omegaman wrote on 08. Jan 2007 at 11:32:
TheBoy wrote on 07. Jan 2007 at 21:01:
Don't worry too much about doing paperclip test - its simple and it works.
I am concerned about your erratic speedo - can you measure battery voltage with engine off, and when revving at 2500rpm?
Hi mate......I dont really have much idea about vehicle electrics sadly, so I have no way of doing a voltage test.
I'm just changing my coolant following the helpful guide on the tech page on this site.....this is a great site thanks to all for your help!
ps I've booked my car in with my local Vauxhall garage, they hopefully will be able to sort all the other problems out....at a cost I'm sure!!!!!
The paperclip test is worth doing before you even contemplate using garage or dealer. It really is simple. If you have the time, someone here will guide you through it if you are not quite sure on something

As for the battery voltage, got any mats or work collegues who will have a multimeter?