Jump to content
SAU Community

Recommended Posts

Hi guys,

I need help here. So I got my 1994 A31 and it had a RB20DET swapped into it when I bought it. But the Instrument cluster isn`t working. RPM doesnt work at all, Speed is only displayed 20 -50 km/h less then I am actually driving, engine check light doesn``t work etc., you get the idea.

My question would be, which instrument cluster fits the RB20DET?? I read the S14 one will fit?? Any other??

Thanks! :D

Link to comment
https://www.sau.com.au/forums/topic/334832-rb20det-instrument-cluster/
Share on other sites

i thought the s13/14/15 speedo runs a digital sensor( aka no speed cable input)

r32 speedo might work as the speed cable input is the same, but i cant say it will align or wire up the same

Edited by Dan_J
Hi guys,

I need help here. So I got my 1994 A31 and it had a RB20DET swapped into it when I bought it. But the Instrument cluster isn`t working. RPM doesnt work at all, Speed is only displayed 20 -50 km/h less then I am actually driving, engine check light doesn``t work etc., you get the idea.

My question would be, which instrument cluster fits the RB20DET?? I read the S14 one will fit?? Any other??

Thanks! :)

Sounds like a poor wiring job. There is a connector near the ECU that joins the engine loom to the dash loom for things like RPM, engine warning lights etc. If that plug is not wired correctly then you would get these problems.

Speedo is a bit odd, try another cefiro cluster see if that fixes it.

Any cluster other than a cefiro/laurel is going to require rewiring.

If you are going to use a cluster out of an S13/14/15 you will have to install a speed sensor on your gearbox and wire it into the car for the speedometer to work. You will also have problems with the tachometer as it will be designed for a 4cylinder motor as opposed to your 6 cylinder.

Wow guys, thanks for the fast help!

Maybe I also gotta tell you guys that the original engine was an RB24...... Manual Transmission....

So I am going to check the wiring and see if I get the RPM etc. going. If the problem with the speedo persists I will go for an R32 one. Will let you know how it turned out. :D

Cheers! :P

Edited by RedCef

So guys,

We found the problem. The car used to run on an RB24, which uses analog signals to run the instrument cluster. But the engine is swapped to an RB20DET, but with the original RB24 transmission. That`s why the speedo is behaving so strange and also why the RPM isn`t working. Now I wanted to change the transmission to an RB25DET one, but drifting becomes very popular here in China. So a lot of people buy the Silvias and change the transmission to the RB25 ones so that these became really expensive here. Since I want to change to an Exedy sports clutch and these are not made for the RB24 I am going to swap an RB25DET in and get an R33 cluster... Gonna rip a bigger hole in my wallet than originally planned, but f..k it! RB25DET POWER!

Anyway, thanks for all the input! This site is really helpful!!!!

ok , if the rb24 speedo is still running off the rb24 gearbox there shouldn't be an issue , i would be inclined to say your speedo cable is broken (which is quite common if it's the same as rb20) . rb20 cefiro uses a r32 speedo cable , it has a little plastic end glued(?) onto the cable , simple fix is to pull your cluster out and glue the end back into the cable (there is a thread somewhere on sau , but i think it was for r32 which is the same). as for the wiring , i'd advise you speak to an importer to see if they have a half cut you can get the complete under dash loom from :action-smiley-069: (or order a rb25det a31 half cut if your after a rb25 and gearbox)

Yeah, I guess the speedo cable is broken. The tuning shop checked the wiring, but the RPM still isn`t working. But like I said, I am going for an RB25DET and change to a fitting cluster. That should solve the problem. Just out of curiosity, for how much does an used RB25DET goes in Australia??

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

    • Hey. Very valuable information about pitwork, I will pay attention when buying any consumable parts 🙏 As for the carpets - I got a handful of information from nengun, from which it appears that indeed the carpets for the driver's side are OEM. They are not able to show me any pictures due to the long chain of different sales entities but after I place the order, as soon as the goods arrive at the nengun warehouse from which they will send the shipment to me they can send me photos and if my purchase differs from OEM I can immediately return it / cancel the purchase. I think I will give it a try 😉. Of course i'll let you know what's what as soon as i get them P.s. I know the topic is not relevant to the thread, but both nengun and amayama have these SICK 😍 trunk room lamps available. Do you know anyone who ordered them? I need to have one in my car
    • I've managed to find this: Nissan_Stagea_AutechVersion260RS (1).pdf
    • I believe @Duncan has given it a crack at Mt Buller before (in actual race conditions)
    • All my Polish car culture insight comes from watching Nightride. So I half expect this to get 1UZ swapped eventually?! Are you going to drive it in winter? I'm always curious how ATTESA would hold up in the snow. There isn't that much opportunity to try it in Australia.  
    • My steering lock unit on my Infiniti G37 has failed. The car is a local 2012 Infiniti G37 (Q60 ) I need to replace the unit My local mechanic said i need to buy a complete steering wheel assembly. Does anybody no any mechanics in Gold Coast or Brisbane who can fix this issue or where i can buy just the Steering lock control unit. Thanks
×
×
  • Create New...