The speedometer acting weirdly could be due to a failing vehicle speed sensor. Check the harness connector for proper connection and cleanliness. Contamination's due to presence of water can result in poor connectivity.
For the power steering, check the belt tension. If the fluid had been very dirty prior to replacing, remove the reservoir and check the filter internally for clogging. Clean it up if necessary.
Steering returning with slow response could be due to faults with the steering rack, ball joints or universal joints (which are rare).
Monday, February 27th, 2017 AT 12:15 PM