You'll need to check your temp sensor. Its in the thermostat housing next to the ECT for the computer. Check for a dirty contact or just replace it (around 10). It has only one pin in it, ground out the connector to the body with a jumper wire while having the key on, the guage should peg out reading full hot. If not, or if it's jumps around while haveing good contact, your guage may be faulty.
The steering problem sounds like internal binding in the steering rack. Tie a string on to a small magnet and set it into the fluid reservoir with the string hanging out, put the lid back on take it for a ride. When you get back pull the magnet out and check for metal sticking to it. If there is you need a steering rack and your system flushed.