Thanks for getting back to me. That seems like a good possibility and is something that I have thought might be a problem. I have often wondered whether the pump or steering rack on this car is adequate enough to cope with moving the 20" wheels but I can't seem to find any other Nitro owners with this problem.
Who will be able to perform a pressure test of my pump? A normal garage or a power steering specialist?
Thanks Pete I will give this a try
I am having trouble getting any local garages who are able to pressure test the system, as most seem to shy away from the car with it being a rare one in the UK. I am going to have to try a Chrysler/Dodge main dealer or find a power steering specialist.