Jump to content
SAU Community

Recommended Posts

I have just installed an epson ej1 and nizmo dash with lcd screen, all went well apart from the speedo now says i am doing a little over half the speed im actually doing, i removed my avcr display when i put the dash in which i know was only 2k's out, so i plugged it back in to check the speed and now my avcr is doing the exact same thing.

The only thing i can think that i did wrong was when i wired it up one of the wires, it was not the actual wire off the ecu, there was a wire coming off the ecu wiring going to the avcr so it was easier to just use the avcr wire to tap into, im not even sure if it was actually the speedo wire that i did it with, any idea if this could be the problem, or any other ideas what it could be?

Link to comment
https://www.sau.com.au/forums/topic/238926-problem-with-speedo/
Share on other sites

  • 2 months later...

Still need help with this, i have since moved the wire and have fitted another speed sensor in the gearbox but there is no change, is there anything else that the speed signal pass's through before it gets to the ecu that might need replacing?

This wouldnt cause it to be that far out, and im not sure on the specifics of that dash and the drivline its designed for but ur ratios could be different to wat it was designed for but i dont think this would cause it to be that far out. I know for a fact that the speed sensor goes to the speedo then to the ecu, or they run to the dash and ecu on a seperat system. My speed wire was cut at my ecu so when i got my power fc my speed was always at 0 but my speedo worked fine

i dont supposed thats much help but i thought id just throw it in there. One of the wires that went up to your old dash would be the speed wire yeah? If you could get it on a dyno or even put it on stands or something and put it in gear and let ur foot off the clutch and sorta increase speed a bit and use a multimeter to find the wire with an increasing voltage and use that wire

if using that wire doest work then perhaps theres something wrong with the cluster

have a good christmas and once again i apologise for giving u what may be useless information lol

I have tested the voltage signal at the ecu and i know that is all screwed up, manual said it should go between 1-5votlts i think i was, but it actually goes between 3-12volts.

I assumed that the speedo wire went from the sensor and then was split with one going to the ecu and the other to the cluster, will have to check into the theory that maybe it runs through the cluster then to the ecu, that would explain why the dash (which may have the problem) and then the avcr which is wired after it (assuming it goes through the cluster first) are both reading wrong.

At this point any suggestions are a help.

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

    • I'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
    • The annoying part about neglect, is when you start to replace one thing, and find ten more broken things. Ham fisted monkey repairs you normally only find out about when trying to do something unrelated! Ha ha   Neglect you can kind of anticipate the huge costs to fix it all. Ham fistedness is normally a shock the first time your work on a new old car, as everything "looked" good before.
    • For DBA, check out their guide table here. https://dba.com.au/wp-content/uploads/2023/01/Direct_Replacement-Guide-2021.2.pdf   Additionally they have some other guides and info on how to make sure you choose the right pad.
×
×
  • Create New...