since it measures the temperature difference in airflow to send the signal to the ECU. On my PowerFC diagnostic screen, it has "---" for the inlet temperature.

Does this mean it's not getting the signal at all? Is there any reason why the AFM would work but not send the temperature, because it otherwise seems to work fine (response, power, etc). If the sensor is attached elsewhere or if there is a common reason why it wouldn't be showing me the inlet temp, can someone please advise? I think this is the main source of my crap fuel economy, if it thinks the engine is always cold it'd be like driving around with the choke constantly on!

Edit: I should note, I have installed a Q45 AFM and re-wired the plug as per instructions I found here awhile back. I did it all over a year ago so don't ask me what I wired up to what :P I spliced it into the loom so that it still has the original plug, but tucked up out of the way and insulated. Is it possible I did something wrong there?

Edited by JimX
Link to comment
https://www.sau.com.au/forums/topic/95993-inlet-temperature-sensor-not-working/
Share on other sites
Bl4cK32 Grand Master

Bl4cK32

Posted
Posted (edited)

do you have an r32 gtst with the AP PFC model, or a gtr with a pfc?

They remap a 32 gtr PFC to use on the 32 gtst, and the r32 gtst doesnt have the inlet sensor (std in a gtr) so it normally shows ---.

You can wire in a sensor though and it will display the inlet temp :P

edit / inlet sensor is located in the inlet maniold near the throttle body

Edited by Bl4cK32
JimX Grand Master

JimX

Posted
  • Author
Posted

Ah right. Does it use the inlet temperature to adjust cold start fueling, or does it use the coolant temp? If the latter then I guess I don't need to install one. Otherwise where can I get one and how do I wire it in? I have an R33 GTS-t sorry (should have said in original post).

JimX Grand Master

JimX

Posted
  • Author
Posted

Ah ok. Thanks for all the info, I guess I'll put a priority on getting a new O2 sensor now. The economy has been steadily getting worse since I got it, and not all due to power mods. Light-footed highway driving should essentially be the same as it always was but it's not.

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

    • bilbo117
      R34 GTR Seats / No longer reclining

      By bilbo117 · Posted

      Hi all, Long time since I've posted here. Looking for some advice on what I can remove to further identify the cause of my issues.  I can move the passenger seat forward and back but the knob used to adjust the seat angle is pretty much free spinning, there's very little resistance.  Removing the side cover I can see that the chain is intact but the shaft for the adjustment spins without the gear attached to it moving.  What's my next step for disassembly here? Is this a common fault? Just being a little cautious as I didn't want to start removing bolts for a spring to fly out or something equally as stupid.  Cheers
    • Dose Pipe Sutututu
      Ethanol Content Sensor - Always at 11%?

      By Dose Pipe Sutututu · Posted

      Those above shitboxes, mediocre and above usually have a turbo strapped to them, hence the slightly higher octane is required.  
    • sinn3r
      R34 Skyline climate control unit transistor

      By sinn3r · Posted

      Hi all,   long time listener, first time caller   i was wondering if anyone can help me identify a transistor on the climate control unit board that decided to fry itself   I've circled it in the attached photo   any help would be appreciated
    • Kinkstaah
      Blue slip

      By Kinkstaah · Posted

      I mean, I got two VASS engineers to refuse to cert my own coilovers stating those very laws. Appendix B makes it pretty clear what it considers 'Variable Suspension' to be. In my lived experience they can't certify something that isn't actually in the list as something that requires certification. In the VASS engineering checklist they have to complete (LS3/NCOP11) and sign on there is nothing there. All the references inside NCOP11 state that if it's variable by the driver that height needs to maintain 100mm while the car is in motion. It states the car is lowered lowering blocks and other types of things are acceptable. Dialling out a shock is about as 'user adjustable' as changing any other suspension component lol. I wanted to have it signed off to dissuade HWP and RWC testers to state the suspension is legal to avoid having this discussion with them. The real problem is that Police and RWC/Pink/Blue slip people will say it needs engineering, and the engineers will state it doesn't need engineering. It is hugely irritating when aforementioned people get all "i know the rules mate feck off" when they don't, and the actual engineers are pleasant as all hell and do know the rules. Cars failing RWC for things that aren't listed in the RWC requirements is another thing here entirely!
    • GTSBoy
      Best place to order Authetic R32 Parts in Japan

      By GTSBoy · Posted

      I don't. I mean, mine's not a GTR, but it is a 32 with a lot of GTR stuff on it. But regardless, I typically buy from local suppliers. Getting stuff from Japan is seldom worth the pain. Buying from RHDJapan usually ends up in the final total of your basket being about double what you thought it would be, after all the bullshit fees and such are added on.
×
×
  • Create New...