Have an interesting intermittent electrical glitch. From time to time (could be every few minutes, could be I drive the car without it happening), the instruments glitch. Speedo, tacho appear to reset themselves (judder to 0, then bounce to ~110mph/6250rpm), fuel and oil temp go to max, and the odomoeter/trip go to all segments lit. Temperature gauge, headlights on warning appear unaffected. After a second or two showing those values, it will go back to behaving normally. Backlights (cluster lighting) don't dim either.

I've had the fuses out and given things a good dose of contact cleaner, so I'm guessing the next likely candidate is an earth - anyone know where they are and whether there's one common earth that would show those symptoms. Or could it be a slightly dodgy 12v feed?

Doesn't seem to be related to bumps in the road or any other common factor I can identify.

Engine runs fine throughout, so I'm treating it as an annoyance, but would be nice to sort it.

thanks,

Jon

Hmmm, guess it's possible. I'll have to pull the thing out

Thanks stan. Hope it's that, but I'm waiting for the rain to stop before I can have a poke!

check your aerial base first mate as if that leaks it'll just wick straight down into the dash! this is one leak I have stopped in my car! tomorrow's job is to silicone the crap out of anything that could be a hole.

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Super high boost Completed, destroyer of gearboxes and 160mph club

Interesting. Could also tie in with the radio reception not being amazing (ie corroded wiring if there's a water leak). Will have a poke later in the hols