Needle gauges fluctuate???

[Vauxhall-Man-Ash]

As above ladies and gents my oil pressure, and battery voltage gauge fluctuates when ever I start the car and when I rev it they seem to go up more like a rev counter and then just go mad lol I've been told this could be a bad earth but I thought I would post up on here first to see if anyone else has occurred this problem in the passed and what they did to permantly fix this minor issue? :confused:

[craig green]

Voltage shouldnt fluctuate too much, though if everything is operating fine, ignore.
As for oil pressure, this tends to fluctuate when hot, but hold good pressure when cold? (normal)

I found when going from my 1.2 (with SR dials) to a std GSi the gaues all sat lower anyway.

[torquey]

Check the pcb on the clocks. Ive had this issue with mine and the tracks were breaking in places.

[mowgli]

or the alternator is goosed, or there is a duff earth

[paul james]

The oil pressue on mine used to jump around until I put a new sump on it and cleaned up the oil pick up. Now its all clean inside with clean oil the pressue is stable.