Hi thanks so much for your replys,
So very helpful, I had no idea it was that cheap to buy one of those computer obd things. I feel like it will help me to not get ripped off if I have a bit of knowledge of what the codes actually are and can look them up. My car is around 10 years old (the cute little cherokee with the round lights) and I love it.
Below is the link to an OBD which I thought looked good to try an it is from Australia, not off shore. Will this be suitable for a Jeep Cherokee of that model does anyone know?
http://www.ebay.com.au/itm/HHOBD-ELM...algo=undefined
Then at least I can get an idea of what is going on
I think I must have rung the service departments at a very busy time this morning (around 9.30) I have left messages but not heard anything back so far today :-/
Thanks everybody, I really appreciate it!