* Power Steering Fluid: This is the most common and easiest thing to check first. Cold, thick fluid is much harder to pump than warm fluid. If the fluid level is low, it needs topping off (using the correct type of power steering fluid for your car, check your owner's manual). If the fluid is dark, burned, or looks milky (indicating water contamination), it needs to be flushed and replaced.
* Power Steering Pump: The pump itself might be wearing out. Cold temperatures exacerbate the effects of worn seals or internal components that struggle to generate sufficient pressure when the fluid is thick. A failing pump might whine or make other unusual noises when attempting to turn.
* Power Steering Gear Box/Rack and Pinion: (Depending on whether your Riviera has a rack and pinion or a gear box system) This is more involved and less likely to be the sole cause given the cold-related symptom. However, a stiff rack and pinion or gear box, particularly when combined with thick cold fluid, could contribute to the problem. Worn seals or internal components within the gear box can be difficult to diagnose and usually require professional repair.
* Pressure Hose or Lines: While less likely, a hose or line that's cracked or has restricted flow could be more problematic when the fluid is cold and thicker. Inspect the lines visually for damage. These are less likely to cause the issue, but a leak can also cause cold-related issues as the fluid is low, and then thickens when cold
Troubleshooting Steps:
1. Check and Top Off (or Replace) the Power Steering Fluid: This is the absolute first step. If the fluid is low or dirty, address that immediately.
2. Listen for Noises: When attempting to turn right (while cold), listen carefully for whining, groaning, or other unusual noises coming from the power steering pump or steering column area.
3. Feel the Steering Wheel: Is there excessive resistance even before the engine is started? This might indicate a problem with the rack and pinion or gear box independent of the power steering pump.
4. Professional Inspection: If the fluid is fine and you still have the problem, a qualified mechanic should inspect the power steering pump, pressure hoses, and the steering gear itself.
Important Note: Don't attempt major power steering repairs yourself unless you have significant mechanical experience. Power steering systems operate under high pressure, and leaks can be dangerous. A professional diagnosis will save you time, money, and potential injury.
