Hey,

I have a 1995 EF Falcon Gli, and I enabled my instrument diagnostics modes with the mod found in the EF/EL section of technical documents,
where it shows me my fuel usage, engine revs, speed Km/h, coolant temp, battery voltage, gear position, litres in fuel tank and so on.
and it works ok but every now and then while I am driving, my speedo and tacko, along with the temp and fuel guages all drop dead for a second and then return back normal, and all the lights lights up on my dash, ie, temp, fuel and seat belt warning lights and what not, then after that, the diagnostic mode drops out and returns back to the odometer reading that is usaully there, does any one know whats causing this, and how can I fix it, because I use it alot and it annoys me when it shuts down, how can I fix it?...

Aaron......

I believe thats how its been designed.

Mine does it too.

If you run it on digital speedo, it will hapen.

Dont worry it scared the s**t outta me too when it happened the first time!

Must be an E-series thing .... never had that problem with my AU in diagnostic mode.

If I run the temp display it doesnt do it, jsut te digital speedo/tacho

yeah it only does it on speedo and tacho for some reason

Maybe to keep your attention on the road not the LCD display?